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High-precision device for measuring rolling moment based on mechanical bearing support

A technology for bearing support and torque measurement, which is applied in the direction of measuring devices, machine/structural component testing, aerodynamic testing, etc., can solve the problems of high test cost and long test time, and achieve reduced interference, low development cost, and good performance. Rigid effect

Active Publication Date: 2013-01-23
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The measurement accuracy of this method is very high, but in order to obtain the time history of the free rolling of the model, the test time required is very long and the test cost is very high

Method used

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  • High-precision device for measuring rolling moment based on mechanical bearing support
  • High-precision device for measuring rolling moment based on mechanical bearing support
  • High-precision device for measuring rolling moment based on mechanical bearing support

Examples

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Embodiment Construction

[0026] The present invention will be further introduced below in conjunction with the accompanying drawings.

[0027] Such as figure 1 As shown, the high-precision rolling moment measurement device based on the mechanical bearing support of the present invention includes a mechanical bearing support 100 and a single-component rolling moment balance 200 . During the test, the front end of the housing assembly 101 of the mechanical bearing support 100 is fixed to the measured wind tunnel model 300 . The rear end of the central axis assembly 103 of the mechanical bearing support 100 is fixed to the model strut 400, and the device and the measured wind tunnel model 300 are fixed together in the wind tunnel. Among them, the mechanical bearing support 100 is used to bear all radial loads and axial loads, and overcome the influence of these loads on the rolling moment measurement. The single-component rolling moment balance 200 is used to measure the rolling moment, and has suffici...

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Abstract

The invention discloses a high-precision device for measuring a rolling moment based on a mechanical bearing support, which is lower in researching and testing costs, higher in precision as comparison with the conversional high-precision rolling moment strain gauge balance and capable of meeting the requirement for small rolling moment wind channel measurement of a wind channel model in various attack angle states. The high-precision device comprises a simple component rolling moment balance (200) and a mechanical bearing support (100), wherein the mechanical bearing support (100) comprises a shell assembly (101), a rotary inner sleeve assembly (102) and a central shaft assembly (103); the rotary inner sleeve assembly (102) is arranged inside the shell assembly (101) by using an outer ring bearing and arranged on the central shaft assembly (103) by using an inner ring bearing; the front end of the shell assembly (101) is fixedly provided with a measured wind channel model (300); and the central shaft assembly (103) is provided with the simple component rolling moment balance (200) and fixed on a model supporting rod (400).

Description

technical field [0001] The invention belongs to the technical field of wind tunnel balances, and relates to a high-precision rolling moment measurement device supported by mechanical bearings. Background technique [0002] The small rolling moment test technology has a wide and urgent demand in the wind tunnel test of aircraft. Some missiles will cause small rolling moments due to the external cable cover, the appearance of asymmetric vortex at high angle of attack, small asymmetric warhead and ablation shape. How to accurately measure the rolling moment is very important to provide a basis for the design of the missile's rolling control. Improper handling may cause the rolling moment to cause a decrease in the accuracy of the landing point or even damage the missile. [0003] At present, the small rolling moment measurement techniques mainly include: ① use strain balance to directly measure the rolling moment of the model; ② use gas bearing and liquid bearing support to ob...

Claims

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Application Information

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IPC IPC(8): G01M9/06
Inventor 张尚彬秦永明袁雄
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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