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Method for testing ground surface heat of complex space mechanism

A technology of ground thermal test and ground test, which is applied in the testing of machine/structural components, measuring devices, instruments, etc., and can solve problems such as limited simulation conditions

Active Publication Date: 2014-06-25
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

[0006] Aiming at the limited ground simulation conditions at present, the present invention proposes a ground thermal test method for complex space mechanisms in the absence of large-scale solar simulators and the introduction of ground test tooling (assisting the action of large complex space mechanisms). The combination of analysis calculation and thermal test has realized the verification work of large complex space mechanism construction ground thermal test

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  • Method for testing ground surface heat of complex space mechanism

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] The first step: Paste a heating sheet for simulating external heat flow on the heat dissipation surface 3 of the complex space mechanism controller 2 and camera 4, and then spray an alternative coating with the same emissivity as the heat dissipation surface coating on the heating sheet; In the test, it is necessary to simulate the heat flow outside the orbit; the current test conditions are limited, and the electric heater is used to simulate the heat flow outside the orbit; and different from the external heat flow simulation of the general ground thermal test, the electric heater only simulates the complex large-scale The external heat flow of the cooling surface of the space mechanism is not simulated for the external heat flow of the other surfaces;

[0022] Step 2: Carry out thermal control design for the ground test tooling, and set a heating circuit on t...

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Abstract

The invention relates to a method for testing ground surface heat of a complex space mechanism, belonging to the technical field of the heat control of a spacecraft. The method comprises the following steps: adhering heating pieces for simulating external heat flow to radiating surfaces of a controller and a camera of the complex space mechanism, spraying a substitute coating which has the same emission rate as the coating of the radiating surfaces onto the heating pieces, carrying out the heat control test to a ground surface testing tool, establishing a test model of the complex space mechanism which is integrated with the ground surface testing tool in a space simulator, analyzing and calculating the heat of various working conditions during testing, carrying out the heat control to the complex space mechanism provided with the ground surface testing tool to test the ground surface heat balance of the complex space mechanism, correcting a heat analyzing and calculating model for testing the ground surface heat of the complex space mechanism according to test data, correcting an ontrack flying model of the complex space mechanism by using the corrected model for testing, and preestimating the ontrack flying temperature of the complex space structure. The method is used for testing the ground surface heat of the large-scale complex space mechanism.

Description

technical field [0001] The invention belongs to the technical field of spacecraft thermal control, and relates to a ground thermal test method for a large complex space mechanism. Background technique [0002] With the development of aerospace technology, complex and large-scale space mechanisms have begun to be used on spacecraft. Large-scale and complex space rotating mechanisms are in motion on orbit, and their attitudes on orbit are changeable, and the external heat flow is also complex and changeable. The environmental conditions faced by orbit extremely bad. In view of the limitations of the current method of simulating external heat flow in ground thermal tests and the complexity of the structure of space mechanisms, the ground thermal test verification of complex large-scale space mechanisms has also become a difficult problem. [0003] The complex large-scale space mechanism requires action in the ground thermal test. In order to eliminate the influence of ground g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
Inventor 任红艳赵欣
Owner BEIJING INST OF SPACECRAFT SYST ENG
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