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

Wind tunnel virtual flight test balance aerodynamic force collecting and processing system

A flight test, aerodynamic technology, applied in the field of wind tunnel virtual flight test, can solve problems such as unresponsiveness

Pending Publication Date: 2022-06-03
中国航空工业集团公司哈尔滨空气动力研究所
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The linear displacement constraint of the three-degree-of-freedom virtual flight causes the results of the wind tunnel test to fail to reflect the results of the real flight. Therefore, a wind tunnel virtual flight test balance aerodynamic acquisition and processing system is needed to correct the linear displacement

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
  • Wind tunnel virtual flight test balance aerodynamic force collecting and processing system
  • Wind tunnel virtual flight test balance aerodynamic force collecting and processing system
  • Wind tunnel virtual flight test balance aerodynamic force collecting and processing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A wind tunnel virtual flight test balance aerodynamic acquisition and processing system, comprising a high-frequency force-measuring balance, a voltage signal acquisition module, a DSP data processing module, a remote computer and a flight control computer, and a high-frequency force-measuring balance and a voltage signal acquisition module for electrical signals Connection, the voltage signal acquisition module is connected with the DSP data processing module for electrical signals, the DSP data processing module is respectively connected with the remote computer and the flight control computer for electrical signals, the voltage signal acquisition module collects the voltage data of the 6-element balance, and passes the collected voltage data through low Through filter processing to eliminate high-frequency noise interference, the DSP data processing module obtains the original balance voltage data U X , U Y , U Z , U Mx , U My , U Mz , bring the filtered voltage ...

Embodiment 2

[0043] according to figure 1 As shown, the balance voltage signal is connected to the air plug interface of the voltage signal acquisition module system, the flight control computer is connected to the RS485 interface of the DSP data processing module, and the remote computer is connected to the Ethernet interface of the DSP data processing module. Power on the wind tunnel virtual flight test balance aerodynamic acquisition and processing system, start the remote computer host computer software, set the IP address, and confirm that the host computer software is connected with the wind tunnel virtual flight test balance aerodynamic acquisition and processing system; set the data sampling frequency and Low-pass filter frequency, among which the sampling frequency is adjustable from 10 to 2000Hz, and the low-pass filter frequency is adjustable from 2 to 100Hz. Generally, the sampling frequency is 1000Hz, and the low-pass filter frequency is 10Hz; according to the selected balance ...

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 provides a wind tunnel virtual flight test balance aerodynamic force acquisition and processing system, which corrects the linear displacement constraint problem of three-degree-of-freedom virtual flight, and comprises a high-frequency force measurement balance, a voltage signal acquisition module, a DSP (Digital Signal Processor) data processing module, a remote computer and a flight control computer, according to a balance static correction formula, balance coordinate system aerodynamic force data is obtained in a loop iteration mode, airplane model attitude data is obtained through a flight control computer, balance coordinate system data is converted into airplane coordinate system data according to a shaft system conversion formula, and the airplane coordinate system data is sent to the flight control computer. And the flight control computer performs linear displacement correction, so that a traditional wind tunnel virtual flight test can simulate six-degree-of-freedom atmosphere real flight.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel virtual flight test, in particular to an aerodynamic acquisition and processing system for a wind tunnel virtual flight test balance. Background technique [0002] During the virtual flight test of the wind tunnel, a three-degree-of-freedom rotation mechanism was used to support the dynamic similar scaled aircraft model, and the aircraft model freely rotates around the center of mass under the action of aerodynamic force. This constrained motion is similar to the real atmospheric flight with six degrees of freedom. There is a difference. The linear displacement constraint problem of the three-degree-of-freedom virtual flight results in that the results of the wind tunnel test cannot reflect the results of the real flight. Therefore, a balance aerodynamic acquisition and processing system for the virtual flight test of the wind tunnel is required to correct the linear displacement. SUMMARY OF...

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): G01M9/06G01M9/08
CPCG01M9/065G01M9/08Y02T90/00
Inventor 芦士光王建锋崔立冬王延灵沈彦杰
Owner 中国航空工业集团公司哈尔滨空气动力研究所
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