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

A Pitch Dynamic Derivative Balance Protection Device

A technology of protection device and dynamic derivative, which is applied in the direction of measuring device, aerodynamic test, machine/structural component test, etc., can solve the problem that the structural strength cannot meet the requirements, and achieve the effect of small flow field interference and guaranteed accuracy

Active Publication Date: 2019-12-27
AVIC SHENYANG AERODYNAMICS RES INST
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem that the structural strength of the existing pitching dynamic derivative balance cannot meet the requirements in the high Mach number wind tunnel test, and provides a pitching dynamic derivative balance protection device to meet the requirements of the wind tunnel 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
  • A Pitch Dynamic Derivative Balance Protection Device
  • A Pitch Dynamic Derivative Balance Protection Device
  • A Pitch Dynamic Derivative Balance Protection Device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Such as Figure 1-3 As shown, a protection device for a pitching dynamic derivative balance, including a connecting cylinder 3, two sets of support linkage mechanisms, two sets of linear motion mechanisms and two sets of connecting pieces, the pitching dynamic derivative balance includes a motor strut 1, a pitching The dynamic derivative strut 2 and the dynamic derivative balance 9, the motor strut 1 is connected with the pitch dynamic derivative strut 2, the pitch dynamic derivative strut 2 is connected with the tail of the dynamic derivative balance 9, the inside of the front end of the model 8 is connected with the dynamic derivative balance 9 The front cone of the model 8 is fixedly connected, the tail of the model 8 is set on the outside of the pitching dynamic derivative strut 2, and two groups of linear motion mechanisms are symmetrically installed on both sides of the motor strut 1, and the linear motion mechanisms are screw pairs 12 , the lead screw is driven b...

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 relates to a protection device for a pitching dynamic derivative balance. The protection device is composed of a connecting cylinder, two groups of supporting connecting rod mechanisms,two groups of linear motion mechanisms and two groups of connecting members. The two groups of linear motion mechanisms are symmetrically installed at the two sides of a motor fulcrum bar; and motionunits of the two groups of linear motion mechanisms are connected with two sides of one end of the connecting cylinder by the connecting members. The connecting cylinder sleeves a pitching dynamic derivative fulcrum bar; and the two sides of the other end of the connecting cylinder are fixedly connected with the pitching dynamic derivative fulcrum bar by the supporting connecting rod mechanisms. When a wind tunnel is opened or closed, the linear motion mechanisms drive the supporting connecting rod mechanisms to be lifted so as to support the inner cavity of the tail of a model; and thus the tail of the model is integrated with the pitching dynamic derivative fulcrum bar. According to the invention, the balance can be protected during the wind tunnel testing process. The protection deviceshas little impact on the flow field of the tail of the model, so that the high precision of the dynamic derivative testing is ensured.

Description

Technical field: [0001] The invention belongs to the technical field of aeronautical aerodynamic experiment structures, and in particular relates to a protective device for a pitch dynamic derivative balance. Background technique [0002] The dynamic stability derivative is referred to as the dynamic derivative, which is the six aerodynamic coefficients of the aircraft (that is, the three force and three moment coefficients in the three-dimensional rectangular coordinate system) to the time change rate of the aircraft attitude parameters (p, q, r, a, b, dV / dt) derivative. Dynamic derivative is an indispensable original aerodynamic parameter in aircraft guidance system, control system and dynamic quality analysis. The dynamic derivative balance is a device for measuring the value of the dynamic derivative. With the increase of the Mach number of the wind tunnel test, the impact load on the start and shutdown of the wind tunnel test will increase accordingly. The structural ...

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): G01M9/04G01M9/06
CPCG01M9/04G01M9/062
Inventor 徐明潘金柱张杰才义
Owner AVIC SHENYANG AERODYNAMICS RES INST
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com