CN206367596U - Many rotor blade devices - Google Patents
Many rotor blade devices Download PDFInfo
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- CN206367596U CN206367596U CN201621074383.8U CN201621074383U CN206367596U CN 206367596 U CN206367596 U CN 206367596U CN 201621074383 U CN201621074383 U CN 201621074383U CN 206367596 U CN206367596 U CN 206367596U
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- Prior art keywords
- blade
- many rotor
- root
- rotor blade
- devices
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Abstract
The utility model discloses a kind of many rotor blade devices, including：Central connecting part and multiple blades, wherein each blade is attached to the central connecting part in root position；Wherein, for each blade, whole blade is opened up to extend to the torsional angle in section to be distributed in non-linear negative twist angle；And on from root to the direction of blade tip, each blade is distributed since the first precalculated position using parabola sweepback.
Description
Technical field
The utility model is related to multi-rotor aerocraft field, more particularly to a kind of many rotor blade devices.
Background technology
With the development of technology, multi-rotor aerocraft is applied in increasing field.It is used as multi-rotor aerocraft
Power resources, the quality of blade performance directly affects aircraft load-carrying, noise, power consumption, maneuvering performance.Current blade is set
Meter is amplified by properller is designed mostly, but traditional propeller differs with current multi-rotor aerocraft applying working condition
Sample, therefore blade performance and not up to ultimate attainment.
Current blade performance boost is concentrated mainly in the optimization of blade parameter.On the one hand, in terms of two dimension, main performance
For optimization blade section aerofoil profile, airfoil performance is thus lifted；On the other hand, in terms of three-dimensional, it is mainly shown as that blade is opened up to string
The Combinatorial Optimization of length, thickness, torsional angle etc.；In addition, at overall aspect, being mainly shown as lobe numbers, Leaf positional distribution, wheel hub connection
The Combinatorial Optimization of form, spinner shape etc..By a series of optimization, blade performance obtains certain lifting.But, existing skill
The method of these Combinatorial Optimizations of art takes time and effort very much, and obtained a series of disaggregation stills need verification experimental verification.
Therefore, those skilled in the art is directed to developing a kind of many rotor blade devices without repetition test.
Utility model content
In view of the drawbacks described above of prior art, technical problem to be solved in the utility model is to provide a kind of without anti-
Many rotor blade devices that retrial is tested.
To achieve the above object, the utility model provides a kind of many rotor blade devices, including：Central connecting part and
Multiple blades, wherein each blade is attached to the central connecting part in root position；Wherein, for each blade, whole oar
Leaf is opened up to extend to the torsional angle in section to be distributed in non-linear negative twist angle；And on from root to the direction of blade tip, each blade
It is distributed since the first precalculated position using parabola sweepback.
Preferably, in described many rotor blade devices, on from root to the direction of blade tip, from root to blade tip
Direction on, each blade has the lower anti-distribution of bending since the second precalculated position.
Preferably, in described many rotor blade devices, the anti-inverted diherdral degree being distributed is according to rotor chi under the bending
Very little selection.
Preferably, in described many rotor blade devices, the anti-inverted diherdral degree being distributed is between 10 ° -40 ° under the bending
Between.
Preferably, in described many rotor blade devices, first precalculated position is in prolonging from root to blade tip
In the 80%-85% of elongation region.
Preferably, in described many rotor blade devices, second precalculated position is in prolonging from root to blade tip
In the 85%-95% of elongation region.
Preferably, in described many rotor blade devices, the sweepback curve of the parabola sweepback distribution, which is set, makes oar
Always flow velocity is constant to leaf sweepback part leading edge relative method.
Many rotor blade devices of the present utility model extend to non-linear negative twist angle distribution, hovering efficiency can be increased,
Reduce power consumption；The parabola swept tip of many rotor blade devices of the present utility model can reduce flight resistance, high-speed flight
Characteristic is good；Moreover, anti-blade tip can reduce blade tip whirlpool and oar under the sweepback bending of many rotor blade devices of the present utility model
Interference, increases stability, while also functioning to certain effect to the reduction that wind is made an uproar；In addition, many rotor blade dresses of the present utility model
The structure put is based on prior art, and remodeling is simple, without repetition test.
The technique effect of design of the present utility model, concrete structure and generation is made furtherly below with reference to accompanying drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Brief description of the drawings
Fig. 1 is the partial elevation view of many rotor blade devices according to the utility model preferred embodiment.
Fig. 2 is another partial elevation view of many rotor blade devices according to the utility model preferred embodiment.
Fig. 3 is the side view of many rotor blade devices according to the utility model preferred embodiment.
Fig. 4 is the top view of many rotor blade devices according to the utility model preferred embodiment.
Fig. 5 is the axis side view of many rotor blade devices according to the utility model preferred embodiment.
Fig. 6 is another axis side view of many rotor blade devices according to the utility model preferred embodiment.
It should be noted that accompanying drawing is used to illustrate the utility model, and unrestricted the utility model.Note, represent structure
Accompanying drawing may be not necessarily drawn to scale.Also, in accompanying drawing, same or similar element indicates same or similar mark
Number.
Embodiment
Fig. 1 is the partial elevation view of many rotor blade devices according to the utility model preferred embodiment, and Fig. 2 is according to this
Another partial elevation view of many rotor blade devices of utility model preferred embodiment, Fig. 3 is preferably real according to the utility model
The side view of many rotor blade devices of example is applied, Fig. 4 is many rotor blade devices according to the utility model preferred embodiment
Top view, Fig. 5 is the axis side view of many rotor blade devices according to the utility model preferred embodiment, and Fig. 6 is basis
Another axis side view of many rotor blade devices of the utility model preferred embodiment.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, according to many rotor blades of the utility model preferred embodiment
Device includes：Central connecting part 10 and multiple blades 20, connect wherein each blade 20 is attached to the center in root position
Socket part 10.
For each blade, whole blade is opened up to extend to the torsional angle in section to be distributed in non-linear negative twist angle.
Wherein, on from root to the direction of blade tip, (the example of the first presumptive area 21 of the adjoining root of each blade 20
Such as, root area and central region) using the distribution form of main flow blade, so to the root intensity of more excellent blade at present and in
Portion's pneumatic efficiency will not produce influence.
Wherein, for each blade, whole blade is opened up to extend to the torsional angle in section to be distributed in non-linear negative twist angle；And
On from root to the direction of blade tip, each blade uses parabola sweepback since the first precalculated position 21 (as shown in Figure 1)
Distribution.
Preferably, in described many rotor blade devices, on from root to the direction of blade tip, from root to blade tip
Direction on, each blade has the lower anti-distribution of bending since the second precalculated position 22 (as shown in Figure 2).
Preferably, the anti-inverted diherdral degree being distributed can be according to rotor size selection compared with the figure of merit under the bending.Further preferably
Ground, the anti-inverted diherdral degree θ (as shown in Figure 2) being distributed is between 10 ° -40 ° under the bending.
Preferably, in described many rotor blade devices, first precalculated position 21 is in from root to blade tip
In the 80%-85% of development length region.
Preferably, in described many rotor blade devices, second precalculated position 22 is in from root to blade tip
In the 85%-95% of development length region.
Thus, it is distributed along the non-linear negative twist angle of blade tip direction of extension, so as to increase hovering efficiency, reduces power consumption.
And preferably, the sweepback curve of the parabola sweepback distribution, which is set, makes blade sweepback part leading edge with respect to normal direction
It is constant come flow velocity.
On the whole, at least there is following advantage according to many rotor blade devices of the utility model preferred embodiment：
1. extend to the distribution of non-linear negative twist angle, can increase hovering efficiency, reduce power consumption；
2. parabola swept tip can reduce flight resistance, high-speed flight characteristic is good；
3. anti-blade tip can reduce the interference of blade tip whirlpool and oar under sweepback bending, increase stability, while the drop made an uproar to wind
It is low to also function to certain effect；
4. the structure is based on prior art, remodeling is simple, without repetition test.
Preferred embodiment of the present utility model has shown and described in described above, as previously described, it should be understood that this practicality is new
Type is not limited to form disclosed herein, is not to be taken as the exclusion to other embodiment, and available for various other groups
Close, change and environment, and above-mentioned teaching or the technology of association area can be passed through in utility model contemplated scope described herein
Or knowledge is modified.And the change and change that those skilled in the art are carried out do not depart from spirit and scope of the present utility model, then
All should be in the protection domain of the utility model appended claims.
Claims (7)
1. a kind of many rotor blade devices, it is characterised in that including：Central connecting part and multiple blades, wherein each blade exists
Root position is attached to the central connecting part；Wherein, for each blade, whole blade open up to the torsional angle in section extend in
Non-linear negative twist angle distribution；And on from root to the direction of blade tip, each blade is since the first precalculated position using throwing
The sweepback of thing line is distributed.
2. many rotor blade devices as claimed in claim 1, it is characterised in that on from root to the direction of blade tip, from
Root is on the direction of blade tip, and each blade has the lower anti-distribution of bending since the second precalculated position.
3. many rotor blade devices as claimed in claim 2, it is characterised in that the anti-inverted diherdral degree root being distributed under the bending
According to rotor size selection.
4. many rotor blade devices as claimed in claim 2, it is characterised in that the anti-inverted diherdral degree being distributed is situated between under the bending
Between 10 ° -40 °.
5. many rotor blade devices as claimed in claim 1 or 2, it is characterised in that first precalculated position is in from root
Portion is in the 80%-85% of the development length of blade tip region.
6. many rotor blade devices as claimed in claim 2, it is characterised in that second precalculated position be in from root to
In the 85%-95% of the development length of blade tip region.
7. many rotor blade devices as claimed in claim 1 or 2, it is characterised in that the sweepback of the parabola sweepback distribution
Curve setting makes blade sweepback part leading edge relative method, and always flow velocity is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621074383.8U CN206367596U (en) | 2016-09-22 | 2016-09-22 | Many rotor blade devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621074383.8U CN206367596U (en) | 2016-09-22 | 2016-09-22 | Many rotor blade devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206367596U true CN206367596U (en) | 2017-08-01 |
Family
ID=59388594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621074383.8U Expired - Fee Related CN206367596U (en) | 2016-09-22 | 2016-09-22 | Many rotor blade devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206367596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918669A (en) * | 2019-12-06 | 2021-06-08 | 北京二郎神科技有限公司 | Rotor of rotor craft and rotor craft |
-
2016
- 2016-09-22 CN CN201621074383.8U patent/CN206367596U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918669A (en) * | 2019-12-06 | 2021-06-08 | 北京二郎神科技有限公司 | Rotor of rotor craft and rotor craft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170801 Termination date: 20210922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |