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Measurement device for aerodynamic force of attitude control motor plume on large-sized solar cell wing

A technology for solar cells and measuring devices, which is applied to measuring devices, aerodynamic tests, and testing of machine/structural components, etc., can solve the problems of difficulty in estimating integral errors and unavoidable systematic errors, and achieve the effect of high measurement accuracy.

Inactive Publication Date: 2011-01-05
BEIHANG UNIV
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Problems solved by technology

Since the error of the measurement itself at each point will accumulate to the total aerodynamic force or moment, and the integral error caused by the simplification of the structure is difficult to estimate, the systematic error of the aerodynamic force measurement of the attitude control engine hitting the solar cell wing by this method is unavoidable

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  • Measurement device for aerodynamic force of attitude control motor plume on large-sized solar cell wing
  • Measurement device for aerodynamic force of attitude control motor plume on large-sized solar cell wing
  • Measurement device for aerodynamic force of attitude control motor plume on large-sized solar cell wing

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing.

[0013] The large-scale solar cell wing (6) is vertically installed in the ground test chamber, so that the central axis of the large-scale solar cell wing is consistent with the direction of gravity, and its axis is also consistent with the direction of gravity when the attitude control engine (5) is installed, and the attitude control engine (5) The attitude control engine support (4) is fixed on the test cabin, and the upper and lower parts of the central axis of the large solar cell wing are equipped with a pivot (2, 11), and the upper pivot (2) passes through the upper pivot support (1 ) is fixed on the test cabin, the lower pivot (11) is connected with the first displacement sensor (10) through the lower pivot bracket (12), the first displacement sensor is connected with the chassis (7), the chassis is fixed on the test cabin, and the chassis There are two load-bearing...

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Abstract

The invention aims to provide a test device for measuring an aerodynamic force of attitude control motor plume impacting a large-sized solar cell wing. The influence of gravity on small equivalent aerodynamic force measurement is overcome by using an adjustable spring mechanism, the numerical value magnitude of the aerodynamic force is indirectly measured by using a pole pitch variable displacement sensor, and in-situ calibration is performed on a measurement system by adopting a high-precision electromagnetic force calibration device. When the aerodynamic forces of different directions are calibrated, the system error introduced by the measurement device of the other direction is calibrated in the respective calibration process, the measurement errors of the test system are totally eliminated in the calibration process, and the measurement errors are only errors of the displacement sensor and a calibration thruster.

Description

【Technical field】 [0001] The invention relates to a measuring device for measuring the aerodynamic force of an attitude control engine plume hitting a large solar battery wing under high vacuum conditions, and belongs to the technical field of spacecraft environment simulation test technology and attitude control engine plume aerodynamic effect test measurement technology. 【Background technique】 [0002] Satellites, spaceships, space stations and other spacecraft have many engines used to adjust the attitude of the spacecraft. The jets of these attitude control engines will expand rapidly under vacuum conditions to form vacuum plumes, and the vacuum plumes hit the large-scale spacers of the spacecraft. A plume aerodynamic effect is created on the solar cell wings. Due to the large number of solar battery wings on the spacecraft, it is impossible to install all of them at the center of mass of the spacecraft, and it is impossible to arrange them completely symmetrically, and ...

Claims

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Application Information

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IPC IPC(8): G01M9/06
Inventor 蔡国飙王文龙贺碧蛟
Owner BEIHANG UNIV
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