Title:
PROPELLER AND AIRCRAFT
Document Type and Number:
WIPO Patent Application WO/2017/070978
Kind Code:
A1
Abstract:
Provided are a propeller and an aircraft. The propeller (100) comprises a propeller ring (110) and at least two propeller blades (120) connected to the propeller ring; the airfoil of the propeller blades is of the type ARA-D; the propeller blade is constituted by a root (121), a main body (122), and a blade tip (123), connected in sequence; the length L1 of the root is 20%-30% of the length L of the propeller blade, the angle of inclination at which the root is mounted is 10°-15°, and the width of the blade increases gradually along a first direction; the length L2 of the main body is 60%-70% of the length L of the propeller blade, and the width of the main body decreases gradually along the first direction; the smallest blade width of the main body is 55%-65% of its largest width; the length L3 of the blade tip is L3=(L-L1-L2), and the width of the blade tip decreases gradually along the first direction. The aerodynamic drag of the propeller is reduced and its efficiency is improved, thereby improving the flight speed and flight distance of the aircraft.
Inventors:
LI XIAOLIANG (CN)
LIANG ZHIYING (CN)
LIANG ZHIYING (CN)
Application Number:
PCT/CN2015/093836
Publication Date:
May 04, 2017
Filing Date:
November 05, 2015
Export Citation:
Assignee:
AUTEL ROBOTICS CO LTD (CN)
International Classes:
B64C11/18
Foreign References:
| CN203996873U | 2014-12-10 | |||
| US4773825A | 1988-09-27 | |||
| CN202642093U | 2013-01-02 | |||
| CN104583073A | 2015-04-29 | |||
| CN203558202U | 2014-04-23 | |||
| US20120189457A1 | 2012-07-26 | |||
| US4455003A | 1984-06-19 |
Attorney, Agent or Firm:
SHENZHEN AIDISEN INTELLECTUAL PROPERTY OFFICE (CN)
Download PDF: