CN208530838U - A kind of helicopter reaction torque balance system and helicopter - Google Patents
A kind of helicopter reaction torque balance system and helicopter Download PDFInfo
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- CN208530838U CN208530838U CN201821000846.5U CN201821000846U CN208530838U CN 208530838 U CN208530838 U CN 208530838U CN 201821000846 U CN201821000846 U CN 201821000846U CN 208530838 U CN208530838 U CN 208530838U
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- helicopter
- reaction torque
- balance system
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Abstract
The utility model relates to a kind of helicopter reaction torque balance systems, belong to helicopter Pneumatic component design field, comprising: shell, the shell has a cavity and is equipped with the air inlet and exhaust outlet for being connected to the cavity on the housing, and the center line of the air inlet and the center line of exhaust outlet are in predetermined angle；Cross flow fan, the cross flow fan are set in the cavity, for guiding the air-flow flowed into from the air inlet to flow out from the exhaust outlet, to provide the lateral force for being used for balancing helicopter reaction torque；Central axis, the central axis are set in the cavity and are fixed on the shell, are used to support the cross flow fan and make the cross flow fan around the central axis rotation.The utility model can be improved the safety of helicopter landing and low-latitude flying, the power consumption for reducing the system, noise and level of vibration decline, can provide a certain size vertical component, so that helicopter center of gravity permissible range expands.
Description
Technical field
The utility model belongs to helicopter Pneumatic component design field more particularly to a kind of based on the straight of cross flow fan
Rise machine reaction torque balance system and helicopter.
Background technique
The pulling force that helicopter flight is generated mainly by rotor.When rotor, which is driven by engine by rotary shaft, to be rotated, rotation
The wing to air with torque (or opplied moment), air it is inevitable the same time with equal in magnitude, contrary reaction torque (or
Claim the moment of reaction) rotor is acted on, so that this reaction torque is transmitted on helicopter body by rotor again.If do not adopted
Measure is taken to be balanced, then this reaction torque will be such that helicopter rotates against rotor rotational direction.It is anti-twisted in order to eliminate this
Square acts to keep the course of helicopter, needs to arrange that certain structure, such as tail-rotor are anti-twisted to balance rotor on helicopter
Square is simultaneously carried out to the directional control of helicopter.
There is also many deficiencies while realizing function for traditional balance antitorque of rotor device --- tail-rotor, such as
In flight course or when ground is parked, tail-rotor may be collided with objects such as branch, electric wires, lead to the generation of accident；Tail-rotor is
Important noise source and vibration source on one helicopter can reduce component life, increase maintenance cost, aggravate flyer's fatigue.
Utility model content
The purpose of the utility model is to provide one kind based on cross flow fan, pneumatic efficiency is higher, is arranged in single rotor goes straight up to
Reaction torque balance system on tail beam balances antitorque of rotor and controls directional control and the maneuvering flight of helicopter.
The technical solution of the utility model is: a kind of helicopter reaction torque balance system comprising:
Shell, the shell have a cavity and are equipped with air inlet and the exhaust for being connected to the cavity on the housing
Mouthful, the center line of the air inlet and the center line of exhaust outlet are in predetermined angle；
Cross flow fan, the cross flow fan are set in the cavity, for guiding the air-flow flowed into from the air inlet
It is flowed out from the exhaust outlet, to provide the lateral force for being used for balancing helicopter reaction torque；
Central axis, the central axis are set in the cavity and are fixed on the shell, are used to support the crossing current
Fan simultaneously makes the cross flow fan around the central axis rotation.
In an embodiment of the utility model, it is equipped with lip in the air inlet outer ledge of the shell, it is vertical for providing
To pulling force, wherein the lip be arc line type.
It in an embodiment of the utility model, further include the flow deflector for being installed on exhaust ports, the flow deflector and shell
The hinged air flow direction for adjusting from exhaust outlet discharge.
In the above-described embodiments, the flow deflector hinge is located at the front end for the flow deflector that air-flow flows through.
In an embodiment of the utility model, the cross flow fan includes at least two fan units, the fan unit packet
The fan end plate for including one group of fan blade and being set to the electric fan two sides, wherein be equipped between adjacent two fan unit
Gap.
In an embodiment of the utility model, the predetermined angle is 80 °~100 °.
It in an embodiment of the utility model, further include protective cover, the protective cover is in netted, for preventing foreign matter from entering
The air inlet.
The utility model additionally provides a kind of helicopter, and the helicopter includes any of the above-described helicopter reaction torque balance system
System, the helicopter reaction torque balance system, which is installed on, goes straight up to drive end unit, realizes the lateral of helicopter Heading control for providing
Power, wherein the center shaft axis of the helicopter reaction torque balance system is parallel to helicopter screw propeller Plane of rotation, so that institute
It is vertical with helicopter screw propeller Plane of rotation to state the plane that air inlet and gas outlet center line are constituted in shell.
The helicopter reaction torque balance system based on cross flow fan and helicopter of the utility model are by carrying out tail boom
Again pneumatic design, by tail boom side jet provide thrust can balancing helicopter rotor reaction torque and control helicopter
Directional control and maneuvering flight.The relatively conventional tail-rotor structure of the course control system of this helicopter is simple, and safety is good, together
When reduce vibration and the noise of helicopter to a certain extent.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets the utility model
Embodiment, and be used to explain the principles of the present invention together with specification.
Fig. 1 is the helicopter reaction torque balance system structural schematic diagram of an embodiment of the present invention；
Fig. 2 is the helicopter reaction torque balance system interior views of an embodiment of the present invention；
Fig. 3 is the flow deflector schematic diagram of an embodiment of the present invention；
Fig. 4 is the cross flow fan structural schematic diagram of an embodiment of the present invention.
Specific embodiment
To keep the purposes, technical schemes and advantages of the utility model implementation clearer, below in conjunction with the utility model
Attached drawing in embodiment, is further described in more detail the technical scheme in the embodiment of the utility model.
As depicted in figs. 1 and 2, the helicopter reaction torque balance system of the utility model mainly includes shell 1, cross flow fan
3 and central axis 2, shell 1 is configured to have a hollow reservoir 13, and the air inlet for being connected to cavity 13 is equipped on shell 1
11 and exhaust outlet 12, air inlet 11 (center line L1) and exhaust outlet 12 (center line L2) are in predetermined angle；Cross flow fan 3 is set to
In the cavity 13 of shell 1, for guiding the air-flow from the inflow of air inlet 11 and flowing out air-flow from exhaust outlet 13, to provide use
In the lateral force of balancing helicopter reaction torque；Central axis 2 is arranged in the cavity 13 in shell 1, and shell 1 is fixed at both ends
On, it is used to support cross flow fan 3, cross flow fan 3 is rotated around central axis 2.
Helicopter reaction torque balance system, which is set to, goes straight up to drive end unit (or tail boom), passes through 11 suction airflow of air inlet, gas
Stream is turned to by cross flow fan 3 and is discharged from exhaust outlet 13, the lateral force of balancing helicopter reaction torque can be provided, to realize
The course deflection control of helicopter.
As shown in Fig. 2, the air-breathing above tail boom of cross flow fan 3 in helicopter reaction torque balance system, by cross
After flow fan 3 turns to, then from the side jet of lower right offer thrust, it is accordingly used in the angle that air-flow turns to conjunction should be arranged
Reason, i.e., be set as 80 °~100 ° for the predetermined angle of gas outlet and air inlet in the utility model, to generate the higher side of effect
To reaction torque power, angle shown in legend is 90 degree.
In the present invention, it is provided with lip 14 on the shell 1 being installed on tail boom and carries out Aerodynamic optimization design,
So that can produce certain additional lateral force when air-flow passes through, lip 14 be located at 1 gas suction side of shell (air inlet 11 it is outer
Side).In the utility model preferred embodiment, the lip 14 is arc line shaped, and rounding off is in 1 outside of shell and shell 1
The edge of middle air inlet 11.
In the present invention, (i.e. gas ejection side) arranges a series of deflectable water conservancy diversion at the gas outlet 12 of shell 1
Piece 4, for realizing the vector controlled of thrust.In the utility model embodiment, flow deflector 4 and shell 1 hingedly be can be realized
State deflection scheme.
As shown in figure 3, rounded in rectangle, both ends in the middle part of the section of the flow deflector 4 in the utility model embodiment, air-flow
Flow direction flows from left to right, and the hinge of flow deflector 4 is then located at the front end that air-flow flows through flow deflector 4, the i.e. left side of flow deflector 4
Position.
It should be noted that cross flow fan 3 is driven using motor in the present invention, thrust can be realized by speed change
Adjusting.
As shown in figure 4, cross flow fan 3 may include at least two fan units in the utility model, every fan unit is wrapped
It includes one group of fan blade 31 and 31 two sides of fan blade is set for gripping the fan end plate 32 of fan blade 31, fan
Fan unit is attached after being arranged parallel with central axis 2 by unit.Gap is wherein equipped between adjacent two fan unit.
Further include protective cover 5 in the utility model preferred embodiment, protective cover 5 is reticular structure, for prevent foreign matter into
Enter air inlet, the aperture size of reticular structure can be according to environment appropriate adjustment.
In addition, the utility model additionally provides a kind of helicopter, helicopter includes above-mentioned helicopter reaction torque balance system
System, helicopter reaction torque balance system, which is installed on, goes straight up to drive end unit, for providing the lateral force for realizing helicopter Heading control.Directly
Rising the set-up mode of machine reaction torque balance system are as follows: 2 axis of central axis is parallel to the setting of helicopter screw propeller Plane of rotation, so that
The plane that air inlet and gas outlet center line are constituted in the shell is vertical with helicopter screw propeller Plane of rotation.
Several aspects once should be noted that for the helicopter reaction torque balance system of the utility model:
(1) the shape basic size of helicopter reaction torque balance system should according to the tonnage of helicopter, reaction torque size and
Tail boom arrowhead etc. determines the shape basic size of tail boom air-jet device, while determining reaction torque balance system on tail boom
Longitudinally mounted position；
(2) diameter of the cross flow fan 3 embedded in helicopter reaction torque balance system and internal gas flow channel are basic
Size determines the diameter of embedded fan according to internal structure arrowhead and thrust requirements；Air-flow inner passage will guarantee
There are enough air-flows to pass through area；Air inlet transition wants round and smooth, and cambered surface is used to design, and reduces the total crushing of air-flow in the channel
It loses；The installation reserved space that inner passage also needs for cross flow fan 3.
(3) shape and size of the internal part of helicopter reaction torque balance system, internal part include: cross flow fan 3
The parameters such as chord length, aerofoil profile, the established angle of used fan blade 31, so that the pneumatic effect of acceleration deflecting of cross flow fan 3 is preferable,
Pitot loss is smaller simultaneously, and 31 structure of fan blade is referring to shown in Fig. 3；According to deformation and crossing current of the tail boom in flight
Structural requirement when fan 3 is arranged selects cross flow fan 3 appropriate along each drum length in tail boom direction, as described in Figure 4 i.e.
To have selected two fan units to constitute the helicopter reaction torque balance system of cross flow fan 3；Connect between each cylinder shape cross flow fan 3
Relay part is designed as detachable and has some gaps, can directly replace to single roller；Helicopter reaction torque balance
The suction side of system is equipped with lip 14, and lip 14 is camber line, and the outer dimension of lip 14 will meet claimed below: being capable of maximum limit
Degree expand tail boom above suction range, enable air-flow to can smoothly enter into tail boom air-jet device and without biggish total crushing
It loses, certain vertical force is capable of providing when air-flow flows through lip 14；The jet side setting of helicopter reaction torque balance system is led
Flow 4, flow deflector 4 are installed on exhaust outlet 12 and hinged with shell 1, and flow deflector 4 can be rotated around hinged shaft for adjusting exhaust outlet
The air flow direction of 12 discharges, shape will reduce stagnation pressure to the greatest extent under the premise of can smoothly meet and realize the deflecting requirement of spout air-flow
Loss.
(4) surface of helicopter reaction torque balance system carries out correction of the flank shape, while according to analysis result appropriate adjustment dependent part
Part size and position；It is connected between each adjacent curved surface using tangent rounding off, determines each curved surface connection interim size；End face it
Between using rounded corner connect, according to wrapping portion size and rounding off requirement, determine the radius size of rounded corner.
The helicopter reaction torque balance system and helicopter of the utility model have the advantages that
A) helicopter reaction torque balance system is required to meet the structure size limitation of tail boom；
B) air-breathing can utilize the energy of rotor down-wash flow under a variety of state of flights above tail boom；
C) lip 14 in tail boom gas suction side carries out Aerodynamic optimization design, so that can produce when air-flow passes through certain
Additional vertical force；
D) side is sprayed in tail boom gas, arranges a series of deflectable flow deflectors 4, realizes the vector controlled of thrust.
E) the aerofoil profile parameter of fan blade 31 passes through Aerodynamic optimization design in cross flow fan 3, so that air-flow is flowing through crossing current
Pitot loss is smaller when fan and acceleration effect is good；
F) cross flow fan 3 is truncated into the fan unit of several roller series arrangements, two adjacent fan lists along tail boom direction
There are certain intervals between member, can allow the deformation of tail boom to a certain extent；Simultaneously, so that 32 spacing of fan end plate becomes
Small (i.e. length of the fan blade 31 along 2 axis direction of central axis), so that 31 length of fan blade is relatively small, fan blade 31
Structural strength be enhanced, it is sufficient to bear rotation when centrifugal force；
G) cross flow fan 3 is driven using motor, and the variation of thrust is realized by the adjusting of cross flow fan revolving speed.
The accident that the helicopter reaction torque balance system and helicopter of the utility model can collide to avoid tail-rotor and foreign object,
Improve the safety of helicopter landing and low-latitude flying；It can use rotor downwash stream energy under a variety of state of flights, reduce
Power consumption；Noise and the more conventional tail-rotor of level of vibration are declined；Using vector gas puff Z-pinch module and rotational speed regulation mould
Block is more convenient for manipulating；Vector gas puff Z-pinch module is relied on, certain component can be provided in the vertical direction, so that helicopter
Center of gravity permissible range expands；Also more conventional tail-rotor is declined weight.
The above, the only optimal specific embodiment of the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with
Subject to the scope of protection of the claims.
Claims (8)
1. a kind of helicopter reaction torque balance system, which is characterized in that the helicopter reaction torque balance system includes:
Shell (1), the shell (1), which has a cavity (13) and is equipped on the shell (1), is connected to the cavity (13)
Air inlet (11) and exhaust outlet (12), the center line of the center line of the air inlet (11) and exhaust outlet (12) is in preset angle
Degree；
Cross flow fan (3), the cross flow fan (3) are set in the cavity (13), for guiding from the air inlet (11)
The air-flow of inflow is flowed out from the exhaust outlet (12), to provide the lateral force for being used for balancing helicopter reaction torque；
Central axis (2), the central axis (2) are set in the cavity (13) and are fixed on the shell (1), be used to support
The cross flow fan (3) simultaneously rotates the cross flow fan (3) around the central axis (2).
2. helicopter reaction torque balance system according to claim 1, which is characterized in that the air inlet in the shell (1)
Mouth (11) outer ledge is equipped with lip (14), for providing vertical pulling force, wherein the lip (14) is arc line type.
3. helicopter reaction torque balance system according to claim 1, which is characterized in that further include being installed on exhaust outlet
(12) flow deflector (4) at, the flow deflector (4) and shell (1) are hingedly for adjusting the air-flow stream from exhaust outlet (12) discharge
To.
4. helicopter reaction torque balance system according to claim 3, which is characterized in that flow deflector (4) the hinge position
In the front end for the flow deflector (4) that air-flow flows through.
5. helicopter reaction torque balance system according to claim 1, which is characterized in that the cross flow fan (3) is at least
Including two fan units, the fan unit is including one group of fan blade (31) and is set to the fan blade (31) two sides
Fan end plate (32), wherein gap is equipped between adjacent two fan unit.
6. helicopter reaction torque balance system according to claim 1, which is characterized in that the predetermined angle be 80 °~
100°。
7. helicopter reaction torque balance system according to claim 1, which is characterized in that it further include protective cover (5), it is described
Protective cover (5) is in netted, for preventing foreign matter from entering the air inlet (11).
8. a kind of helicopter, which is characterized in that the helicopter includes that the helicopter as described in claim 1 to 7 is any is anti-twisted
Square balance system, the helicopter reaction torque balance system, which is installed on, goes straight up to drive end unit, realizes the control of helicopter course for providing
The lateral force of system, wherein central axis (2) axis of the helicopter reaction torque balance system is parallel to helicopter screw propeller rotation
Plane, so that the plane that air inlet (11) and exhaust outlet (12) center line are constituted in the shell and helicopter screw propeller rotate
Plane is vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821000846.5U CN208530838U (en) | 2018-06-27 | 2018-06-27 | A kind of helicopter reaction torque balance system and helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821000846.5U CN208530838U (en) | 2018-06-27 | 2018-06-27 | A kind of helicopter reaction torque balance system and helicopter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208530838U true CN208530838U (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821000846.5U Active CN208530838U (en) | 2018-06-27 | 2018-06-27 | A kind of helicopter reaction torque balance system and helicopter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108639318A (en) * | 2018-06-27 | 2018-10-12 | 中国直升机设计研究所 | A kind of helicopter reaction torque balance system and helicopter |
-
2018
- 2018-06-27 CN CN201821000846.5U patent/CN208530838U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108639318A (en) * | 2018-06-27 | 2018-10-12 | 中国直升机设计研究所 | A kind of helicopter reaction torque balance system and helicopter |
| CN108639318B (en) * | 2018-06-27 | 2023-10-20 | 中国直升机设计研究所 | Helicopter reactive torque balancing system and helicopter |
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