Ground simulation test device for space vehicle

Abstract

The invention relates to a test device, in particular to a ground simulation test device for space vehicle. The test device is characterized in that a driving mechanism is arranged above a support platform 1 and a space vehicle simulation mechanism is arranged below the support platform 1. One end of a flexible rope 13 is connected with the driving mechanism, and the other end is connected with a space vehicle simulator 21 by a three-axle table. One end of the flexible rope is fixedly connected with an upper trolley 3 on the support platform 1 at a flexible rope fixed point 2, and the other end of the flexible rope 13 is connected with a three-axle table inner shaft 15. A suspension corner formed by rotating motion of the space vehicle is eliminated, so as to cause suspension to be closed to an angle equilibrium position all the time, thus reducing suspension torsion stress; and meanwhile the method also can eliminate that suspension deviates a gravitational equilibrium position caused by translation motion of the space vehicle, so as to cause the suspension to be closed to the gravitational equilibrium position all the time, thus reducing suspension restoring force and ensuring disturbing force of the space vehicle simulator to be minimum.

Description

Technical field: [0001] The invention relates to a test device, in particular to a space vehicle ground simulation test device. Background technique: [0002] During ground simulation tests of spacecraft, measures need to be taken to make the simulated spacecraft overcome gravity in whole or in part without introducing other disturbance forces. The more commonly used measures to overcome gravity include liquid flotation, air flotation and suspension. The suspension method is to use flexible (bendable, elastic) cables to hang the simulated space vehicle, so that the simulated space vehicle can move within a certain range, and the motion includes rotation and translation. In the current suspension method, the two ends of the suspension cable are respectively directly fixed on the simulated space vehicle and the supporting platform. For such a suspension method, because the rotational movement of the simulated spacecraft will form a turning angle to make the suspension deviat...

AI Technical Summary

Problems solved by technology

Due to the translational movement of the simulated spacecraft, the suspension will deviate from the gravity balance position, and the suspension will have a suspension restoring force when the suspension deviates from the gravity balance position. This suspension restoring force acts on the simulated spacecraft, which will interfere with the accurate simulation of the simulated spacecraft.

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