Balance calibration loading sleeve

A technology for balance calibration and loading sleeves, which is applied in the direction of measuring devices, instruments, aerodynamic tests, etc., can solve problems such as pitching moment interference, and achieve accurate and firm positioning

Pending Publication Date: 2018-08-03
中国空气动力研究与发展中心超高速空气动力研究所
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  • Abstract
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  • Claims
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Problems solved by technology

Moreover, during single-component calibration, such as normal force calibration, when the loading p

Method used

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  • Balance calibration loading sleeve
  • Balance calibration loading sleeve
  • Balance calibration loading sleeve

Examples

Experimental program
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Embodiment 1

[0031] When calibrating the piezoelectric balance, first install the piezoelectric balance horizontally on the calibration frame, then install the main body 1 of the loading sleeve on the bearing cone at the front end of the piezoelectric balance through the connecting cone section in the middle, and pass the upper beam of the main body 1 of the loading sleeve The reference plane 11 on the top measures the deflection angle of the installation of the balance calibration loading sleeve, and the loading sleeve main body 1 is fixed after the deflection angle is adjusted to an allowable angle. According to the loading point position determined by the loading table, loosen the compression nut 6, adjust the slider 3 to the corresponding position on the main body 1 of the loading sleeve, and tighten the compression nut 6 to determine the first loading position, the loading line Hang the weights through the holes on the loading pegs 5. Through the cooperative use of the scale on the ma...

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Abstract

The invention discloses a balance calibration loading sleeve. In modes of pin positioning and threaded pressing, a loading nail of the balance calibration loading sleeve disclosed by the invention isfixed on a sliding block, then the position of a loading point can be relatively precise and solid, and through continuous movement of the sliding block in a chute, continuous adjustment and continuous accurate positioning of the position of the balance calibration loading point can be achieved. By adopting the balance calibration loading sleeve disclosed by the invention, in unit calibration of anormal force and a lateral force, interference caused by relatively large additional pitch moments and yawing moments can be avoided; in multi-element calibration, the position of the loading point can be controlled, and the moments can be accurately adjusted according to requirements of a loading table; and by using the balance calibration loading sleeve disclosed by the invention, the positionprecision of the balance calibration loading point can be improved to 0.05mm.

Description

technical field [0001] The invention belongs to the field of piezoelectric balance calibration loading devices, in particular to a balance calibration loading sleeve. Background technique [0002] The wind tunnel is the main equipment for testing the aerodynamic characteristics of various aircraft models. According to the operating characteristics of different wind tunnels, a suitable balance has been invented. The piezoelectric balance is a force-measuring test balance developed for the characteristics of short-time pulse operation in the shock tunnel, which meets the demand for measuring the aerodynamic force on the model in the millisecond-level test time of the shock tunnel. [0003] In order to accurately measure the aerodynamic load acting on the model in the wind tunnel test, the wind tunnel balance needs to be calibrated before the test to obtain the service coefficient of the balance. During the wind tunnel test, according to the output of the balance, it is obtaine...

Claims

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Application Information

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IPC IPC(8): G01M9/06
CPCG01M9/062
Inventor 吕治国赵荣娟黄军
Owner 中国空气动力研究与发展中心超高速空气动力研究所
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