CN109747812A - A kind of winglet propeller - Google Patents
A kind of winglet propeller Download PDFInfo
- Publication number
- CN109747812A CN109747812A CN201811507213.8A CN201811507213A CN109747812A CN 109747812 A CN109747812 A CN 109747812A CN 201811507213 A CN201811507213 A CN 201811507213A CN 109747812 A CN109747812 A CN 109747812A
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- CN
- China
- Prior art keywords
- propeller
- winglet
- blade
- lift
- hub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Toys (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A kind of winglet propeller of the present invention belongs to field of mechanical structure design.A kind of winglet propeller, it applies on propeller, propeller includes propeller hub (4), blade (5), blade (5) is assemblied on propeller hub (4), it is characterized in that, the tip of the blade (5) is bent to the top airfoil of blade (5), is formed winglet (6).The present invention installs winglet 6 in propeller blade tip.Winglet 6 can weaken this influence around flow phenomenon to lift by hindering the air of upper and lower surface to stream, and lift induced drag caused by reducing because of wingtip vortex reduces the destruction streamed to lift, improve lift resistance ratio, increase propeller pulling force, improve propeller cruise efficiency, reduces flight oil consumption.
Description
Technical field
A kind of winglet propeller of the present invention belongs to field of mechanical structure design.
Background technique
For whirlpool paddle aircraft, propeller is the major impetus source that aircraft advances.The work of propeller blade and wing is former
Manage essentially identical, difference is: there are two the movements in direction for blade, first is that rotate around paddle shaft, first is that along heading advance.Spiral
In paddle motion process, can rive air, so that upper and lower surfaces generate pressure difference, fly before driving aircraft.
Due to the presence of blade upper and lower surfaces pressure difference, nearby blade lower surface air can be formed wing tip around upper surface is flowed to
Wingtip vortex 3 causes the pressure difference of wing tip near zone blade upper and lower surface to reduce, the lift drop generated so as to cause this region
It is low.Existing propeller and its wingtip vortex of generation are shown in Fig. 1.
Summary of the invention
The purpose of the present invention: the present invention is to overcome above-mentioned technical problem, and propose a kind of winglet propeller of the present invention.
Technical solution of the present invention:
A kind of winglet propeller, is applied on propeller, and propeller includes propeller hub 4, blade 5, and blade 5 is assemblied in paddle
On hub 4, the tip of the blade 5 is bent to the top airfoil 1 of blade 5, forms winglet 6.
The angle of the winglet 6 and propeller Plane of rotation is between 90 °~140 °.
The angle of the winglet 6 and propeller Plane of rotation is 90 °.
The angle of the winglet 6 and propeller Plane of rotation is 140 °.
Winglet (6) length is the 1/10~1/5 of propeller radius.
Winglet (6) length is the 1/10 of propeller radius.
Winglet (6) length is the 1/5 of propeller radius.
Detailed description of the invention
Fig. 1 is the wingtip vortex schematic diagram of existing propeller and its generation
Fig. 2 is the propeller with winglet
Wherein, 1- top airfoil, 2- lower aerofoil, 3- wingtip vortex, 4- propeller hub, 5- blade, 6- winglet
Specific embodiment
The present invention will be described in further detail with reference to the accompanying drawing.
A kind of winglet propeller, is applied on propeller, and propeller includes propeller hub 4, blade 5, and blade 5 is assemblied in paddle
On hub 4, the tip of the blade 5 is bent to the top airfoil 1 of blade 5, forms winglet 6.
The angle of the winglet 6 and propeller Plane of rotation is between 90 °~140 °.
The angle of the winglet 6 and propeller Plane of rotation is 90 °.
The angle of the winglet 6 and propeller Plane of rotation is 140 °.
6 length of winglet is the 1/10~1/5 of propeller radius.
6 length of winglet is the 1/10 of propeller radius.
6 length of winglet is the 1/5 of propeller radius.
The present invention is a kind of propeller, and propeller blade tip is with winglet.
During propeller motion, can rive air, so that upper and lower surfaces generate pressure difference, fly before driving aircraft.Due to paddle
The presence of leaf upper and lower surfaces pressure difference, nearby blade lower surface air can form wingtip vortex 3, cause the wing wing tip around upper surface is flowed to
The pressure difference of sharp near zone blade upper and lower surface reduces, and reduces so as to cause the pulling force that this region generates.The present invention is spiral
5 tip of paddle blade is formed by bending winglet 6 (see Fig. 2) to 5 top airfoil 1 of blade, and propeller includes propeller hub 4, blade 5, and blade 5 assembles
In on propeller hub 4.Winglet 6 can weaken this shadow around flow phenomenon to lift by hindering the air of upper and lower surface to stream
It rings, lift induced drag caused by reducing because of wingtip vortex reduces the destruction streamed to lift, improves lift resistance ratio, finally increases spiral shell
Paddle pulling force is revolved, propeller cruise efficiency is improved, reduces flight oil consumption.
The invention has the advantages that can be improved propeller cruise efficiency using winglet propeller, flight oil is reduced
Consumption.
Claims (7)
1. a kind of winglet propeller, is applied on propeller, propeller includes propeller hub (4), blade (5), blade (5) assembly
In on propeller hub (4), which is characterized in that the tip of the blade (5) is bent to the top airfoil (1) of blade (5), is formed winglet (6).
2. multiple winglet propeller according to claim 1, which is characterized in that the winglet (6) and propeller rotate
The angle of plane is between 90 °~140 °.
3. multiple winglet propeller according to claim 2, which is characterized in that the winglet (6) and propeller rotate
The angle of plane is 90 °.
4. multiple winglet propeller according to claim 2, which is characterized in that the winglet (6) and propeller rotate
The angle of plane is 140 °.
5. multiple winglet propeller according to claim 1, which is characterized in that winglet (6) length is propeller
The 1/10~1/5 of radius.
6. multiple winglet propeller according to claim 5, which is characterized in that winglet (6) length is propeller
The 1/10 of radius.
7. multiple winglet propeller according to claim 5, which is characterized in that winglet (6) length is propeller
The 1/5 of radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507213.8A CN109747812A (en) | 2018-12-11 | 2018-12-11 | A kind of winglet propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507213.8A CN109747812A (en) | 2018-12-11 | 2018-12-11 | A kind of winglet propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109747812A true CN109747812A (en) | 2019-05-14 |
Family
ID=66403670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811507213.8A Pending CN109747812A (en) | 2018-12-11 | 2018-12-11 | A kind of winglet propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109747812A (en) |
-
2018
- 2018-12-11 CN CN201811507213.8A patent/CN109747812A/en active Pending
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