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

Continuous wind tunnel airfoil dynamic characteristics test mechanism

A technology of dynamic characteristics and airfoil, applied in the direction of aerodynamic test, machine/structural component test, measuring device, etc., can solve the problems of inaccurate airfoil dynamic motion control and complicated test equipment, so as to save precious time, Improve experimental efficiency and achieve precise selection effects

Inactive Publication Date: 2016-03-30
NORTHWESTERN POLYTECHNICAL UNIV
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, domestic airfoil dynamic characteristic experimental devices generally have problems such as inaccurate airfoil dynamic motion control and complicated test equipment.

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
  • Continuous wind tunnel airfoil dynamic characteristics test mechanism
  • Continuous wind tunnel airfoil dynamic characteristics test mechanism
  • Continuous wind tunnel airfoil dynamic characteristics test mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Describe the present invention below in conjunction with specific embodiment:

[0029] Such as figure 1 As shown, the continuous wind tunnel airfoil dynamic characteristic test mechanism in this embodiment includes a wind tunnel, a window turning mechanism, a driving device, a crank device, a connecting rod, and a model support oscillation device.

[0030] The driving device provides the original power for the movement mechanism, including the motor and its support, the reducer, the rotating shaft and its support, etc., such as figure 2 shown. The large gear is installed on the rotating shaft; the small gear is installed on the motor shaft. The power of the motor is 2.5Kw and the speed is 3000 rpm. The motor drives the small gear to rotate. After gear transmission and deceleration, the torque of the large gear increases. Ensuring sufficient power output. After gear reduction, the oscillation frequency of the mechanism can still reach about 33Hz, which can meet the c...

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 continuous wind tunnel wing type dynamic characteristic testing mechanism which comprises a wind tunnel, a pivot window mechanism, a driving device, a crank device, a connecting rod and a model supporting oscillation device. The continuous wind tunnel wing type dynamic characteristic test is realized through the driving device, the crank device, the connecting rod and the model supporting oscillation device; wing-type dynamic motion range adjustment is realized by adjusting the position of a slide block along an axis of a sliding rod in the crank device and adjusting the length of two sections of rod in the connecting rod; an oscillating shaft flange plate and an average incidence angle flange plate are matched through different pin holes, an initial angle of the wing type is accurately selected; according to the special pivot window mechanism, pivot window parts needing to be detached due to model change in the traditional pivot window structure are optimized, for example, the window does not need to be detached after one-step installation, so that the condition that the model needs to be recalibrated due to one-step detachment is effectively avoided, lots of precious time is saved for preparatory work of the wing-type test, and the experimental efficiency is effectively improved.

Description

technical field [0001] The invention belongs to the field of aerospace wind tunnel test equipment, in particular to a continuous wind tunnel airfoil dynamic characteristic test mechanism. Background technique [0002] Helicopters are widely used in civil and military fields. The dynamic characteristics of the helicopter rotor are closely related to the dynamic characteristics of the airfoil used. The dynamic characteristics of the airfoil have an important effect on the aerodynamic load of the rotor, the handling characteristics, the life of the rotor moving parts, and even the performance of the helicopter. influences. When the helicopter is flying forward, the rotation speed is superimposed on the forward flight speed, and the forward blade may experience transonic shock wave stall, and the backward blade may experience high angle of attack dynamic stall and airflow separation. Therefore, to provide a reliable design basis for rotor design, it is necessary to carry out in...

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): G01M9/02G01M9/04
Inventor 李方吉王莹郗忠祥吕哲李峰盛强李征
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