Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF0 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Propeller
  • Propeller
  • Propeller

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B64C11/48B64D35/06
CPCB64C11/48B64D35/06
Inventor 封硕吕毅波赵晓强苏进展
Owner CHANGAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com