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

Omnidirectional vectored thrust cycloidal propeller

A vector thrust and cycloidal propeller technology, applied in the field of omnidirectional vector thrust cycloidal propellers, can solve the problems of large aerodynamic resistance, heavy structure, single thrust direction, etc., achieve high structural efficiency, reduce induced loss, area and span smaller than the effect

Inactive Publication Date: 2010-10-20
NORTHWESTERN POLYTECHNICAL UNIV
View PDF9 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to overcome the disadvantages of heavy structure, large aerodynamic resistance, or single thrust direction existing in the prior art, the present invention proposes an omnidirectional vector thrust cycloidal propeller

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
  • Omnidirectional vectored thrust cycloidal propeller
  • Omnidirectional vectored thrust cycloidal propeller
  • Omnidirectional vectored thrust cycloidal propeller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This embodiment is a cycloidal propeller for an aircraft, including a propeller and a cycloidal propeller. The propeller includes a propeller blade 2, a propeller shaft 6 and a propeller hub 4; the cycloidal propeller includes a cycloidal propeller blade 1, a control rod 3, an operating rocker arm 12, a spherical hinge 8 and an eccentric ring positioning mechanism 17.

[0058] The propeller blade 2 adopts a single-beam structure made of carbon fiber composite material, and the airfoil used is a Clark-Y airfoil with relatively large thickness and good lift-drag characteristics. The propeller blade 2 has an aspect ratio of 8 and a chord length of 10 cm. The paddle hub 4 is hollow and has a diameter of 32cm. The diameter of propeller rotating shaft 6 is 8cm. The inside of the propeller blade 2 is equipped with a control rod 3 (such as Image 6 Section A-A shown). The leading edge of the propeller blade 2 is swept back by 45 degrees at the blade tip, and the cycloidal b...

Embodiment 2

[0069] This embodiment is a cycloidal propeller for an aircraft, including a propeller and a cycloidal propeller. The propeller includes a propeller blade 2, a propeller shaft 6 and a propeller hub 4; the cycloidal propeller includes a cycloidal propeller blade 1, a control rod 3, an operating rocker arm 12, a spherical hinge 8 and an eccentric ring positioning mechanism 17. There are 3 propeller blades and cycloidal blades in this embodiment.

[0070] The propeller blade 2 adopts a single beam structure made of carbon fiber composite material, and the airfoil used is the HS1-404 airfoil commonly used by propellers. The propeller blade 2 has an aspect ratio of 7 and a chord length of 5 cm. The paddle hub 4 is hollow and has a diameter of 16cm. The diameter of propeller rotating shaft 6 is 4cm. The inside of the propeller blade 2 is equipped with a control rod 3 (such as Image 6 Section A-A shown). The leading edge of the propeller blade 2 is swept back by 45 degrees at t...

Embodiment 3

[0078] This embodiment is a cycloidal propeller for an aircraft, including a propeller and a cycloidal propeller. The propeller includes a propeller blade 2, a propeller shaft 6 and a propeller hub 4; the cycloidal propeller includes a cycloidal propeller blade 1, a control rod 3, an operating rocker arm 12, a spherical hinge 8 and an eccentric ring positioning mechanism 17. There are 6 propeller blades and cycloidal blades in this embodiment.

[0079] The propeller blade 2 adopts a single beam structure made of carbon fiber composite material, and the airfoil used is the E197 airfoil. The aspect ratio of the propeller blade 2 is 7.5, and the chord length is 20cm. The paddle hub 4 is hollow and has a diameter of 60cm. The diameter of propeller rotating shaft 6 is 20cm. The inside of the propeller blade 2 is equipped with a control rod 3 (such as Image 6 Section A-A shown). The leading edge of the propeller blade 2 is swept back by 45 degrees at the blade tip, and the cyc...

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

The invention discloses an omnidirectional vectored thrust cycloidal propeller, which comprises a propeller, a cycloidal oar and a cycloidal oar eccentric circle positioning mechanism, wherein the cycloidal oar comprises cycloidal oar blades in the same number as propeller blades, control pull rods, an operating rock arm and a cycloidal oar blade spherical hinge; each cycloidal oar blade is hinged with a propeller blade at rear grazing point of the front edge of the propeller blade; the airfoil surface of each cycloidal oar blade is vertical to that of a propeller blade; an eccentric circular ring of the cycloidal oar eccentric circle positioning mechanism is sleeved on a propeller shaft; the connecting rod of the spherical head of each spherical hinge is connected with the eccentric circular ring respectively; each control pull rod is connected with a cycloidal oar blade; the operating rock arm is positioned in a spanwise symmetrical surface of the cycloidal oar blades; the cycloidal oar blade spherical hinge at one end of the operating rock arm is connected with one end of the control pull rods; and the other end of the operating rock arm is fixedly connected to a cycloidal oar blade tubular beam. The omnidirectional vectored thrust cycloidal propeller of the invention combines the advantages of the cycloidal oar and the conventional propeller and has an omnidirectional vectored thrust while improving aerodynamic efficiency of the conventional propeller.

Description

technical field [0001] The invention belongs to the field of thrusters, in particular to an omnidirectional vector thrust cycloidal propeller. Background technique [0002] Cycloidal propeller, also known as straight-wing propeller, is a propulsion device that can provide instantaneous variable omnidirectional vector thrust. It has the characteristics of high efficiency and fast change of vector thrust. [0003] The Chinese patent CN85103046A applied by Li Renguo discloses a cycloid paddle that adopts a cam as a control mechanism. The purpose of the invention is to avoid the use of the conventional slider link mechanism, try to reduce the complexity of the system and improve the mechanical efficiency. The control mechanism in this patent consists of a cam disc on which the vanes are mounted. The blade disk drives the blade to revolve around the cam disk. At the same time, two guide wheels are installed on the blade disc, and the guide wheels move inside the cam of the cam...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B63H1/10
CPCB63H1/10
Inventor 胡峪宋笔锋李为吉王刚唐继伟
Owner NORTHWESTERN POLYTECHNICAL 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