Propeller and aircraft

A propeller and flight control technology, applied in propellers, aircraft, rotorcraft, etc., can solve the problems of low flight speed, large propeller resistance, and short cruising distance of unmanned aerial vehicles, and achieve a large Reynolds number, improve flight speed and flight distance. , the effect of improving efficiency

Active Publication Date: 2016-01-13
SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing propellers have high resistance and low efficiency, resulting in low flying speed and short cruising distance of unmanned aerial vehicles

Method used

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  • Propeller and aircraft
  • Propeller and aircraft
  • Propeller and aircraft

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] refer to Figure 1 to Figure 5 , the embodiment of the present invention proposes a propeller 100, including a paddle 110 and at least two blades 120 connected to the paddle 110; the airfoil of the blade 120 is ARA-D, and the blade 110 includes successively connected roots 121. The main body 122 and the blade tip 123. In the figure, the root 121 and the main body 122 are bounded by a dotted line, and the main body 122 and the blade tip 123 are bounded by a dotted line.

[0027] The blade has a length L, which is the length of the blade 110 in a first direction from the center of the cuff to...

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Abstract

The invention relates to the technical field of unmanned aerial vehicles, and particularly discloses a propeller and an aircraft. The propeller comprises a propeller hoop and at least two propeller blades connected with the propeller hoop. The wing type of the propeller blades is ARA-D, and each propeller blade is composed of a root portion, a main body portion and a blade tip portion which are sequentially connected. The length L1 of the root portion accounts for 20% to 30% of the length L of the propeller blades, and the length L of the propeller blades is the length, in the first direction from the center of the propeller hoop to the farthest end of the blade tip portions, of the propeller blades; the installing inclined angle of the root portions ranges from 10 degrees to 15 degrees, and the blade widths of the root portions are gradually increased in the first direction; the length L2 of the main body portions accounts for 60% to 70% of the length of the paddle blades, and the blade widths of the main body portions are gradually decreased in the first direction; the minimum blade width of the main body portions accounts for 55% to 65% of the maximum blade width of the main body portions; and the length L3 of the blade tip portions is equal to L-L1-L2, and the blade widths of the blade tip portions are gradually decreased in the first direction. According to the propeller, the air resistance is reduced, efficiency is improved, and therefore the flying speed and the flying distance of the aircraft are increased.

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 an unmanned aerial vehicle. Improving the efficiency of the propeller can greatly improve the flight performance of the unmanned aerial vehicle. [0003] Existing propellers have high resistance and low efficiency, resulting in low flight speed and short cruising distance of unmanned aerial vehicles. 【Content of invention】 [0004] The present invention aims to overcome the defects existing in the prior art and provide an improved propeller with reduced drag and improved 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 inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/00B64C11/18B64C27/467
CPCB64C11/18
Inventor 李晓亮梁智颖
Owner SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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