Title:
PROPELLER AND AIRCRAFT
Document Type and Number:
WIPO Patent Application WO/2021/043330
Kind Code:
A1
Abstract:
Provided are a propeller and an aircraft comprising the propeller. The propeller comprises a propeller hub (1) and blades (2). At the positions of the blades (2) 20% away from the center of the propeller hub (1), a first chord length is 58 mm - 62 mm, and a first torsion angle is 21.5 degrees - 22.5 degrees; at the positions 50% away from the center of the propeller hub (1), a second chord length is 45 mm - 47 mm, and a second torsion angle is 15.5 degrees - 16.5 degrees; at the positions 75% away from the center of the propeller hub (1), a third chord length is 30 mm - 32 mm, and a third torsion angle is 11.5 degrees - 12.5 degrees; and at the positions 100% away from the center of the propeller hub (1), a fourth chord length is 21 mm - 23 mm, and a fourth torsion angle is 8.5 degrees - 9.5 degrees. The propeller further comprises a first airfoil and a second airfoil. Setting the specific airfoil, torsion angle and chord length distributions effectively ensures that the blades have optimal work performance, and effectively improves the pneumatic efficiency of the propeller.
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Inventors:
ZHANG HAILANG (CN)
Application Number:
PCT/CN2020/122837
Publication Date:
March 11, 2021
Filing Date:
October 22, 2020
Export Citation:
Assignee:
AUTEL ROBOTICS CO LTD (CN)
International Classes:
B64C11/20; B64C11/18; B64C27/467
Foreign References:
| CN210653619U | 2020-06-02 | |||
| CN207565834U | 2018-07-03 | |||
| CN109178295A | 2019-01-11 | |||
| CN208947584U | 2019-06-07 | |||
| CN206202665U | 2017-05-31 | |||
| JPH0840392A | 1996-02-13 | |||
| CN208993923U | 2019-06-18 | |||
| US20170355454A1 | 2017-12-14 | |||
| CN205418070U | 2016-08-03 |
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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