WO2018023861A1 - Propeller, power kit and unmanned aerial vehicle - Google Patents

Propeller, power kit and unmanned aerial vehicle Download PDF

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Publication number
WO2018023861A1
WO2018023861A1 PCT/CN2016/099524 CN2016099524W WO2018023861A1 WO 2018023861 A1 WO2018023861 A1 WO 2018023861A1 CN 2016099524 W CN2016099524 W CN 2016099524W WO 2018023861 A1 WO2018023861 A1 WO 2018023861A1
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WIPO (PCT)
Prior art keywords
propeller
blade
center
degrees
distance
Prior art date
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PCT/CN2016/099524
Other languages
French (fr)
Chinese (zh)
Inventor
刘峰
江彬
邓涛
Original Assignee
深圳市大疆创新科技有限公司
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Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Publication of WO2018023861A1 publication Critical patent/WO2018023861A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16—Blades
    • B64C11/18—Aerodynamic features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • B64C27/467—Aerodynamic features

Definitions

  • the present invention relates to a propeller, a power kit having the propeller, and an aircraft having the power kit.
  • the propeller on the unmanned aerial vehicle is a key component of the unmanned aerial vehicle, and the propeller is used to convert the rotation of the motor or the engine intermediate shaft of the UAV into a propulsive force to provide flight power to the unmanned aerial vehicle.
  • the propellers in the prior art have low working efficiency and insufficient maximum pulling force due to the limitation of the contour and structure, and cannot meet the demand of the driving force at work.
  • a propeller comprising a blade, the distance from the center of rotation of the propeller on the blade being 46.875% of the radius of gyration of the propeller, the angle of attack of the blade being 26.14 ⁇ 2.5 degrees;
  • the distance from the center of rotation of the propeller on the blade is 62.50% of the radius of gyration of the propeller, the angle of attack of the blade is 21 ⁇ 2.5 degrees;
  • the pitch of the propeller is from the propeller
  • the distance from the center of revolution is 78.125% of the radius of gyration of the propeller, and the angle of attack of the blade is 17.59 ⁇ 2.5 degrees.
  • the distance from the center of rotation of the propeller on the blade is 31.25% of the radius of gyration of the propeller, and the angle of attack of the blade is 30.70 ⁇ 2.5 degrees;
  • the distance from the center of rotation of the propeller on the blade is 93.75% of the radius of gyration of the propeller, and the angle of attack of the blade is 13.75 ⁇ 2.5 degrees.
  • the rotary diameter of the propeller is 128 mm, and the angle of attack of the blade is 30.70 ⁇ 2.5 degrees at a distance of 20 mm from the center of rotation of the propeller;
  • the angle of attack of the blade is 26.14 ⁇ 2.5 degrees;
  • the blade has an angle of attack of 21 ⁇ 2.5 degrees;
  • the blade has an angle of attack of 17.59 ⁇ 2.5 degrees;
  • the blade has an angle of attack of 13.75 ⁇ 2.5 degrees.
  • the distance from the center of rotation of the propeller on the blade is 46.875% of the radius of gyration of the propeller, and the chord length of the blade is 17.01 ⁇ 5 mm;
  • the distance from the center of rotation of the propeller on the blade is 62.50% of the radius of gyration of the propeller, the chord length of the blade is 15.74 ⁇ 5 mm;
  • the distance from the center of rotation of the propeller on the blade is 78.125% of the radius of gyration of the propeller, and the chord length of the blade is 13.98 ⁇ 5 mm.
  • the distance from the center of rotation of the propeller on the blade is 31.25% of the radius of gyration of the propeller, and the chord length of the blade is 18.09 ⁇ 5 mm;
  • the distance from the center of rotation of the propeller on the blade is 93.75% of the radius of gyration of the propeller, and the chord length of the blade is 12.12 ⁇ 5 mm.
  • the diameter of the rotation of the propeller is 128 ⁇ 15 mm.
  • the paddle includes a leaf surface and a leaf back disposed away from each other, and a first side edge connecting one side of the leaf back and the leaf surface, and another connecting the leaf back and the leaf surface The second side edge of one side.
  • cross-sectional profile of the foliage and the cross-sectional profile of the blade back are both curved.
  • first side edge comprises a curved outwardly convex first arching portion; the second side edge comprises a curved outwardly projecting second arching portion.
  • the propeller is a folding paddle, and the propeller further includes a paddle, the number of the blades is at least three, and each of the blades is rotatably coupled to the paddle.
  • the propeller includes a hub fixedly coupled to the blade, the paddle including a first connecting portion connected to the blade, a second connecting portion located at a center of rotation of the propeller, and connecting the first A transition portion of the connecting portion and the second connecting portion, the transition connecting portion being evenly distributed along a circumferential direction of the hub, and the hub includes three or a plurality of transition connecting portions corresponding to the blade.
  • the propeller has a geometric pitch of 4.8 ⁇ 0.5 inches.
  • a power kit for an unmanned aerial vehicle comprising at least one propeller of any of the above; and at least one drive member that drives rotation of the propeller.
  • the driving member is a motor
  • the propeller is connected to the motor
  • the motor has a KV value of 2400 rpm/(min ⁇ volt).
  • An unmanned aerial vehicle comprising a fuselage, a plurality of arms, and a plurality of power sets as described above, the plurality of arms being coupled to the body, the plurality of power sets being respectively mounted on the plurality of On the arm.
  • the propeller provided by the invention reduces the air resistance, improves the efficiency, and has a relatively large driving force through the design of the angle of attack on different parts of the blade.
  • FIG. 1 is a schematic structural view of a propeller provided by an embodiment of the present invention.
  • Figure 2 is a front elevational view of the propeller of Figure 1.
  • Figure 3 is a side view of the propeller of Figure 1.
  • FIG. 4 is a side elevational view of another perspective view of the propeller of FIG. 1.
  • Figure 5 is a front elevational view of the propeller of Figure 2.
  • Figure 6 is a cross-sectional view of the A-A section of the blade of Figure 5.
  • Figure 7 is a cross-sectional view of the B-B section of the blade of Figure 5.
  • Figure 8 is a cross-sectional view of the C-C section of the paddle of Figure 5.
  • Figure 9 is a cross-sectional view of the D-D section of the blade of Figure 5.
  • Figure 10 is a cross-sectional view of the E-E section of the paddle of Figure 5.
  • a component when referred to as being "fixed” to another component, it can be directly on the other component or the component can be present.
  • a component When a component is considered to "connect” another component, it can be directly connected to another component or possibly a central component.
  • a component When a component is considered to be “set to” another component, it can be placed directly on another component or possibly with a centered component.
  • Embodiments of the present invention provide a propeller that includes a paddle.
  • the distance from the center of rotation of the propeller on the blade is 46.875% of the radius of gyration of the propeller, the angle of attack of the blade is 26.14 ⁇ 2.5 degrees; the propeller is spaced from the propeller
  • the distance of the center of revolution is 62.50% of the radius of gyration of the propeller, the angle of attack of the blade is 21 ⁇ 2.5 degrees; the distance from the center of rotation of the propeller on the blade is the propeller
  • the angle of attack of the blade is 17.59 ⁇ 2.5 degrees.
  • the embodiment of the present invention further provides a power package of an unmanned aerial vehicle, the power package includes a propeller and a motor, the propeller is connected to the motor, and the motor is used to drive the propeller to rotate, the KV of the motor
  • the value is 2400 rpm / (minute volts).
  • the propeller includes a blade on which the distance from the center of rotation of the propeller is 46.875% of the radius of gyration of the propeller, and the angle of attack of the blade is 26.14 ⁇ 2.5 degrees;
  • the distance from the center of rotation of the propeller on the blade is 62.50% of the radius of gyration of the propeller, the angle of attack of the blade is 21 ⁇ 2.5 degrees; the center of rotation of the propeller is on the blade
  • the distance is 78.125% of the radius of gyration of the propeller, and the angle of attack of the blade is 17.59 ⁇ 2.5 degrees.
  • the propeller can provide a large driving force.
  • An embodiment of the present invention further provides an unmanned aerial vehicle including a fuselage, a plurality of arms, and a plurality of power sets, wherein the plurality of arms are connected to the body, and the plurality of power sets are respectively installed in the On multiple arms.
  • the power pack includes a propeller and a motor, the propeller being coupled to the motor, the motor for driving the propeller to rotate, the motor having a KV value of 2400 rpm / (minute volt).
  • the propeller includes a blade on which the distance from the center of rotation of the propeller is 46.875% of the radius of gyration of the propeller, and the angle of attack of the blade is 26.14 ⁇ 2.5 degrees;
  • the distance from the center of rotation of the propeller on the blade is 62.50% of the radius of gyration of the propeller, the angle of attack of the blade is 21 ⁇ 2.5 degrees;
  • the center of rotation of the propeller is on the blade
  • the distance is 78.125% of the radius of gyration of the propeller, the blade
  • the angle of attack is 17.59 ⁇ 2.5 degrees.
  • An unmanned aerial vehicle includes a fuselage, an arm, a propeller, and a driving member for driving the rotation of the propeller, and the arm is coupled to the fuselage.
  • the propeller may be a folding paddle.
  • the number of the propellers may be selected according to actual needs, and may be one, two or more.
  • the driving component is a motor, and the KV value of the motor is 2400 rpm/(minute ⁇ volt); it can be understood that in other embodiments, the KV value of the motor can be selected according to actual flight requirements.
  • the drive member may be in other forms such as an engine or the like.
  • the propeller may be a positive paddle or a reverse paddle.
  • the so-called positive paddle refers to a propeller that rotates counterclockwise to generate lift from the tail of the driving part such as the motor to the direction of the motor head; the so-called reverse paddle refers to the clockwise rotation from the tail of the motor to the direction of the motor head to generate lift.
  • the structure of the positive paddle is mirror symmetrical with the structure of the reverse paddle, so the structure of the propeller is only exemplified by a positive paddle.
  • the plurality of arms are plural, and the propeller and the driving member are all plural, and each driving member drives one of the propellers to rotate to form a power set. At least one set of the power kit is provided on each arm.
  • the power pack may also include a drive member and a plurality of (e.g., two) propellers.
  • FIG. 1 to FIG. 4 shows a schematic structural view of a propeller 100 according to an embodiment of the present invention.
  • the propeller 100 includes a paddle 101 and three blades 200 disposed on the paddle 101.
  • the three blades 200 are disposed symmetrically about a center of the paddle 101. Three of the blades 200 and the paddles 101 rotate to form a paddle. In the present embodiment, the center of the paddle 101 substantially coincides with the center of the paddle.
  • the propeller 100 can be a straight paddle, and the propeller 100 can include a hub and three blades 200 that are fixedly coupled to the hub. It can be understood that in other embodiments, the propeller 100
  • the number of blades 200 included may be two, four or even more, and is not limited to the description of the embodiments of the present invention.
  • the paddle 101 includes a first connecting portion 1011 connected to the blade 200, a second connecting portion 1013 at a center of rotation of the propeller 100, and a transition connecting portion 1015 connecting the first connecting portion 1011 and the second connecting portion 1013. .
  • the transition joints 1015 are evenly distributed along the circumferential direction of the hub 101.
  • the number of the transition connecting portions 1015 is three, and a transition connecting portion 1015 is disposed between each of the first connecting portions 1011 connecting the blade 200 and the second connecting portion 1013.
  • the transition joints 1015 can also be other numbers, such as varying according to the number of blades 200, or can be fixed to three.
  • the transition connecting portion 1015 is a rib structure for connecting the inner and outer portions of the paddle 101, and the weight of the paddle 101 can be appropriately reduced.
  • the propeller 100 is a stationary propeller, and three of the blades 200 are fixedly coupled to the paddle 101. It can be understood that in other embodiments, the propeller 100 can be a foldable paddle, and the paddle 200 is rotatably coupled to the paddle 101. Alternatively, in some embodiments, the paddle 200 is integrally formed with the paddle 101, or, in some embodiments, the paddle 200 is removably mounted to the paddle by a connector. 101 is not limited to the description in the embodiment of the present invention.
  • the number of blades 200 in each of the propellers 100 may be other numbers, such as two, four, etc., depending on actual needs.
  • the number of the blades 200 is two, and the two blades 200 are evenly spaced in the circumferential direction with respect to the center of the paddle.
  • the paddle has a diameter of 128 ⁇ 15 mm.
  • the diameter of the paddle may be 113 mm, 123 mm, 128 mm, 133 mm, 143 mm, or the diameter of the paddle may be any value within a range of values defined by any two of the above values.
  • the paddle has a diameter of 128 mm.
  • the "center of the paddle” and the “paddle center” mentioned above and below should be understood as “ “Slewing center of the propeller”, similarly, “diameter of the paddle” and “paddle disk diameter” mentioned above and below should be understood as “the diameter of the propeller", “radius of the paddle” and “paddle plate” The radius “should be understood as “the radius of gyration of the propeller”.
  • the paddle 101 can be used to connect with a rotating shaft of a driving member of the UAV so that The drive member is capable of driving the propeller 100 to rotate.
  • a reinforcing sheet may be embedded in the paddle 101, and the reinforcing sheet may be made of a lightweight high-strength material such as aluminum alloy to increase the strength of the propeller 100.
  • the paddle 101 is substantially cylindrical. Three of the blades 200 are evenly spaced along the circumference of the paddle 101, and each of the blades 200 is threadedly coupled to the paddle 101.
  • the geometric pitch of the propeller 100 is 4.8 ⁇ 0.5 inches, and the geometric pitch is the distance that the blade advances one revolution when the blade angle of attack is zero.
  • the geometric pitch of the propeller 100 may be 4.3 mm, 4.4 inches, 4.5 inches, 4.6 inches, 4.7 inches, 4.8 inches, 4.9 inches, 5.0 inches, 5.1 inches, 5.2 inches, 5.3 inches, or the geometry
  • the pitch can be any value within the range of values defined by any two of the above values.
  • the geometric pitch is 4.8 inches.
  • the blade 200 includes a blade face 10 and a blade back 20 disposed away from each other, and a first side edge 30 connecting the blade back 20 and a side of the blade face 10, connecting the blade back 20 and the The second side edge 40 of the other side of the foliage 10.
  • the cross-sectional profile of the foliage 10 and the cross-sectional profile of the blade back 20 are both curved (see Figures 6-10).
  • the leaf surface 10 faces the drive member, that is, the leaf surface 10 is disposed downward; and the blade back 20 faces away from the The drive member, that is, the leaf back 20 is disposed upward.
  • the leaf surface 10 and the leaf back 20 are curved surfaces.
  • the first side edge 30 includes a curved, outwardly projecting first arched portion 31.
  • the first arching portion 31 is smoothly transitionally connected to other portions of the first side edge 30.
  • the first arching portion 31 is disposed adjacent to the paddle 101.
  • the second side edge 40 includes a curved, outwardly projecting second bulge 41 that is smoothly transitionally connected to other portions of the second side edge 40.
  • the second arching portion 41 is disposed adjacent to the paddle 101.
  • the blade 200 has no sharp torsion, the stress is small, the structural strength is high, the fracture is not easy, and the reliability is high.
  • One end of the blade 200 away from the paddle 101 is the thinnest portion of the paddle 200, which is advantageous for reducing air resistance. That is, the thickness of one end of the blade 200 away from the center of the paddle is less than the thickness of other portions of the paddle 200.
  • the length of the blade 200 is 64 ⁇ 10 mm.
  • the length of the blade 200 can be any value between 54 mm and 74 mm, such as 54 mm, 60 mm, 64 mm, 70 mm, 74 mm, or the length of the blade 200 may be any value within the range of values defined by any two of the above values.
  • the blade 200 has a length of 64 mm.
  • the angle of attack referred to herein refers to the angle between the chord of the blade 200 and the velocity of the incoming flow.
  • the distance from the center O of the paddle on the paddle 200 is 31.25% of the paddle radius, and the angle of attack ⁇ 1 of the paddle 200 is 30.70 ⁇ 2.5. degree.
  • the angle of attack ⁇ 1 of the blade 200 herein may be 28.20 degrees, 28.70 degrees, 29.20 degrees, 29.70 degrees, 30.20 degrees, 30.70 degrees, 33.20 degrees, or the angle of attack ⁇ 1 of the blade 200 herein. Any value within the numerical range defined by any two of the above numerical values may be used. In the present embodiment, the angle of attack ⁇ 1 is 30.70 degrees.
  • chord length L1 of the paddle 200 is 18.09 ⁇ 5 mm.
  • the chord length L1 of the blade 200 herein may be 13.09 mm, 15.09 mm, 17.09 mm, 18.09 mm, 20.09 mm, 22.09 mm, 23.09 mm, or the chord length L1 of the blade 200 herein.
  • the numerical value within the range of values defined by any two of the above numerical values may be, in the present embodiment, the chord length L1 is 18.09 mm.
  • the distance from the center O of the paddle on the paddle 200 is 46.875% of the paddle radius, and the angle of attack ⁇ 2 of the paddle 200 is 26.14 ⁇ 2.5. degree.
  • the angle of attack ⁇ 2 of the blade 200 herein may be 23.64 degrees, 24.64 degrees, 25.14 degrees, 26.14 degrees, 26.64 degrees, 27.64 degrees, 28.64 degrees, or the angle of attack ⁇ 2 of the blade 200 herein. Any value within the numerical range defined by any two of the above numerical values may be used. In the present embodiment, the angle of attack ⁇ 2 is 26.64 degrees.
  • chord length L2 of the paddle 200 is 17.01 ⁇ 5 mm.
  • the chord length L2 of the blade 200 herein may be 12.01 mm, 13.01 mm, 15.01 mm, 17.01 mm, 19.01 mm, 21.01 mm, 22.01 mm, or, specifically, the paddle 200 herein.
  • the chord length L2 may be any value within a range of values defined by any two of the above numerical values. In the present embodiment, the chord length L2 is 17.01 mm.
  • the distance from the center O of the paddle on the blade 200 is 62.50% of the paddle radius, and the angle of attack ⁇ 3 of the blade 200 is 21 ⁇ 2.5. degree.
  • the angle of attack ⁇ 3 of the blade 200 herein may be 18.5 degrees, 19.5 degrees, 20 degrees, 20.5 degrees, 21.5 degrees, 22.5 degrees, 23.5 degrees, or the angle of attack ⁇ 3 of the blade 200 herein. Any value within a range of values defined by any two of the above numerical values.
  • the angle of attack ⁇ 3 is 21 degrees.
  • the distance from the center O of the paddle on the paddle 200 is 62.50% of the paddle radius, and the chord length L3 of the paddle 200 is 15.74 ⁇ 5 mm.
  • chord length L3 of the blade 200 herein may be 10.74 mm, 12.74 mm, 14.74 mm 15.74 mm, 17.74 mm, 19.74 mm, 20.74 mm, or the chord length L3 of the blade 200 herein may be Any value within the numerical range defined by any two of the above numerical values, in the present embodiment, the chord length L3 is 15.74 mm.
  • the distance from the center O of the paddle on the paddle 200 is 78.125% of the paddle radius, and the angle of attack ⁇ 4 of the paddle 200 is 17.59 ⁇ 2.5. degree.
  • the angle of attack ⁇ 4 of the blade 200 herein may be 15.09 degrees, 15.59 degrees, 16.59 degrees, 17.59 degrees, 18.59 degrees, 19.09 degrees, 20.09 degrees, or, here, the angle of attack ⁇ 4 of the blade 200. Any value within the numerical range defined by any two of the above numerical values may be used. In the present embodiment, the angle of attack ⁇ 4 is 17.59 degrees.
  • the distance from the center O of the paddle on the paddle 200 is 78.125% of the paddle radius, and the chord length L4 of the paddle 200 is 13.98 ⁇ 5 mm.
  • chord length L4 of the blade 200 herein may be 8.98 mm, 9.98 mm, 11.98 mm, 13.98 mm, 15.98 mm, 17.98 mm, 18.98 mm, or the chord length L4 of the blade 200 herein. Any value within the numerical range defined by any two of the above numerical values may be used. In the present embodiment, the chord length L4 is 13.98 mm.
  • the distance from the center O of the paddle on the paddle 200 is 93.75% of the paddle radius, and the angle of attack ⁇ 5 of the paddle 200 is 13.75 ⁇ 2.5. degree.
  • the angle of attack ⁇ 5 of the blade 200 herein may be 11.5 degrees, 12.5 degrees, 12.75 degrees, 13.75 degrees, 14.75 degrees, 15.25 degrees, 16.25 degrees, or the angle of attack ⁇ 5 of the blade 200 herein. Any value within the numerical range defined by any two of the above numerical values may be used.
  • the angle of attack ⁇ 5 is 13.75 degrees.
  • the distance from the center O of the paddle on the paddle 200 is 93.75% of the paddle radius, and the chord length L5 of the paddle 200 is 12.12 ⁇ 5 mm.
  • chord length L5 of the blade 200 herein may be 7.12 mm, 8.12 mm, 10.12 mm, 12.12 mm, 14.12 mm, 16.12 mm, 17.12 mm, or the chord length L5 of the blade 200 herein. Any value within the range of values defined by any two of the above values may be used. In the present embodiment, the chord length L5 is 12.12 mm.
  • the paddle has a diameter of 128 mm.
  • An angle of attack ⁇ 1 of the blade 200 at 20 mm from the center of the paddle on the blade 200 At 30.70 degrees, the chord length L1 of the blade 200 is 18.09 mm; at an angle of 30 mm from the center of the paddle, the angle of attack ⁇ 2 of the blade 200 is 26.14 degrees, the chord length of the blade 200 L2 is 17.01 mm; at an angle of 40 mm from the center of the paddle, the angle of attack ⁇ 3 of the blade 200 is 21 degrees, and the chord length L3 of the blade 200 is 15.74 mm; at a distance from the paddle At a center of 50 mm, the angle of attack ⁇ 4 of the blade 200 is 17.59 degrees, the chord length L4 of the blade 200 is 13.98 mm, and the blade 200 is attacked 60 mm from the center of the paddle.
  • the angle ⁇ 5 is 13.75 degrees, and the chord length L5 of the blade 200 is 12.12 mm.
  • Table 1 shows the driving force values of the propellers provided by the present embodiment at different rotational speeds.
  • the propeller provided by the present embodiment can provide a large pulling force while saving power consumption, increasing the cruising distance and the maximum forward flying speed of the UAV.
  • the propeller provided by the invention reduces the air resistance, improves the pulling force and the efficiency, increases the cruising distance of the aircraft and improves the flight performance of the aircraft by designing the angle of attack of different parts of the front flying blade.

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Abstract

Provided in the present invention is a propeller (100), comprising blades (200). At a position on the blades (200), 46.875% from the center of gyration of the propeller (100), along the radius of gyration of the propeller (100), the angle of attack of the blades (200) is 26.14 ± 2.5 degrees; at another position on the blades (200), 62.50% from the center of gyration of the propeller (100), along the radius of gyration of the propeller (100), the angle of attack of the blades (200) is 21 ± 2.5 degrees; and at another position on the blades (200), 78.125% from the center of gyration of the propeller (100), along the radius of gyration of the propeller (100), the angle of attack of the blades (200) is 17.59 ± 2.5 degrees. Further provided in the present invention are a power kit and an unmanned aerial vehicle using the described propeller (100).

Description

螺旋桨、动力套装及无人飞行器Propeller, power pack and unmanned aerial vehicle 技术领域Technical field
本发明涉及一种螺旋桨、具有所述螺旋桨的动力套装及具有所述动力套装的飞行器。The present invention relates to a propeller, a power kit having the propeller, and an aircraft having the power kit.
背景技术Background technique
无人飞行器上的螺旋桨为无人飞行器的关键元件，所述螺旋桨用于将所述无人飞行器的电机或者发动机中转轴的转动转化为推动力，从而为所述无人飞行器提供飞行的动力。现有技术中的螺旋桨由于外形轮廓和结构的限制，其工作效率较低，最大拉力不足，在工作时无法满足预期的推动力的需求。The propeller on the unmanned aerial vehicle is a key component of the unmanned aerial vehicle, and the propeller is used to convert the rotation of the motor or the engine intermediate shaft of the UAV into a propulsive force to provide flight power to the unmanned aerial vehicle. The propellers in the prior art have low working efficiency and insufficient maximum pulling force due to the limitation of the contour and structure, and cannot meet the demand of the driving force at work.
发明内容Summary of the invention
有鉴于此，有必要提供一种具有较高效率且较大拉力的螺旋桨，还有必要提供一种采用所述螺旋桨的动力套装和无人飞行器。In view of the above, it is necessary to provide a propeller having a higher efficiency and a larger pulling force, and it is also necessary to provide a power kit and an unmanned aerial vehicle using the propeller.
一种螺旋桨，其包括桨叶，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的46.875％处，所述桨叶的攻角为26.14±2.5度；在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的62.50％处，所述桨叶的攻角为21±2.5度；在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的78.125％处，所述桨叶的攻角为17.59±2.5度。a propeller comprising a blade, the distance from the center of rotation of the propeller on the blade being 46.875% of the radius of gyration of the propeller, the angle of attack of the blade being 26.14 ± 2.5 degrees; The distance from the center of rotation of the propeller on the blade is 62.50% of the radius of gyration of the propeller, the angle of attack of the blade is 21 ± 2.5 degrees; the pitch of the propeller is from the propeller The distance from the center of revolution is 78.125% of the radius of gyration of the propeller, and the angle of attack of the blade is 17.59 ± 2.5 degrees.
进一步地，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的31.25％处，所述桨叶的攻角为30.70±2.5度；Further, the distance from the center of rotation of the propeller on the blade is 31.25% of the radius of gyration of the propeller, and the angle of attack of the blade is 30.70±2.5 degrees;
或/及，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的93.75％处，所述桨叶的攻角为13.75±2.5度。Or/and, the distance from the center of rotation of the propeller on the blade is 93.75% of the radius of gyration of the propeller, and the angle of attack of the blade is 13.75 ± 2.5 degrees.
进一步地，所述螺旋桨的回转直径128毫米，在距离所述螺旋桨的回转中心20毫米处，所述桨叶的攻角为30.70±2.5度；Further, the rotary diameter of the propeller is 128 mm, and the angle of attack of the blade is 30.70±2.5 degrees at a distance of 20 mm from the center of rotation of the propeller;
或/及，在距离所述螺旋桨的回转中心30毫米处，所述桨叶的攻角为26.14±2.5度； Or / and, at a distance of 30 mm from the center of rotation of the propeller, the angle of attack of the blade is 26.14 ± 2.5 degrees;
或/及，在距离所述螺旋桨的回转中心40毫米处，所述桨叶的攻角为21±2.5度；Or / and, at a distance of 40 mm from the center of rotation of the propeller, the blade has an angle of attack of 21 ± 2.5 degrees;
或/及，在距离所述螺旋桨的回转中心50毫米处，所述桨叶的攻角为17.59±2.5度；Or / and, at a distance of 50 mm from the center of rotation of the propeller, the blade has an angle of attack of 17.59 ± 2.5 degrees;
或/及，在距离所述螺旋桨的回转中心60毫米处，所述桨叶的攻角为13.75±2.5度。Or/and, at an angle of 60 mm from the center of rotation of the propeller, the blade has an angle of attack of 13.75 ± 2.5 degrees.
进一步地，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的46.875％处，所述桨叶的弦长为17.01±5毫米；Further, the distance from the center of rotation of the propeller on the blade is 46.875% of the radius of gyration of the propeller, and the chord length of the blade is 17.01±5 mm;
或/及，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的62.50％处，所述桨叶的弦长为15.74±5毫米；Or / and, the distance from the center of rotation of the propeller on the blade is 62.50% of the radius of gyration of the propeller, the chord length of the blade is 15.74 ± 5 mm;
或/及，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的78.125％处，所述桨叶的弦长为13.98±5毫米。Or/and, the distance from the center of rotation of the propeller on the blade is 78.125% of the radius of gyration of the propeller, and the chord length of the blade is 13.98 ± 5 mm.
进一步地，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的31.25％处，所述桨叶的弦长为18.09±5毫米；Further, the distance from the center of rotation of the propeller on the blade is 31.25% of the radius of gyration of the propeller, and the chord length of the blade is 18.09±5 mm;
或/及，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的93.75％处，所述桨叶的弦长为12.12±5毫米。Or/and, the distance from the center of rotation of the propeller on the blade is 93.75% of the radius of gyration of the propeller, and the chord length of the blade is 12.12 ± 5 mm.
进一步地，所述螺旋桨的回转的直径为128±15毫米。Further, the diameter of the rotation of the propeller is 128 ± 15 mm.
进一步地，所述桨叶包括相互背离设置的叶面及叶背，以及连接所述叶背及所述叶面的一侧的第一侧缘、连接所述叶背及所述叶面的另一侧的第二侧缘。Further, the paddle includes a leaf surface and a leaf back disposed away from each other, and a first side edge connecting one side of the leaf back and the leaf surface, and another connecting the leaf back and the leaf surface The second side edge of one side.
进一步地，所述叶面的横截面轮廓及所述叶背的横截面轮廓均弯曲。Further, the cross-sectional profile of the foliage and the cross-sectional profile of the blade back are both curved.
进一步地，所述第一侧缘包括曲面状的向外凸出的第一拱起部；所述第二侧缘包括曲面状的向外凸出的第二拱起部。Further, the first side edge comprises a curved outwardly convex first arching portion; the second side edge comprises a curved outwardly projecting second arching portion.
进一步地，所述螺旋桨为折叠桨，所述螺旋桨还包括桨座，所述桨叶的数量为至少三个，每个所述桨叶能够转动地连接于所述桨座上。Further, the propeller is a folding paddle, and the propeller further includes a paddle, the number of the blades is at least three, and each of the blades is rotatably coupled to the paddle.
进一步地，所述螺旋桨包括与所述桨叶固定连接的桨毂，所述桨榖包括与所述桨叶连接的第一连接部、位于螺旋桨的旋转中心的第二连接部以及连接所述第一连接部和第二连接部的过渡连接部，所述过渡连接部沿所述轮毂的周向均匀分布，且所述轮毂包括三个或与桨叶对应数目个过渡连接部。Further, the propeller includes a hub fixedly coupled to the blade, the paddle including a first connecting portion connected to the blade, a second connecting portion located at a center of rotation of the propeller, and connecting the first A transition portion of the connecting portion and the second connecting portion, the transition connecting portion being evenly distributed along a circumferential direction of the hub, and the hub includes three or a plurality of transition connecting portions corresponding to the blade.
进一步地，所述螺旋桨的几何螺距为4.8±0.5英寸。 Further, the propeller has a geometric pitch of 4.8 ± 0.5 inches.
一种无人飞行器的动力套装，所述动力套装包括上述任一项所述的至少一个螺旋桨；以及驱动所述螺旋桨转动的至少一个驱动件。A power kit for an unmanned aerial vehicle, the power kit comprising at least one propeller of any of the above; and at least one drive member that drives rotation of the propeller.
进一步地，所述驱动件为电机，所述螺旋桨连接于所述电机上，所述电机的KV值为2400转/(分钟·伏特)。Further, the driving member is a motor, and the propeller is connected to the motor, and the motor has a KV value of 2400 rpm/(min·volt).
一种无人飞行器，其包括机身、多个机臂及如上所述的多个动力套装，所述多个机臂与所述机身连接，所述多个动力套装分别安装在所述多个机臂上。An unmanned aerial vehicle comprising a fuselage, a plurality of arms, and a plurality of power sets as described above, the plurality of arms being coupled to the body, the plurality of power sets being respectively mounted on the plurality of On the arm.
本发明提供的螺旋桨通过对桨叶的不同部位的攻角的设计，减少了空气阻力，提高了效率，且推动力相对较大。The propeller provided by the invention reduces the air resistance, improves the efficiency, and has a relatively large driving force through the design of the angle of attack on different parts of the blade.
附图说明DRAWINGS
图1是本发明实施方式提供的螺旋桨的结构示意图。1 is a schematic structural view of a propeller provided by an embodiment of the present invention.
图2是图1中的螺旋桨的主视图。Figure 2 is a front elevational view of the propeller of Figure 1.
图3是图1中的螺旋桨的侧视图。Figure 3 is a side view of the propeller of Figure 1.
图4是图1中的螺旋桨的另一视角的侧视图。4 is a side elevational view of another perspective view of the propeller of FIG. 1.
图5是图2中的螺旋桨的正面示意图。Figure 5 is a front elevational view of the propeller of Figure 2.
图6是图5中的桨叶的A-A剖面的剖视图。Figure 6 is a cross-sectional view of the A-A section of the blade of Figure 5.
图7是图5中的桨叶的B-B剖面的剖视图。Figure 7 is a cross-sectional view of the B-B section of the blade of Figure 5.
图8是图5中的桨叶的C-C剖面的剖视图。Figure 8 is a cross-sectional view of the C-C section of the paddle of Figure 5.
图9是图5中的桨叶的D-D剖面的剖视图。Figure 9 is a cross-sectional view of the D-D section of the blade of Figure 5.
图10是图5中的桨叶的E-E剖面的剖视图。Figure 10 is a cross-sectional view of the E-E section of the paddle of Figure 5.
主要元件符号说明Main component symbol description
螺旋桨                        100Propeller 100
桨榖                          101Paddle 榖 101
第一连接部                    1011First connecting portion 1011
第二连接部                    1013 Second connecting portion 1013
过渡连接部                    1015 Transition connection 1015
桨叶                          200Blade 200
叶面                          10 Foliage 10
叶背                          20Leaf back 20
第一侧缘                      30 First side edge 30
第一拱起部                    31First arched portion 31
第二侧缘                      40 Second side edge 40
第二拱起部                    41 Second arch 41
如下具体实施方式将结合上述附图进一步说明本发明。The invention will be further illustrated by the following detailed description in conjunction with the accompanying drawings.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
需要说明的是，当组件被称为“固定于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“连接”另一个组件，它可以是直接连接到另一个组件或者可能同时存在居中组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or the component can be present. When a component is considered to "connect" another component, it can be directly connected to another component or possibly a central component. When a component is considered to be "set to" another component, it can be placed directly on another component or possibly with a centered component.
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.
在实现本发明的过程中，发明人发现了如下问题： In the process of implementing the present invention, the inventors have found the following problems:
(1)螺旋桨的效率与螺旋桨的攻角和弦长有关，为此，发明人在螺旋桨的形状及结构方面做出了重点改进。(1) The efficiency of the propeller is related to the angle of attack and the chord length of the propeller. For this reason, the inventors made major improvements in the shape and structure of the propeller.
(2)特别地，螺旋桨的效率受到螺旋桨中部(40％～80％区域)的攻角以及弦长影响，为此，发明人在螺旋桨的中部重点做出改进。(2) In particular, the efficiency of the propeller is affected by the angle of attack and the chord length in the middle of the propeller (40% to 80% of the area). For this reason, the inventor focused on the improvement of the center of the propeller.
(3)螺旋桨的形状及结构直接影响到其在旋转时产生的推动力方向以及推动力大小，为此，发明人在此方面做出了一些改进。(3) The shape and structure of the propeller directly affect the direction of the driving force and the driving force generated when it is rotated. For this reason, the inventors have made some improvements in this respect.
本发明实施例提供一种螺旋桨，其包括桨叶。在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的46.875％处，所述桨叶的攻角为26.14±2.5度；在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的62.50％处，所述桨叶的攻角为21±2.5度；在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的78.125％处，所述桨叶的攻角为17.59±2.5度。Embodiments of the present invention provide a propeller that includes a paddle. The distance from the center of rotation of the propeller on the blade is 46.875% of the radius of gyration of the propeller, the angle of attack of the blade is 26.14 ± 2.5 degrees; the propeller is spaced from the propeller The distance of the center of revolution is 62.50% of the radius of gyration of the propeller, the angle of attack of the blade is 21 ± 2.5 degrees; the distance from the center of rotation of the propeller on the blade is the propeller At 78.125% of the radius of gyration, the angle of attack of the blade is 17.59 ± 2.5 degrees.
本发明实施例还提供一种无人飞行器的动力套装，所述动力套装包括螺旋桨以及电机，所述螺旋桨连接于所述电机上，所述电机用于驱动所述螺旋桨转动，所述电机的KV值为2400转/(分钟·伏特)。所述螺旋桨包括桨叶，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的46.875％处，所述桨叶的攻角为26.14±2.5度；在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的62.50％处，所述桨叶的攻角为21±2.5度；在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的78.125％处，所述桨叶的攻角为17.59±2.5度。所述螺旋桨可提供较大的推动力。The embodiment of the present invention further provides a power package of an unmanned aerial vehicle, the power package includes a propeller and a motor, the propeller is connected to the motor, and the motor is used to drive the propeller to rotate, the KV of the motor The value is 2400 rpm / (minute volts). The propeller includes a blade on which the distance from the center of rotation of the propeller is 46.875% of the radius of gyration of the propeller, and the angle of attack of the blade is 26.14 ± 2.5 degrees; The distance from the center of rotation of the propeller on the blade is 62.50% of the radius of gyration of the propeller, the angle of attack of the blade is 21 ± 2.5 degrees; the center of rotation of the propeller is on the blade The distance is 78.125% of the radius of gyration of the propeller, and the angle of attack of the blade is 17.59 ± 2.5 degrees. The propeller can provide a large driving force.
本发明实施例还提供一种无人飞行器，其包括机身、多个机臂以及多个动力套装，所述多个机臂与所述机身连接，所述多个动力套装分别安装在所述多个机臂上。所述动力套装包括螺旋桨以及电机，所述螺旋桨连接于所述电机上，所述电机用于驱动所述螺旋桨转动，所述电机的KV值为2400转/(分钟·伏特)。所述螺旋桨包括桨叶，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的46.875％处，所述桨叶的攻角为26.14±2.5度；在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的62.50％处，所述桨叶的攻角为21±2.5度；在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的78.125％处，所述桨叶 的攻角为17.59±2.5度。An embodiment of the present invention further provides an unmanned aerial vehicle including a fuselage, a plurality of arms, and a plurality of power sets, wherein the plurality of arms are connected to the body, and the plurality of power sets are respectively installed in the On multiple arms. The power pack includes a propeller and a motor, the propeller being coupled to the motor, the motor for driving the propeller to rotate, the motor having a KV value of 2400 rpm / (minute volt). The propeller includes a blade on which the distance from the center of rotation of the propeller is 46.875% of the radius of gyration of the propeller, and the angle of attack of the blade is 26.14 ± 2.5 degrees; The distance from the center of rotation of the propeller on the blade is 62.50% of the radius of gyration of the propeller, the angle of attack of the blade is 21 ± 2.5 degrees; the center of rotation of the propeller is on the blade The distance is 78.125% of the radius of gyration of the propeller, the blade The angle of attack is 17.59 ± 2.5 degrees.
下面结合附图，对本发明的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The features of the embodiments and examples described below can be combined with each other without conflict.
本发明一实施方式提供的无人飞行器，其包括机身、机臂、螺旋桨及用于驱动所述螺旋桨转动的驱动件，所述机臂与所述机身相连接。可以理解，在一些实施方式中，所述螺旋桨可以为折叠桨。所述螺旋桨的数量可以根据实际需要选择，可以为一个、两个或者多个。本实施方式中，所述驱动件为电机，所述电机的KV值为2400转/(分钟·伏特)；可以理解，在其他实施方式中，所述电机的KV值可以根据实际的飞行需要选取；所述驱动件可以为其他形式，如发动机等。An unmanned aerial vehicle according to an embodiment of the present invention includes a fuselage, an arm, a propeller, and a driving member for driving the rotation of the propeller, and the arm is coupled to the fuselage. It will be appreciated that in some embodiments, the propeller may be a folding paddle. The number of the propellers may be selected according to actual needs, and may be one, two or more. In this embodiment, the driving component is a motor, and the KV value of the motor is 2400 rpm/(minute·volt); it can be understood that in other embodiments, the KV value of the motor can be selected according to actual flight requirements. The drive member may be in other forms such as an engine or the like.
所述螺旋桨可以是正桨或者反桨。所谓正桨，指从驱动件如电机的尾部向电机头部方向看，逆时针旋转以产生升力的螺旋桨；所谓反桨，指从电机尾部向电机头部方向看，顺时针旋转以产生升力的螺旋桨。所述正桨的结构与所述反桨的结构之间镜像对称，故下文仅以正桨为例阐述所述螺旋桨的结构。The propeller may be a positive paddle or a reverse paddle. The so-called positive paddle refers to a propeller that rotates counterclockwise to generate lift from the tail of the driving part such as the motor to the direction of the motor head; the so-called reverse paddle refers to the clockwise rotation from the tail of the motor to the direction of the motor head to generate lift. propeller. The structure of the positive paddle is mirror symmetrical with the structure of the reverse paddle, so the structure of the propeller is only exemplified by a positive paddle.
具体在本实施方式中，所述机臂为多个，所述螺旋桨及所述驱动件均为多个，并且每一个驱动件驱动一个所述螺旋桨转动，构成一套动力套装。每个机臂上设有至少一套所述动力套装。Specifically, in the embodiment, the plurality of arms are plural, and the propeller and the driving member are all plural, and each driving member drives one of the propellers to rotate to form a power set. At least one set of the power kit is provided on each arm.
可以理解，所述动力套装也可包括一个驱动件和多个(如两个)螺旋桨。It will be appreciated that the power pack may also include a drive member and a plurality of (e.g., two) propellers.
另外，本发明实施方式的描述中出现的上、下等方位用语是以所述螺旋桨安装于所述飞行器以后所述螺旋桨以及所述飞行器的常规运行姿态为参考，而不应所述认为具有限制性。In addition, the terms of the upper and lower orientations appearing in the description of the embodiments of the present invention are based on the conventional operating posture of the propeller and the aircraft after the propeller is mounted on the aircraft, and should not be considered as having limitations. Sex.
请同时参阅图1至图4，图中示出了本发明实施方式提供的螺旋桨100的结构示意图。所述螺旋桨100包括桨榖101及设置于所述桨榖101上的三个桨叶200，三个所述桨叶200关于所述桨榖101的中心呈中心对称设置。三个所述桨叶200及所述桨榖101旋转起来形成一桨盘。在本实施方式中，所述桨榖101的中心与所述桨盘的中心基本重合。当然，在其他实施方式中，所述螺旋桨100可以为直桨，所述螺旋桨100可以包括桨毂及与所述桨毂固定连接的三个桨叶200。可以理解，在其他的实施方式中，所述螺旋桨100 包含的桨叶200的数量可以为两个、四个甚至更多，并不局限于本发明实施例所描述。Please refer to FIG. 1 to FIG. 4 simultaneously, which shows a schematic structural view of a propeller 100 according to an embodiment of the present invention. The propeller 100 includes a paddle 101 and three blades 200 disposed on the paddle 101. The three blades 200 are disposed symmetrically about a center of the paddle 101. Three of the blades 200 and the paddles 101 rotate to form a paddle. In the present embodiment, the center of the paddle 101 substantially coincides with the center of the paddle. Of course, in other embodiments, the propeller 100 can be a straight paddle, and the propeller 100 can include a hub and three blades 200 that are fixedly coupled to the hub. It can be understood that in other embodiments, the propeller 100 The number of blades 200 included may be two, four or even more, and is not limited to the description of the embodiments of the present invention.
所述桨榖101包括与桨叶200连接的第一连接部1011、位于螺旋桨100的旋转中心的第二连接部1013以及连接所述第一连接部1011和第二连接部1013的过渡连接部1015。所述过渡连接部1015沿所述轮毂101的周向均匀分布。本实施例中，所述过渡连接部1015的数目为三个，在所述第一连接部1011每个连接桨叶200的部位和第二连接部1013之间均设置一个过渡连接部1015。可以理解，所述过渡连接部1015也可为其他数目，如根据桨叶200的数目变动而变动，或可固定为三个。本实施例中，所述过渡连接部1015为筋条结构，用于连接桨榖101的内外两部分，且可适当减小桨榖101的重量。The paddle 101 includes a first connecting portion 1011 connected to the blade 200, a second connecting portion 1013 at a center of rotation of the propeller 100, and a transition connecting portion 1015 connecting the first connecting portion 1011 and the second connecting portion 1013. . The transition joints 1015 are evenly distributed along the circumferential direction of the hub 101. In this embodiment, the number of the transition connecting portions 1015 is three, and a transition connecting portion 1015 is disposed between each of the first connecting portions 1011 connecting the blade 200 and the second connecting portion 1013. It can be understood that the transition joints 1015 can also be other numbers, such as varying according to the number of blades 200, or can be fixed to three. In this embodiment, the transition connecting portion 1015 is a rib structure for connecting the inner and outer portions of the paddle 101, and the weight of the paddle 101 can be appropriately reduced.
在本实施方式中，所述螺旋桨100为固定式螺旋桨，三个所述桨叶200均固定地连接于所述桨榖101上。可以理解，在其他的实施方式中，所述螺旋桨100可以为可折叠桨，所述桨叶200可转动地连接于所述桨榖101上。或者，在一些实施方式中，所述桨叶200与所述桨榖101为一体成型结构，或者，在一些实施方式中，所述桨叶200通过连接件可拆卸地装设于所述桨榖101上，并不局限于本发明实施例中所描述。In the present embodiment, the propeller 100 is a stationary propeller, and three of the blades 200 are fixedly coupled to the paddle 101. It can be understood that in other embodiments, the propeller 100 can be a foldable paddle, and the paddle 200 is rotatably coupled to the paddle 101. Alternatively, in some embodiments, the paddle 200 is integrally formed with the paddle 101, or, in some embodiments, the paddle 200 is removably mounted to the paddle by a connector. 101 is not limited to the description in the embodiment of the present invention.
同样可以理解的是，根据实际需要，每个所述螺旋桨100中所述桨叶200的数量可以为其他数量，如两个、四个等等。具体地如，在另一个实施方式中，所述桨叶200的数量为两个，两个所述桨叶200相对所述桨座的中心在圆周方向上间隔均匀分布。It will also be appreciated that the number of blades 200 in each of the propellers 100 may be other numbers, such as two, four, etc., depending on actual needs. Specifically, as in another embodiment, the number of the blades 200 is two, and the two blades 200 are evenly spaced in the circumferential direction with respect to the center of the paddle.
在本实施方式中，所述桨盘的直径为128±15毫米。具体地，所述桨盘的直径可以为113毫米、123毫米、128毫米、133毫米、143毫米，或者，所述桨盘的直径可以为上述任意两个数值所界定的数值范围内的任意值。优选地，所述桨盘的直径为128毫米。由于所述桨盘是由所述桨叶200及所述桨榖101旋转而形成的效果，上文以及下文中所提到的“桨盘的中心”和“桨盘中心”，应当理解为“螺旋桨的回转中心”，类似地，上文以及下文中所提到的“桨盘的直径”和“桨盘直径”应当理解为“螺旋桨的回转直径”，“桨盘的半径”和“桨盘半径”应当理解为“螺旋桨的回转半径”。In the present embodiment, the paddle has a diameter of 128 ± 15 mm. Specifically, the diameter of the paddle may be 113 mm, 123 mm, 128 mm, 133 mm, 143 mm, or the diameter of the paddle may be any value within a range of values defined by any two of the above values. . Preferably, the paddle has a diameter of 128 mm. Since the paddle is formed by the rotation of the paddle 200 and the paddle 101, the "center of the paddle" and the "paddle center" mentioned above and below, should be understood as " "Slewing center of the propeller", similarly, "diameter of the paddle" and "paddle disk diameter" mentioned above and below should be understood as "the diameter of the propeller", "radius of the paddle" and "paddle plate" The radius "should be understood as "the radius of gyration of the propeller".
所述桨榖101可以用于与所述无人飞行器的驱动件的转轴相连接，以使 所述驱动件能够驱动所述螺旋桨100转动。所述桨榖101内可以嵌设有加强片，所述加强片可以采用铝合金等轻质高强度材料制成，以提高所述螺旋桨100的强度。The paddle 101 can be used to connect with a rotating shaft of a driving member of the UAV so that The drive member is capable of driving the propeller 100 to rotate. A reinforcing sheet may be embedded in the paddle 101, and the reinforcing sheet may be made of a lightweight high-strength material such as aluminum alloy to increase the strength of the propeller 100.
在本实施方式中，所述桨榖101大致呈圆柱状。三个所述桨叶200沿所述桨榖101的周向均匀间隔设置，且每个所述桨叶200与所述桨榖101通过螺纹连接。在本实施方式中，所述螺旋桨100的几何螺距为4.8±0.5英寸，所述几何螺距为桨叶剖面迎角为零时，桨叶旋转一周所前进的距离。具体地，所述螺旋桨100的几何螺距可以为4.3毫米、4.4英寸、4.5英寸、4.6英寸、4.7英寸、4.8英寸、4.9英寸、5.0英寸、5.1英寸、5.2英寸、5.3英寸，或者，所述几何螺距可以为上述任意两个数值所界定的数值范围内的任意值。优选地，所述几何螺距为4.8英寸。In the present embodiment, the paddle 101 is substantially cylindrical. Three of the blades 200 are evenly spaced along the circumference of the paddle 101, and each of the blades 200 is threadedly coupled to the paddle 101. In the present embodiment, the geometric pitch of the propeller 100 is 4.8 ± 0.5 inches, and the geometric pitch is the distance that the blade advances one revolution when the blade angle of attack is zero. Specifically, the geometric pitch of the propeller 100 may be 4.3 mm, 4.4 inches, 4.5 inches, 4.6 inches, 4.7 inches, 4.8 inches, 4.9 inches, 5.0 inches, 5.1 inches, 5.2 inches, 5.3 inches, or the geometry The pitch can be any value within the range of values defined by any two of the above values. Preferably, the geometric pitch is 4.8 inches.
所述桨叶200包括相互背离设置的叶面10和叶背20，以及连接所述叶背20及所述叶面10的一侧的第一侧缘30、连接所述叶背20及所述叶面10的另一侧的第二侧缘40。所述叶面10的横截面轮廓及所述叶背20的横截面轮廓均弯曲(请参阅图6至图10)。当所述螺旋桨100装设在所述无人机的驱动件上时，所述叶面10朝向所述驱动件，也即，所述叶面10朝下设置；且所述叶背20背离所述驱动件，也即，所述叶背20朝上设置。在本实施方式中，所述叶面10及所述叶背20均为曲面。所述第一侧缘30包括曲面状的向外凸出的第一拱起部31。所述第一拱起部31与所述第一侧缘30的其他部分平滑过渡连接。在本实施方式中，所述第一拱起部31邻近所述桨榖101设置。所述第二侧缘40包括曲面状的向外凸出的第二拱起部41，所述第二拱起部41与所述第二侧缘40的其他部分平滑过渡连接。在本实施方式中，所述第二拱起部41邻近所述桨榖101设置。The blade 200 includes a blade face 10 and a blade back 20 disposed away from each other, and a first side edge 30 connecting the blade back 20 and a side of the blade face 10, connecting the blade back 20 and the The second side edge 40 of the other side of the foliage 10. The cross-sectional profile of the foliage 10 and the cross-sectional profile of the blade back 20 are both curved (see Figures 6-10). When the propeller 100 is mounted on the drive member of the drone, the leaf surface 10 faces the drive member, that is, the leaf surface 10 is disposed downward; and the blade back 20 faces away from the The drive member, that is, the leaf back 20 is disposed upward. In the present embodiment, the leaf surface 10 and the leaf back 20 are curved surfaces. The first side edge 30 includes a curved, outwardly projecting first arched portion 31. The first arching portion 31 is smoothly transitionally connected to other portions of the first side edge 30. In the present embodiment, the first arching portion 31 is disposed adjacent to the paddle 101. The second side edge 40 includes a curved, outwardly projecting second bulge 41 that is smoothly transitionally connected to other portions of the second side edge 40. In the present embodiment, the second arching portion 41 is disposed adjacent to the paddle 101.
在本发明实施方式所提供的螺旋桨100中，所述桨叶200上无急剧扭转之处，应力较小，结构强度较高，不易折断，可靠性高。所述桨叶200远离所述桨榖101的一端为所述桨叶200最薄的部分，有利于减小空气阻力。即，所述桨叶200远离所述桨盘的中心的一端的厚度小于所述桨叶200其他部分的厚度。In the propeller 100 provided by the embodiment of the present invention, the blade 200 has no sharp torsion, the stress is small, the structural strength is high, the fracture is not easy, and the reliability is high. One end of the blade 200 away from the paddle 101 is the thinnest portion of the paddle 200, which is advantageous for reducing air resistance. That is, the thickness of one end of the blade 200 away from the center of the paddle is less than the thickness of other portions of the paddle 200.
本实施方式中，所述桨叶200的长度为64±10毫米。所述桨叶200的长度可以为54毫米至74毫米之间的任意值，例如54毫米、60毫米、64毫米、 70毫米、74毫米，或者，所述桨叶200的长度可以为上述任意两个数值所界定的数值范围内的任意值。优选地，所述桨叶200的长度为64毫米。In the present embodiment, the length of the blade 200 is 64 ± 10 mm. The length of the blade 200 can be any value between 54 mm and 74 mm, such as 54 mm, 60 mm, 64 mm, 70 mm, 74 mm, or the length of the blade 200 may be any value within the range of values defined by any two of the above values. Preferably, the blade 200 has a length of 64 mm.
本文中所指的攻角，是指所述桨叶200的翼弦与来流速度之间的夹角。The angle of attack referred to herein refers to the angle between the chord of the blade 200 and the velocity of the incoming flow.
请同时参阅图5及图6，在所述桨叶200上距所述桨盘的中心O的距离为所述桨盘半径的31.25％处，所述桨叶200的攻角α1为30.70±2.5度。具体地，此处所述桨叶200的攻角α1可以为28.20度、28.70度、29.20度、29.70度、30.20度、30.70度、33.20度，或者，此处所述桨叶200的攻角α1可以为上述任意两个数值所界定的数值范围内的任意值，在本实施方式中，所述攻角α1为30.70度。在所述桨叶200上距所述桨盘的中心O的距离为所述桨盘半径的31.25％处，所述桨叶200的弦长L1为18.09±5毫米。具体地，此处所述桨叶200的弦长L1可以为13.09毫米、15.09毫米、17.09毫米、18.09毫米、20.09毫米、22.09毫米、23.09毫米，或者，此处所述桨叶200的弦长L1可以为上述任意两个数值所界定的数值范围内的数值，在本实施方式中，所述弦长L1为18.09毫米。Referring to FIG. 5 and FIG. 6 simultaneously, the distance from the center O of the paddle on the paddle 200 is 31.25% of the paddle radius, and the angle of attack α1 of the paddle 200 is 30.70±2.5. degree. Specifically, the angle of attack α1 of the blade 200 herein may be 28.20 degrees, 28.70 degrees, 29.20 degrees, 29.70 degrees, 30.20 degrees, 30.70 degrees, 33.20 degrees, or the angle of attack α1 of the blade 200 herein. Any value within the numerical range defined by any two of the above numerical values may be used. In the present embodiment, the angle of attack α1 is 30.70 degrees. The distance from the center O of the paddle on the paddle 200 is 31.25% of the paddle radius, and the chord length L1 of the paddle 200 is 18.09 ± 5 mm. Specifically, the chord length L1 of the blade 200 herein may be 13.09 mm, 15.09 mm, 17.09 mm, 18.09 mm, 20.09 mm, 22.09 mm, 23.09 mm, or the chord length L1 of the blade 200 herein. The numerical value within the range of values defined by any two of the above numerical values may be, in the present embodiment, the chord length L1 is 18.09 mm.
请同时参阅图5及图7，在所述桨叶200上距所述桨盘的中心O的距离为所述桨盘半径的46.875％处，所述桨叶200的攻角α2为26.14±2.5度。具体地，此处所述桨叶200的攻角α2可以为23.64度、24.64度、25.14度、26.14度、26.64度、27.64度、28.64度，或者，此处所述桨叶200的攻角α2可以为上述任意两个数值所界定的数值范围内的任意值，在本实施方式中，所述攻角α2为26.64度。在所述桨叶200上距所述桨盘的中心O的距离为所述桨盘半径的46.875％处，所述桨叶200的弦长L2为17.01±5毫米。具体地，此处所述桨叶200的弦长L2可以为12.01毫米、13.01毫米、15.01毫米、17.01毫米、19.01毫米、21.01毫米、22.01毫米，或者，具体地，此处所述桨叶200的弦长L2可以为上述任意两个数值所界定的数值范围内的任意值，在本实施方式中，所述弦长L2为17.01毫米。Referring to FIG. 5 and FIG. 7 simultaneously, the distance from the center O of the paddle on the paddle 200 is 46.875% of the paddle radius, and the angle of attack α2 of the paddle 200 is 26.14±2.5. degree. Specifically, the angle of attack α2 of the blade 200 herein may be 23.64 degrees, 24.64 degrees, 25.14 degrees, 26.14 degrees, 26.64 degrees, 27.64 degrees, 28.64 degrees, or the angle of attack α2 of the blade 200 herein. Any value within the numerical range defined by any two of the above numerical values may be used. In the present embodiment, the angle of attack α2 is 26.64 degrees. The distance from the center O of the paddle on the paddle 200 is 46.875% of the paddle radius, and the chord length L2 of the paddle 200 is 17.01 ± 5 mm. Specifically, the chord length L2 of the blade 200 herein may be 12.01 mm, 13.01 mm, 15.01 mm, 17.01 mm, 19.01 mm, 21.01 mm, 22.01 mm, or, specifically, the paddle 200 herein. The chord length L2 may be any value within a range of values defined by any two of the above numerical values. In the present embodiment, the chord length L2 is 17.01 mm.
请同时参阅图5及图8，在所述桨叶200上距所述桨盘的中心O的距离为所述桨盘半径的62.50％处，所述桨叶200的攻角α3为21±2.5度。具体地，此处所述桨叶200的攻角α3可以为18.5度、19.5度、20度、20.5度、21.5度、22.5度、23.5度，或者，此处所述桨叶200的攻角α3可以为上述任意两个数值所界定的数值范围内的任意值，在本实施方式中，所述攻角α3为 21度。在所述桨叶200上距所述桨盘的中心O的距离为所述桨盘半径的62.50％处，所述桨叶200的弦长L3为15.74±5毫米。具体地，此处所述桨叶200的弦长L3可以为10.74毫米、12.74毫米、14.74毫米15.74毫米、17.74毫米、19.74毫米、20.74毫米，或者，此处所述桨叶200的弦长L3可以为上述任意两个数值所界定的数值范围内的任意值，在本实施方式中，所述弦长L3为15.74毫米。Referring to FIG. 5 and FIG. 8 simultaneously, the distance from the center O of the paddle on the blade 200 is 62.50% of the paddle radius, and the angle of attack α3 of the blade 200 is 21±2.5. degree. Specifically, the angle of attack α3 of the blade 200 herein may be 18.5 degrees, 19.5 degrees, 20 degrees, 20.5 degrees, 21.5 degrees, 22.5 degrees, 23.5 degrees, or the angle of attack α3 of the blade 200 herein. Any value within a range of values defined by any two of the above numerical values. In the present embodiment, the angle of attack α3 is 21 degrees. The distance from the center O of the paddle on the paddle 200 is 62.50% of the paddle radius, and the chord length L3 of the paddle 200 is 15.74 ± 5 mm. Specifically, the chord length L3 of the blade 200 herein may be 10.74 mm, 12.74 mm, 14.74 mm 15.74 mm, 17.74 mm, 19.74 mm, 20.74 mm, or the chord length L3 of the blade 200 herein may be Any value within the numerical range defined by any two of the above numerical values, in the present embodiment, the chord length L3 is 15.74 mm.
请同时参阅图5及图9，在所述桨叶200上距所述桨盘的中心O的距离为所述桨盘半径的78.125％处，所述桨叶200的攻角α4为17.59±2.5度。具体地，此处所述桨叶200的攻角α4可以为15.09度、15.59度、16.59度、17.59度、18.59度、19.09度、20.09度，或者，此处所述桨叶200的攻角α4可以为上述任意两个数值所界定的数值范围内的任意值，在本实施方式中，所述攻角α4为17.59度。在所述桨叶200上距所述桨盘的中心O的距离为所述桨盘半径的78.125％处，所述桨叶200的弦长L4为13.98±5毫米。具体地，此处所述桨叶200的弦长L4可以为8.98毫米、9.98毫米、11.98毫米、13.98毫米、15.98毫米、17.98毫米、18.98毫米，或者，此处所述桨叶200的弦长L4可以为上述任意两个数值所界定的数值范围内的任意值，在本实施方式中，所述弦长L4为13.98毫米。5 and FIG. 9, the distance from the center O of the paddle on the paddle 200 is 78.125% of the paddle radius, and the angle of attack α4 of the paddle 200 is 17.59±2.5. degree. Specifically, the angle of attack α4 of the blade 200 herein may be 15.09 degrees, 15.59 degrees, 16.59 degrees, 17.59 degrees, 18.59 degrees, 19.09 degrees, 20.09 degrees, or, here, the angle of attack α4 of the blade 200. Any value within the numerical range defined by any two of the above numerical values may be used. In the present embodiment, the angle of attack α4 is 17.59 degrees. The distance from the center O of the paddle on the paddle 200 is 78.125% of the paddle radius, and the chord length L4 of the paddle 200 is 13.98 ± 5 mm. Specifically, the chord length L4 of the blade 200 herein may be 8.98 mm, 9.98 mm, 11.98 mm, 13.98 mm, 15.98 mm, 17.98 mm, 18.98 mm, or the chord length L4 of the blade 200 herein. Any value within the numerical range defined by any two of the above numerical values may be used. In the present embodiment, the chord length L4 is 13.98 mm.
请同时参阅图5及图10，在所述桨叶200上距所述桨盘的中心O的距离为所述桨盘半径的93.75％处，所述桨叶200的攻角α5为13.75±2.5度。具体地，此处所述桨叶200的攻角α5可以为11.5度、12.5度、12.75度、13.75度、14.75度、15.25度、16.25度，或者，此处所述桨叶200的攻角α5可以为上述任意两个数值所界定的数值范围内的任意值，在本实施方式中，所述攻角α5为13.75度。在所述桨叶200上距所述桨盘的中心O的距离为所述桨盘半径的93.75％处，所述桨叶200的弦长L5为12.12±5毫米。具体地，此处所述桨叶200的弦长L5可以为7.12毫米、8.12毫米、10.12毫米、12.12毫米、14.12毫米、16.12毫米、17.12毫米，或者，此处所述桨叶200的弦长L5可以为上述任意两个数值所界定的数值范围内的任意值，在本实施方式中，所述弦长L5为12.12毫米。5 and FIG. 10, the distance from the center O of the paddle on the paddle 200 is 93.75% of the paddle radius, and the angle of attack α5 of the paddle 200 is 13.75±2.5. degree. Specifically, the angle of attack α5 of the blade 200 herein may be 11.5 degrees, 12.5 degrees, 12.75 degrees, 13.75 degrees, 14.75 degrees, 15.25 degrees, 16.25 degrees, or the angle of attack α5 of the blade 200 herein. Any value within the numerical range defined by any two of the above numerical values may be used. In the present embodiment, the angle of attack α5 is 13.75 degrees. The distance from the center O of the paddle on the paddle 200 is 93.75% of the paddle radius, and the chord length L5 of the paddle 200 is 12.12 ± 5 mm. Specifically, the chord length L5 of the blade 200 herein may be 7.12 mm, 8.12 mm, 10.12 mm, 12.12 mm, 14.12 mm, 16.12 mm, 17.12 mm, or the chord length L5 of the blade 200 herein. Any value within the range of values defined by any two of the above values may be used. In the present embodiment, the chord length L5 is 12.12 mm.
请再次参阅图5至图10，在本实施方式中，所述桨盘的直径为128毫米。在所述桨叶200上距离所述桨盘的中心20毫米处，所述桨叶200的攻角α1 为30.70度，所述桨叶200的弦长L1为18.09毫米；在距离所述桨盘的中心30毫米处，所述桨叶200的攻角α2为26.14度，所述桨叶200的弦长L2为17.01毫米；在距离所述桨盘的中心40毫米处，所述桨叶200的攻角α3为21度，所述桨叶200的弦长L3为15.74毫米；在距离所述桨盘的中心50毫米处，所述桨叶200的攻角α4为17.59度，所述桨叶200的弦长L4为13.98毫米；在距离所述桨盘的中心60毫米处，所述桨叶200的攻角α5为13.75度，所述桨叶200的弦长L5为12.12毫米。Referring again to FIGS. 5-10, in the present embodiment, the paddle has a diameter of 128 mm. An angle of attack α1 of the blade 200 at 20 mm from the center of the paddle on the blade 200 At 30.70 degrees, the chord length L1 of the blade 200 is 18.09 mm; at an angle of 30 mm from the center of the paddle, the angle of attack α2 of the blade 200 is 26.14 degrees, the chord length of the blade 200 L2 is 17.01 mm; at an angle of 40 mm from the center of the paddle, the angle of attack α3 of the blade 200 is 21 degrees, and the chord length L3 of the blade 200 is 15.74 mm; at a distance from the paddle At a center of 50 mm, the angle of attack α4 of the blade 200 is 17.59 degrees, the chord length L4 of the blade 200 is 13.98 mm, and the blade 200 is attacked 60 mm from the center of the paddle. The angle α5 is 13.75 degrees, and the chord length L5 of the blade 200 is 12.12 mm.
请参阅表1，表1所示为本实施方式提供的螺旋桨在不同的转速下的推动力值。Please refer to Table 1. Table 1 shows the driving force values of the propellers provided by the present embodiment at different rotational speeds.
表1螺旋桨转速-推动力值Table 1 propeller speed - driving force value
Figure PCTCN2016099524-appb-000001
Figure PCTCN2016099524-appb-000001
由表中可以看出，本实施方式提供的螺旋桨能够提供较大的拉力，同时节省电量消耗，增加了无人飞行器的续航距离和最大前飞速度。As can be seen from the table, the propeller provided by the present embodiment can provide a large pulling force while saving power consumption, increasing the cruising distance and the maximum forward flying speed of the UAV.
本发明提供的螺旋桨通过对前飞时桨叶的不同部位的攻角的设计，减少了空气阻力，提高了拉力和效率，增加了飞行器的续航距离并提高了飞行器的飞行性能。The propeller provided by the invention reduces the air resistance, improves the pulling force and the efficiency, increases the cruising distance of the aircraft and improves the flight performance of the aircraft by designing the angle of attack of different parts of the front flying blade.
另外，本技术领域的普通技术人员应当认识到，以上的实施方式仅是用来说明本发明，而并非用作为对本发明的限定，只要在本发明的实质精神范围之内，对以上实施例所作的适当改变和变化都落在本发明要求保护的范围之内。 In addition, those skilled in the art should understand that the above embodiments are only used to illustrate the invention, and are not intended to limit the invention, as long as the scope of the invention is Appropriate changes and variations are intended to fall within the scope of the invention.

Claims (15)

  1. 一种螺旋桨，其包括桨叶，其特征在于：在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的46.875％处，所述桨叶的攻角为26.14±2.5度；在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的62.50％处，所述桨叶的攻角为21±2.5度；在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的78.125％处，所述桨叶的攻角为17.59±2.5度。A propeller comprising a blade, wherein a distance from a center of rotation of the propeller on the blade is 46.875% of a radius of gyration of the propeller, and an angle of attack of the blade is 26.14± 2.5 degrees; the distance from the center of rotation of the propeller on the blade is 62.50% of the radius of gyration of the propeller, the angle of attack of the blade is 21 ± 2.5 degrees; the distance on the blade The distance of the center of rotation of the propeller is 78.125% of the radius of gyration of the propeller, and the angle of attack of the blade is 17.59 ± 2.5 degrees.
  2. 如权利要求1所述的螺旋桨，其特征在于：在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的31.25％处，所述桨叶的攻角为30.70±2.5度；A propeller according to claim 1, wherein a distance from said center of revolution of said propeller on said blade is 31.25% of a radius of gyration of said propeller, and an angle of attack of said blade is 30.70 ± 2.5 degrees;
    或/及，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的93.75％处，所述桨叶的攻角为13.75±2.5度。Or/and, the distance from the center of rotation of the propeller on the blade is 93.75% of the radius of gyration of the propeller, and the angle of attack of the blade is 13.75 ± 2.5 degrees.
  3. 如权利要求1所述的螺旋桨，其特征在于：所述螺旋桨的回转直径为128毫米，在距离所述螺旋桨的回转中心20毫米处，所述桨叶的攻角为30.70±2.5度；The propeller according to claim 1, wherein said propeller has a turning diameter of 128 mm, and said blade has an angle of attack of 30.70 ± 2.5 degrees at a distance of 20 mm from a center of rotation of said propeller;
    或/及，在距离所述螺旋桨的回转中心30毫米处，所述桨叶的攻角为26.14±2.5度；Or / and, at a distance of 30 mm from the center of rotation of the propeller, the angle of attack of the blade is 26.14 ± 2.5 degrees;
    或/及，在距离所述螺旋桨的回转中心40毫米处，所述桨叶的攻角为21±2.5度；Or / and, at a distance of 40 mm from the center of rotation of the propeller, the blade has an angle of attack of 21 ± 2.5 degrees;
    或/及，在距离所述螺旋桨的回转中心50毫米处，所述桨叶的攻角为17.59±2.5度；Or / and, at a distance of 50 mm from the center of rotation of the propeller, the blade has an angle of attack of 17.59 ± 2.5 degrees;
    或/及，在距离所述螺旋桨的回转中心60毫米处，所述桨叶的攻角为13.75±2.5度。Or/and, at an angle of 60 mm from the center of rotation of the propeller, the blade has an angle of attack of 13.75 ± 2.5 degrees.
  4. 如权利要求1所述的螺旋桨，其特征在于：在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的46.875％处，所述桨叶的弦长为17.01±5毫米；A propeller according to claim 1, wherein a distance from said center of revolution of said propeller on said blade is 46.875% of a radius of gyration of said propeller, and a chord length of said blade is 17.01 ± 5 mm;
    或/及，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的62.50％处，所述桨叶的弦长为15.74±5毫米；Or / and, the distance from the center of rotation of the propeller on the blade is 62.50% of the radius of gyration of the propeller, the chord length of the blade is 15.74 ± 5 mm;
    或/及，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回 转半径的78.125％处，所述桨叶的弦长为13.98±513.98±5毫米。Or/and the distance from the center of rotation of the propeller on the blade is the back of the propeller At 78.125% of the radius of rotation, the chord length of the blade is 13.98 ± 513.98 ± 5 mm.
  5. 如权利要求4所述的螺旋桨，其特征在于：在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的31.25％处，所述桨叶的弦长为18.09±5毫米；A propeller according to claim 4, wherein a distance from said center of rotation of said propeller on said blade is 31.25% of a radius of gyration of said propeller, and a chord length of said blade is 18.09 ± 5 mm;
    或/及，在所述桨叶上距所述螺旋桨的回转中心的距离为所述螺旋桨的回转半径的93.75％处，所述桨叶的弦长为12.12±5毫米。Or/and, the distance from the center of rotation of the propeller on the blade is 93.75% of the radius of gyration of the propeller, and the chord length of the blade is 12.12 ± 5 mm.
  6. 如权利要求1所述的螺旋桨，其特征在于：所述螺旋桨的回转的直径为128±15毫米。A propeller according to claim 1, wherein said propeller has a diameter of 128 ± 15 mm.
  7. 如权利要求1所述的螺旋桨，其特征在于：所述桨叶包括相互背离设置的叶面及叶背，以及连接所述叶背及所述叶面的一侧的第一侧缘、连接所述叶背及所述叶面的另一侧的第二侧缘。A propeller according to claim 1, wherein said blade includes a leaf surface and a leaf back disposed away from each other, and a first side edge connecting the side of said leaf back and said leaf surface, a joint The leaf back and the second side edge of the other side of the leaf surface.
  8. 如权利要求7所述的螺旋桨，其特征在于：所述叶面的横截面轮廓及所述叶背的横截面轮廓均弯曲。The propeller of claim 7 wherein the cross-sectional profile of the foliate and the cross-sectional profile of the blade back are both curved.
  9. 如权利要求7所述的螺旋桨，其特征在于：所述第一侧缘包括曲面状的向外凸出的第一拱起部；所述第二侧缘包括曲面状的向外凸出的第二拱起部。A propeller according to claim 7, wherein said first side edge comprises a curved outwardly projecting first arching portion; said second side edge comprising a curved outwardly projecting portion Two arches.
  10. 如权利要求1所述的螺旋桨，其特征在于：所述螺旋桨为折叠桨，所述螺旋桨还包括桨座，所述桨叶的数量为至少三个，每个所述桨叶能够转动地连接于所述桨座上。A propeller according to claim 1, wherein said propeller is a folding paddle, said propeller further comprising a paddle, said number of blades being at least three, each of said blades being rotatably coupled to On the paddle.
  11. 如权利要求10所述的螺旋桨，其特征在于：所述螺旋桨包括与所述桨叶固定连接的桨毂，所述桨榖包括与所述桨叶连接的第一连接部、位于螺旋桨的旋转中心的第二连接部以及连接所述第一连接部和第二连接部的过渡连接部，所述过渡连接部沿所述轮毂的周向均匀分布，且所述轮毂包括三个或与桨叶对应数目个过渡连接部。A propeller according to claim 10, wherein said propeller includes a hub fixedly coupled to said blade, said paddle including a first connection to said blade, at a center of rotation of said propeller a second connecting portion and a transition connecting portion connecting the first connecting portion and the second connecting portion, the transition connecting portion is evenly distributed along a circumferential direction of the hub, and the hub includes three or corresponding to a blade A number of transition connections.
  12. 如权利要求1所述的螺旋桨，其特征在于：所述螺旋桨的几何螺距为4.8±0.5英寸。The propeller of claim 1 wherein said propeller has a geometric pitch of 4.8 ± 0.5 inches.
  13. 一种无人飞行器的动力套装，其特征在于：所述动力套装包括权利要求1-12中任一项所述的至少一个螺旋桨及驱动所述螺旋桨转动的驱动件。A power kit for an unmanned aerial vehicle, characterized in that the power kit comprises at least one propeller according to any one of claims 1 to 12 and a driving member for driving the propeller to rotate.
  14. 如权利要求13所述的动力套装，其特征在于：所述驱动件为电机，所述螺旋桨连接于所述电机上，所述电机的KV值为2400转/(分钟·伏特)。 A power kit according to claim 13, wherein said driving member is a motor, and said propeller is coupled to said motor, said motor having a KV value of 2400 rpm / (minute volt).
  15. 一种无人飞行器，其包括机身、多个机臂及权利要求13或14所述的多个动力套装，所述多个机臂与所述机身连接，所述多个动力套装分别安装在所述多个机臂上。 An unmanned aerial vehicle comprising a fuselage, a plurality of arms, and a plurality of power sets according to claim 13 or 14, wherein the plurality of arms are connected to the body, and the plurality of power sets are separately installed On the plurality of arms.
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CN205366054U (en) * 2016-01-28 2016-07-06 深圳市大疆创新科技有限公司 Screw, power component and aircraft
CN205418072U (en) * 2016-02-26 2016-08-03 深圳市大疆创新科技有限公司 Screw, power component and aircraft
CN205396538U (en) * 2016-03-02 2016-07-27 深圳市道通智能航空技术有限公司 Screw and aircraft

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CN112623212A (en) * 2020-12-29 2021-04-09 中国航天空气动力技术研究院 Unmanned aerial vehicle screw displacement device

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