CN202765286U - High-efficiency propeller - Google Patents
High-efficiency propeller Download PDFInfo
- Publication number
- CN202765286U CN202765286U CN 201220240493 CN201220240493U CN202765286U CN 202765286 U CN202765286 U CN 202765286U CN 201220240493 CN201220240493 CN 201220240493 CN 201220240493 U CN201220240493 U CN 201220240493U CN 202765286 U CN202765286 U CN 202765286U
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- propeller
- efficiency
- rotation speed
- utility
- cruise
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Abstract
A high-efficiency propeller is provided with two blades, wherein the diameter D is 1.3-1.7 m, the propeller pitch is fixed, the maximum chord length C is 0.12-0.15 m, the propeller pitch angle Theta in the position of 75% of the radius is 16-22 degrees, and the highest efficiency is up to 85%. The utility model provides the novel propeller for a universal airplane. The novel propeller solves the problem that the efficiency of an existing propeller is generally and relatively low. The applicable airplane meets the requirements that the cruise speed is 80-200 km/h, the cruise rotation speed is 1500-2000 r/min, the maximum rotation speed is 2400 r/min, the weight is 240-480 kg, and the lift-drag ratio is 16-28.
Description
Technical field: the utility model relates to a kind of screw propeller, and especially a kind of high efficiency screw propeller belongs to field of aerospace technology.
Background technology: the global general-use aircraft has 320,000 approximately, wherein account for 60% with screw propeller as the general-purpose aircraft of propelling unit, and at present propeller efficiency substantially below 75% even lower, in order to improve the degree of utilization of general-purpose aircraft power, build energy saving and environment friendly General Aviation industry, must design high efficiency screw propeller, to improve the degree of utilization of the energy.
Summary of the invention: for above-mentioned the deficiencies in the prior art, the utility model provides a kind of high efficiency screw propeller.
For achieving the above object, the technical solution adopted in the utility model is: a kind of high efficiency screw propeller, and its blade quantity is 2, diameter D is 1.3-1.7 rice, and fixed pitch, maximum chord length C are 0.12-0.15 rice, the propeller pitch angle θ of 75% radius is the 16-22 degree, and peak efficiency can reach 85%.
The utility model provides a kind of new type propeller that is used for general-purpose aircraft, and this new type propeller has solved the general problem on the low side of existing propeller efficiency.Its applicable aircraft is: cruising speed 80-200km/h, cruising speed 1500-2000r/min, maximum speed 2400r/min, weight 240-480kg, 1ift-drag ratio 16-28.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the birds-eye view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 1.
Fig. 4 is the A-A cutaway view of Fig. 1.
The specific embodiment:
Such as Fig. 1-shown in Figure 4, a kind of high efficiency screw propeller, its blade quantity is 2, and diameter D is 1.4 meters, and fixed pitch, maximum chord length C are 0.14 meter, and the propeller pitch angle θ of 75% radius is 20 degree.
Claims (1)
1. high efficiency screw propeller, it is characterized in that: its blade quantity is 2, and diameter D is 1.3-1.7 rice, and fixed pitch, maximum chord length C are 0.12-0.15 rice, and the propeller pitch angle θ of 75% radius is the 16-22 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220240493 CN202765286U (en) | 2012-05-25 | 2012-05-25 | High-efficiency propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220240493 CN202765286U (en) | 2012-05-25 | 2012-05-25 | High-efficiency propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202765286U true CN202765286U (en) | 2013-03-06 |
Family
ID=47771880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220240493 Expired - Fee Related CN202765286U (en) | 2012-05-25 | 2012-05-25 | High-efficiency propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202765286U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253295A (en) * | 2015-10-30 | 2016-01-20 | 深圳市道通智能航空技术有限公司 | Screw propeller and aerocraft |
| CN105346720A (en) * | 2015-11-13 | 2016-02-24 | 深圳市道通智能航空技术有限公司 | Blades, propeller and unmanned aerial vehicle |
| WO2017128744A1 (en) * | 2016-01-27 | 2017-08-03 | 深圳市大疆创新科技有限公司 | Propeller, power assembly, and aircraft |
| WO2017128743A1 (en) * | 2016-01-28 | 2017-08-03 | 深圳市大疆创新科技有限公司 | Propeller, power assembly, and aircraft |
-
2012
- 2012-05-25 CN CN 201220240493 patent/CN202765286U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253295A (en) * | 2015-10-30 | 2016-01-20 | 深圳市道通智能航空技术有限公司 | Screw propeller and aerocraft |
| CN105346720A (en) * | 2015-11-13 | 2016-02-24 | 深圳市道通智能航空技术有限公司 | Blades, propeller and unmanned aerial vehicle |
| CN105346720B (en) * | 2015-11-13 | 2018-07-06 | 深圳市道通智能航空技术有限公司 | Blade, propeller and unmanned vehicle |
| WO2017128744A1 (en) * | 2016-01-27 | 2017-08-03 | 深圳市大疆创新科技有限公司 | Propeller, power assembly, and aircraft |
| WO2017128743A1 (en) * | 2016-01-28 | 2017-08-03 | 深圳市大疆创新科技有限公司 | Propeller, power assembly, and aircraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20160525 |