Spacecraft three-dimensional zero-gravity simulator based on two-stage air flotation

Abstract

The invention provides a three-dimensional zero-gravity simulation device of a spacecraft based on two-stage air flotation, which comprises a foundation platform, a first-stage follow-up platform is arranged on the foundation platform, the first-stage follower platform comprising a platform base, an active follower mechanism arranged at the bottom of the platform base, and a vertical zero-gravityunloading mechanism arranged vertically at the top of the platform base; A top plate is arranged at the top of the vertical zero-gravity unloading mechanism, and a second-stage air floating platform for installing a manipulator arm is arranged on the top plate; the second-stage air floatation platform including air cushion, and air floatation components arranged on the air cushion. The invention solves the problem that the zero-gravity simulation of the existing manipulator or the space mechanism can only realize the two-dimensional simulation in the plane, and the added mass is large at the same time. A 6-DOF three-dimensional zero-gravity simulation of a space manipulator or a space mechanism can be realized, and at that same time, the added mass of the introduction system can be greatlyreduced, so that the device can meet the ground test requirements.

Description

technical field [0001] The invention belongs to the field of zero-gravity simulation test devices, and in particular relates to a three-dimensional zero-gravity simulation device for spacecraft based on two-stage air flotation. Background technique [0002] The zero-gravity simulation test of the spacecraft is an indispensable test link to ensure the performance and reliability of the spacecraft, and its role is very important. With the rapid development of the aerospace industry, especially the advancement of projects such as on-orbit service and maintenance, and deep space exploration, in future aerospace missions, space manipulators and various types of mechanisms are key equipment for completing related space tasks. Accurate zero-gravity simulation tests are the top priority in the spacecraft development process. [0003] The zero-gravity test of the existing mechanical arm or space mechanism is usually unloaded by gravity through the plane support at the bottom, which ...

AI Technical Summary

Problems solved by technology

[0003] The zero-gravity test of the existing mechanical arm or space mechanism is usually unloaded by gravity through the plane support at the bottom, which can only realize the zero-gravity simulation in the plane. When using the existing device for the experiment, the device can only be carried out in the plane on the basic platform. Two-dimensional movement cannot realize zero-gravity simulation of vertical direction and three-axis rotation, so the manipulator can only do zero-gravity simulation in a two-dimensional plane, but zero gravity in space is actually three-dimensional, so the authenticity of the experiment It is seriously affected; and the existing device is faced with many problems such as excessive additional mass and large ground disturbance torque in the actual test, which seriously affects the overall test accuracy; due to the solid connection between the simulation device and the spacecraft, and due to the quality of the simulation device itself Larger, it introduces a larger additional mass to the body, and has a greater impact on the dynamics of the spacecraft

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