Unlock instant, AI-driven research and patent intelligence for your innovation.

Transmission System of Coaxial Helicopter Rotor Measuring Signal

A technology for helicopter rotors and signal measurement, applied to signal transmission systems, instruments, etc., can solve the problems of difficult replacement of signal transmission lines, complex wiring of signal transmission lines, structural defects, etc., to avoid structural defects, improve safety performance, and practicability high effect

Inactive Publication Date: 2019-05-17
BEIHANG UNIV +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that the wiring of the signal transmission line in the prior art is complex, the replacement of the signal transmission line is difficult, and the structural defects caused by the notch

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
  • Transmission System of Coaxial Helicopter Rotor Measuring Signal
  • Transmission System of Coaxial Helicopter Rotor Measuring Signal
  • Transmission System of Coaxial Helicopter Rotor Measuring Signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 , 3 As shown, the present embodiment provides a transmission system for a coaxial helicopter rotor measurement signal, the transmission system includes a lower rotor measurement signal transmission device, and the rotor measurement signal transmission device includes a lower rotor signal transmission line 8 carrying the lower rotor measurement signal And receive and send the wireless transmission module 10 of lower rotor measuring signal;

[0031] Wherein, the wireless transmission module 10 is arranged on the outer wall of the outer shaft 6 between the top end of the outer shaft 6 and the top end of the outer shaft sleeve 5 .

[0032] In order to understand the above-mentioned technical solution of this embodiment, the following briefly introduces the relevant parts and their connections on the coaxial helicopter ground test bench, but it is not intended as a limitation to the above-mentioned technical solution.

[0033] The upper and lower rotors of...

Embodiment 2

[0042] Such as figure 1 , 3 As shown, the present embodiment is further defined on the basis of the above-mentioned embodiment 1:

[0043] The transmission system provided in this embodiment also includes a signal collector 9 connected to the lower rotor signal transmission line 8 and the wireless transmission module 10, for collecting the lower rotor measurement signal on the lower rotor signal transmission line 8, and collecting the lower rotor signal. The rotor measurement signal is sent to the wireless transmission module 10;

[0044] The signal collector 9 is arranged on the outer wall of the outer shaft 6 between the top end of the outer shaft 6 and the top end of the outer shaft sleeve 5 of the outer shaft sleeve.

[0045] In this embodiment, an external signal collector 9 is used to collect the lower rotor measurement signal on the lower rotor signal transmission line 8 , and send the collected lower rotor measurement signal to the wireless transmission module 10 . ...

Embodiment 3

[0053] Such as figure 1 , 2 As shown, the present embodiment is further defined on the basis of the above-mentioned embodiment 1:

[0054] The transmission system provided in this embodiment also includes an upper rotor measurement signal transmission device. The upper rotor measurement signal transmission device includes an upper rotor signal transmission line 4 pierced inside the inner shaft 1. The upper rotor signal transmission line 4 carries the upper rotor measurement signal.

[0055] The upper rotor hub 2 is arranged on the upper end of the inner shaft 1, the upper rotor, the upper rotor hub 2 and the inner shaft 1 are relatively stationary, and the upper rotor signal transmission line 4 drawn from the upper rotor is introduced into the interior of the inner shaft 1 from the top of the inner shaft 1, and then connected with The collector ring at the bottom of the inner shaft 1 is connected, and the upper rotor measurement signal on the upper rotor signal transmission l...

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 present invention relates to a coaxial helicopter rotor measurement signal transmission system so as to solve the problems of complex signal transmission wiring, high signal transmission wire replacement difficulty and structure defect caused by notch in the prior art. The system comprises a lower rotor measurement signal transmission device, wherein the lower rotor measurement signal transmission device comprises a lower rotor signal transmission line and a wireless transmission module for receiving and transmitting a lower rotor measurement signal, and the wireless transmission module is arranged on the outer wall of the outer shaft between the top end of the outer shaft and the top end of the outer shaft bush. According to the present invention, the wireless transmission module is used to receive and transmit the lower rotor measurement signal so as to achieve the wireless transmission of the lower rotor measurement signal, such that the groove arrangement on the outer shaft or the outer shaft bush is not required, and the structure defect problem is avoided; the wiring is simple so as to easily replace or adjust; and the wireless transmission module is arranged on the outer shaft between the top end of the outer shaft and the top end of the outer shaft bush, such that the relative movement between the outer shaft and the outer shaft bush can not be affected.

Description

technical field [0001] The invention relates to a transmission system for measuring signals of a coaxial helicopter rotor. Background technique [0002] Compared with single-rotor helicopters with tail rotors, coaxial helicopters use two pairs of upper and lower coaxially reversed rotors to balance the rotor torque, so there is no need for a tail rotor. Such a structure has the advantages of compact structure, easy maintenance, symmetrical aerodynamic characteristics, good hovering stability, and low accident rate. Of course, the coaxial helicopter also has its unavoidable shortcomings. The more prominent shortcomings are the aerodynamic interference between the upper and lower rotors, and because the control mechanisms of the two rotors are concentrated on one axis, the structure is complex and dense. Therefore, a large number of experimental studies are essential in the development of coaxial helicopters, and the most common way is to establish a ground test bed for groun...

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 Patents(China)
IPC IPC(8): G08C17/02
Inventor 尚红星李书安强林黄水林贺天鹏林谢伟
Owner BEIHANG UNIV