Propeller

A propeller and arc tooth technology applied to propellers. It can solve the problems of high noise, increase the complexity of engine design, increase the weight, etc., and achieve the effect of low noise, high speed and improved power level

Pending Publication Date: 2020-04-14
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the disadvantage of high noise, the coaxial counter-rotating propeller has not been used well on passenger planes, and can only be used on military planes
Another disadvantage of the coaxial counter-rotating propeller is that it increases the design complexity of the engine and increases the weight, so it has not been widely used on passenger aircraft.

Method used

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Examples

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Embodiment Construction

[0022] The present invention is further described below in conjunction with accompanying drawing:

[0023] see Figure 1 to Figure 3 , a propeller, comprising a transmission shaft 4, a first propeller 1, a second propeller 5 and a second propeller transmission mechanism; the top of the transmission shaft 4 is fixedly provided with the first propeller 1, and the transmission shaft 4 below the first propeller 1 is provided with The second propeller transmission mechanism, the second propeller 5 is arranged on the second propeller transmission mechanism;

[0024] The second propeller transmission mechanism comprises an upper arc tooth surface gear 2, a lower arc tooth surface gear 6 and a spiral bevel gear 3; the lower arc tooth surface gear 6 is fixedly arranged on the transmission shaft 4, and the transmission shaft above the lower arc tooth surface gear 6 4. There is an upper arc tooth surface gear 2 through the bearing, and two spiral bevel gears 3 are arranged between the u...

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Abstract

A propeller comprises a transmission shaft, a first propeller body, a second propeller body and a second propeller transmission mechanism. A first propeller is fixedly arranged at the top of the transmission shaft, a second propeller transmission mechanism is arranged on the transmission shaft below the first propeller, and the second propeller is arranged on the second propeller transmission mechanism; compared with a traditional coaxial reverse propeller structure, the design that the bevel gear is matched with the face gear is adopted, the stability of the propeller during high-speed operation can be effectively improved, and the power level of an airplane is improved.

Description

technical field [0001] The invention belongs to the technical field of turbo propellers, in particular to a propeller. Background technique [0002] Contra-rotating propellers are a type of propeller unique to turboprop engines. The biggest difference between it and ordinary propellers is that there are two sets of propellers rotating side by side on a single engine. The angular velocity directions of these two sets of propellers are opposite, so they are called coaxial counter-rotating propellers. [0003] The two sets of propellers of coaxial counter-rotating propellers are usually connected to the same engine and use a set of planetary gears to achieve counter-rotation. Coaxial counter-rotating propellers are not counter-rotating propellers, which refer to two different engines on either side of the aircraft whose propellers turn in opposite directions. [0004] And the biggest shortcoming of the existing coaxial counter-rotating propeller is that the noise generated du...

Claims

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Application Information

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IPC IPC(8): B64C11/48B64D35/06
CPCB64C11/48B64D35/06
Inventor 封硕吕毅波赵晓强苏进展
Owner CHANGAN UNIV
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