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

Rotor model test stand dynamic balance adjusting method

A model test and test bench technology, which is applied in static/dynamic balance test, aerodynamic test, machine/structural component test, etc., can solve the problems of unable to adjust the dynamic balance of the test bench, unable to adjust the dynamic balance, etc., to achieve The effect of reducing test risk and improving test efficiency

Active Publication Date: 2017-05-31
CHINA HELICOPTER RES & DEV INST
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing technology is unable to adjust the dynamic balance of the test bench under the state of the wind tunnel test, that is, the dynamic balance adjustment cannot be performed during the test

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
  • Rotor model test stand dynamic balance adjusting method
  • Rotor model test stand dynamic balance adjusting method
  • Rotor model test stand dynamic balance adjusting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In order to make the objectives, technical solutions, and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present inv...

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 a rotor model test stand dynamic balance adjusting method. The rotor model test stand dynamic balance adjusting method comprises steps that step 1, a blade-less rotor test is carried out to acquire effective rotor test data; step 2, counterweights are added at a support arm of any rotor for multiple times; step 3, counterweights are added at a support arm of another rotor besides the support arm of the any rotor added with the counterweights in the step 2, and a rotor test is carried out to acquire rotor test data of the present rotor test; step 4, whether phase difference of the support arm of the rotor in the step 2 and the support arm of the rotor in the step 3 and an absolute value of difference of average data values of the step 2 and the rotor test data of the step 3 are in a threshold scope is determined; and step 6, a rotor balance fundamental frequency restriction value AmxL of the step 5 is taken as a largest threshold to carry out a blade rotor test; whether fundamental frequency of a rotor balance surpasses the rotor balance fundamental frequency restriction value in the blade rotor test process is monitored.

Description

Technical field [0001] The invention relates to the technical field of helicopter model rotor testing, in particular to a method for adjusting the dynamic balance of a rotor model test bench. Background technique [0002] The dynamic balance adjustment of the model test bench is the work that must be carried out before the model rotor test. Only when the dynamic balance of the test bench is adjusted to an ideal state, can subsequent tests be carried out. [0003] In the prior art, the dynamic balance of the model test bench is adjusted by means of vibration. However, in the wind tunnel test of the model rotor, especially after the fuselage and the propeller fairing are installed, the acceleration sensor cannot be directly installed on the propeller shaft. [0004] The fundamental frequency of the rotor balance test data and the vibration of the test bench has a close linear correlation, so the fundamental frequency load data of the rotor balance can be used to adjust the dynamic bala...

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): G01M9/02G01M1/38
CPCG01M1/00G01M9/02
Inventor 刘正江陈焕黄建萍邓建军
Owner CHINA HELICOPTER RES & DEV INST
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