A gravity unloading method and device for ground debugging of eccentric rotating space loads

Abstract

In the gravity unloading method and device for ground debugging of eccentric rotating space loads provided by the present invention, the gravity unloading shaft system lifts the load to be measured through a sling, balances the weight of the load to be measured through a counterweight, and places the load to be measured on the vertical axis of the load to be measured When the eccentric rotating part of the load to be measured moves around the second rotation axis of the vertical shaft system of the load to be measured, the gravity unloading shaft system and the vertical shaft system of the load to be measured will simultaneously produce rotational motion. The unloading shaft system is driven by the same motor signal, so the gravity unloading shaft system has the same rotational angular velocity as the moving part of the load to be measured, realizing the gravity unloading during the working process of the load to be measured.

Description

technical field [0001] The invention relates to the field of space equipment ground test space microgravity simulation technology, and in particular designs a gravity unloading method and device for ground debugging of eccentric rotating space loads. Background technique [0002] Due to the huge cost of space projects, in order to ensure the normal operation of various equipment after lift-off and meet the required performance indicators, a large number of ground tests are generally carried out on the ground before the launch of the space vehicle, and the simulation of the space microgravity environment It is a problem that must be solved for ground commissioning, that is, to unload the load by gravity during the ground commissioning process. [0003] The gravity unloading methods currently used mainly include drop tower method, parabolic flight method, water flotation method, air flotation method and suspension method. The free-fall movement is performed in the tower, whic...

AI Technical Summary

Problems solved by technology

For the space equipment that needs to move in the ground test, the currently used suspension method microgravity simulation equipment adopts passive control mode, uses flexible cables to suspend, moves with the equipment, and the bearings supporting the follow-up mechanism have large movement friction. The hysteresis movement instead becomes the resistance to the movement of space equipment, which seriously affects the test accuracy

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