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Screw propeller and aerocraft

A technology of propeller and flight control, applied in propellers, aircraft, rotorcraft, etc., can solve the problems of low flight speed of aircraft, large propeller resistance, short cruising distance, etc., to improve flight speed and flight distance, reduce air resistance, The effect of improving flight performance

Inactive Publication Date: 2016-01-20
SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing propellers have high resistance, low efficiency, and poor stability, resulting in low flying speed and short cruising distance of the aircraft, which seriously affects the flight performance of the aircraft

Method used

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  • Screw propeller and aerocraft
  • Screw propeller and aerocraft
  • Screw propeller and aerocraft

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be understood that the embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] The existing propeller design has the defects of large resistance and low efficiency in application, which leads to low flight speed and short follow-on distance of the aircraft, which seriously affects the flight performance of the aircraft. Based on this, the present invention proposes a novel propeller design scheme to reduce resistance and improve efficiency. For example, when the design scheme of the present invention is used for a commonly used 9.4-inch propeller, it can obtain higher efficiency than the existing 9.4-inch pr...

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Abstract

The invention relates to the technical field of an aerocraft, in particular to a screw propeller and the aerocraft. The screw propeller comprises an oar hoop and at least two blades which are connected with the oar hoop, wherein at a position (the proportion of the distance from the position to the center of the oar hoop to the radius of the screw propeller is P), the attack angle of the blades is beta, beta is the continuous function of the radius proportion P and satisfies the following conditions that when P is more than or equal to 0 and less than or equal to 25 percent, beta is more than or equal to 10 degrees and less than or equal to 12 degrees; when P is more than 25 and less than or equal to 90 percent, beta is more than or equal to 8.75 degrees and less than 12 degrees; when P is more than 90 percent and less than or equal to 100 percent, beta is more than or equal to 8 degrees and less than or equal to 9 degrees. Due to the fact that different attack angles are arranged at different positions of the blades of the screw propeller, the air resistance is reduced, the efficiency is improved, and the flying speed and the flying distance of the aerocraft are increased; due to the fact that the attack angle beta of the screw propeller is continuously changed, the stability of the screw propeller is improved, and the flying performance of the aerocraft is improved.

Description

【Technical field】 [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a propeller and an aircraft. 【Background technique】 [0002] The propeller is a power component that generates the lift, pulling force and operating force necessary for the flight of the aircraft. Improving the efficiency of the propeller can greatly improve the flight performance of the aircraft. [0003] The existing propellers have high resistance, low efficiency, and poor stability, resulting in low flight speed and short cruising distance of the aircraft, which seriously affect the flight performance of the aircraft. 【Content of invention】 [0004] The present invention aims to provide a propeller with low resistance and high efficiency and an aircraft using the propeller. [0005] In order to solve the above technical problems, the present invention provides the following technical solutions: [0006] In one aspect, the present invention provides a pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/00B64C11/16B64C27/46
CPCB64C11/18
Inventor 李晓亮梁智颖
Owner SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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