CN207045730U - The special propeller of the small-sized unmanned plane of tilting rotor - Google Patents
The special propeller of the small-sized unmanned plane of tilting rotor Download PDFInfo
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- CN207045730U CN207045730U CN201721012709.9U CN201721012709U CN207045730U CN 207045730 U CN207045730 U CN 207045730U CN 201721012709 U CN201721012709 U CN 201721012709U CN 207045730 U CN207045730 U CN 207045730U
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Abstract
The utility model discloses a kind of special propeller of the small-sized unmanned plane of tilting rotor, it is made up of propeller hub and blade, wherein, hole is offset formed with electric machine main shaft mounting hole and moment of torsion in the card of propeller hub, moment of torsion is offset hole and is evenly distributed on around electric machine main shaft mounting hole；Blade is divided into two leaves and three leaves, and direction of rotation, which is divided into, to be rotated forward and reversely rotate, and angle is the quantity of 360 ° divided by blade between adjacent blades, and blade tip sweepback has rounding.It is of the present utility model to be beneficial in that：(1) blade tip sweepback uses rounded feature, not only reduces the induced drag of blade tip, improves the lift of propeller, and then improves the efficiency of propeller well, and reduces the noise of propeller；(2) moment of torsion is devised on propeller hub and offsets hole, counteracts caused moment of torsion during propeller works, the bending resistance of propeller, torsional strength are good.
Description
Technical field
It the utility model is related to a kind of propeller, and in particular to a kind of special spiral of small-sized unmanned plane of tilting rotor
Oar, belong to unmanned air vehicle technique field.
Background technology
The small-sized unmanned plane of tilting rotor is typically chosen fixed-wing propeller or more propeller aircrafts, because propeller does not have
With good grounds type is designed, so causing propeller following some problems to be present：
1st, efficiency is low, and aircraft can not play performance well.
2nd, bending resistance, torsional rigidity do not do strict design and processing, when aircraft meets with adverse circumstances in flight course,
Aircraft power system can not securely and reliably make reasonable response, and aircraft can not have safe margin space well.
Noise when the 3rd, working does not control rationally, and vibrations caused by noise are done on flight control system and influenceed, and influence to fly
Machine flight quality and reliability, while Noise upon Environment and personnel can bring injury, noise when being worked for special user group
Aircraft can be exposed, it is impossible to do concealed flight well.
4th, weight and dynamic balancing is not well positioned to meet requirement, can be because propeller weight be asked during aircraft encounter adverse circumstances
Topic causes throttle can not follow response moment, influences flight quality and flight safety；In addition, the dynamic balancing of propeller can produce not
Rule noise, the vibrations of aggravation power motor, body and mission payload, influence task and obtain quality.
Utility model content
To solve the deficiencies in the prior art, the purpose of this utility model be to provide a kind of efficiency high, anti-torsional strength it is good,
The propeller that noise is low, dynamic balancing coefficient is high, the small-sized unmanned plane of tilting rotor is special.
In order to realize above-mentioned target, the utility model adopts the following technical scheme that：
A kind of special propeller of small-sized unmanned plane of tilting rotor, is made up of propeller hub and blade, it is characterised in that
Hole is offset formed with electric machine main shaft mounting hole and moment of torsion in the card of foregoing propeller hub, moment of torsion is offset hole and is evenly distributed on
Around electric machine main shaft mounting hole；
Foregoing blade is divided into two leaves and three leaves, and direction of rotation, which is divided into, to be rotated forward and reversely rotate, angle between adjacent blades
For 360 ° divided by the quantity of blade, blade tip sweepback has rounding.
The special propeller of the small-sized unmanned plane of foregoing tilting rotor, it is characterised in that foregoing propeller hub and blade pass through
Integrated molding is connected.
The special propeller of the small-sized unmanned plane of foregoing tilting rotor, it is characterised in that aforementioned motor spindle mounting hole
Processed with moment of torsion counteracting hole in integrated molding by mould to come.
The special propeller of the small-sized unmanned plane of foregoing tilting rotor, it is characterised in that the axle center part of foregoing propeller hub is thick
Spend for 8mm-30mm, a diameter of 400mm-800mm, the pitch 200mm-380mm of blade.
The special propeller of the small-sized unmanned plane of foregoing tilting rotor, it is characterised in that foregoing blade uses lightweight
Foamed good aerofoil profile bead particles carry out internal sandwich filling.
The special propeller of the small-sized unmanned plane of foregoing tilting rotor, it is characterised in that foregoing blade uses two floor heights
Strength carbon fiber cloth carries out outer surface parcel, and foregoing two layers of high-strength carbon fiber cloth intersects laying using 0 ° with 90 °.
It is of the present utility model to be beneficial in that：
(1) blade tip sweepback uses rounded feature, reduces the induced drag of blade tip, improves the lift of propeller, and then
The efficiency of propeller is improved well；
(2) blade tip sweepback uses rounded feature, reduces the noise of propeller；
(3) moment of torsion is devised on propeller hub and offsets hole, counteracts caused moment of torsion during propeller works, propeller resists
It is curved, torsional strength is good；
(4) blade using light-weighted foamed good aerofoil profile bead particles to carry out internal sandwich filling, using two
Floor height strength carbon fiber cloth carries out 0 ° of outer surface and intersects laying with 90 °, improves the dynamic balancing coefficient of propeller.
Brief description of the drawings
Fig. 1 is the front view of propeller of the present utility model；
Fig. 2 is the rearview of propeller of the present utility model；
Fig. 3 is the side view of propeller of the present utility model.
The implication of reference in figure：1- propeller hubs, 2- blades, 11- electric machine main shafts mounting hole, 12- moments of torsion offset hole, 21-
Rounding.
Embodiment
Make specific introduce to the utility model below in conjunction with specific embodiment.
Referring to figs. 1 to Fig. 3, the special propeller of the small-sized unmanned plane of tilting rotor of the present utility model is by propeller hub 1 and oar
Leaf 2 forms.
First, propeller hub
Hole 12 is offset formed with electric machine main shaft mounting hole 11 and moment of torsion in the card of propeller hub 1, moment of torsion is offset hole 12 and uniformly divided
Cloth is around electric machine main shaft mounting hole 11.
The axle center part thickness of propeller hub 1 is 8mm-30mm (preferably 18mm).
2nd, blade
Blade 2 is divided to for two leaves and three leaves, and direction of rotation, which is divided into, to be rotated forward and reversely rotate (rotation produces thrust), adjacent
2 angles of blade are the quantity of 360 ° divided by blade 2, and blade tip sweepback has rounding 21, and rounding 21 has drag reduction, the work of noise reduction
With.
A diameter of 400mm-800mm (preferably 533mm) of blade 2, pitch are 200mm-380mm (preferably 330mm).
Blade 2 carries out internal sandwich filling using light-weighted foamed good aerofoil profile bead particles, using two layers
High-strength carbon fiber cloth carries out outer surface parcel, and two layers of the high-strength carbon fiber cloth intersects laying using 0 ° and 90 °, intersects paving
Layer can offset anisotropy.
When making blade 2, light-weighted foamed good aerofoil profile bead particles are put simultaneously with high-strength carbon fiber cloth
Enter in metal die, then HTHP is solidified, the blade 2, Ke Yiti made using such a design method
The dynamic balancing coefficient of high propeller.
As a kind of preferable scheme, propeller hub 1 and blade 2 are connected by integrated molding.
Processed it is further preferred that electric machine main shaft mounting hole 11 and moment of torsion offset hole 12 in integrated molding by mould
.
Confirmed by CFD and wind tunnel test：The special propeller oar of the small-sized unmanned plane of tilting rotor of the present utility model
Sharp induced drag reduces, improved efficiency, and noise reduces, and bending resistance, torsional strength improve, and dynamic balancing coefficient improves, and service life increases
Add.
It should be noted that above-described embodiment does not limit the utility model in any form, it is all to use equivalent substitution or wait
The technical scheme that the mode of effect conversion is obtained, all falls within the scope of protection of the utility model.
Claims (6)
1. the special propeller of the small-sized unmanned plane of tilting rotor, it is made up of propeller hub (1) and blade (2), it is characterised in that
Hole (12) are offset formed with electric machine main shaft mounting hole (11) and moment of torsion in the card of the propeller hub (1), moment of torsion offsets hole
(12) it is evenly distributed on around electric machine main shaft mounting hole (11)；
The blade (2) is divided into two leaves and three leaves, and direction of rotation, which is divided into, to be rotated forward and reversely rotate, and adjacent blades are pressed from both sides between (2)
Angle is the quantity of 360 ° divided by blade (2), and blade tip sweepback has rounding (21).
2. the special propeller of the small-sized unmanned plane of tilting rotor according to claim 1, it is characterised in that the propeller hub
(1) it is connected with blade (2) by integrated molding.
3. the special propeller of the small-sized unmanned plane of tilting rotor according to claim 2, it is characterised in that the motor
Spindle mounting hole (11) and moment of torsion are offset hole (12) and processed in integrated molding by mould to come.
4. the special propeller of the small-sized unmanned plane of tilting rotor according to claim 1, it is characterised in that the propeller hub
(1) axle center part thickness is 8mm-30mm, a diameter of 400mm-800mm, the pitch 200mm-380mm of blade (2).
5. the special propeller of the small-sized unmanned plane of tilting rotor according to claim 1, it is characterised in that the blade
(2) internal sandwich filling is carried out using light-weighted foamed good aerofoil profile bead particles.
6. the special propeller of the small-sized unmanned plane of tilting rotor according to claim 5, it is characterised in that the blade
(2) outer surface parcel is carried out using two layers of high-strength carbon fiber cloth, two layers of high-strength carbon fiber cloth is using 0 ° and 90 ° of friendships
Pitch laying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721012709.9U CN207045730U (en) | 2017-08-14 | 2017-08-14 | The special propeller of the small-sized unmanned plane of tilting rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721012709.9U CN207045730U (en) | 2017-08-14 | 2017-08-14 | The special propeller of the small-sized unmanned plane of tilting rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207045730U true CN207045730U (en) | 2018-02-27 |
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ID=61503975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721012709.9U Active CN207045730U (en) | 2017-08-14 | 2017-08-14 | The special propeller of the small-sized unmanned plane of tilting rotor |
Country Status (1)
| Country | Link |
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| CN (1) | CN207045730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110329503A (en) * | 2019-07-25 | 2019-10-15 | 北方工业大学 | Self-adaptive strain-torsional intelligent tilt rotor propeller blade |
-
2017
- 2017-08-14 CN CN201721012709.9U patent/CN207045730U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110329503A (en) * | 2019-07-25 | 2019-10-15 | 北方工业大学 | Self-adaptive strain-torsional intelligent tilt rotor propeller blade |
| CN110329503B (en) * | 2019-07-25 | 2024-04-19 | 北方工业大学 | Self-adaptive strain torsion intelligent tilting rotor propeller blade |
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