A general test method for thermal insulation performance of parachute devices in packaged state

A general-purpose testing and parachute technology, applied in measuring devices, testing of machine/structural components, instruments, etc., which can solve the problem of short re-entry aerodynamic heating time, less prominent thermal insulation problems, and short spacecraft ballistic re-entry flight time and other problems, to achieve the effect of simple method, high versatility, and correct measurement of temperature change

Active Publication Date: 2017-04-19
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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  • Abstract
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Problems solved by technology

[0002] The traditional spacecraft ballistic reentry flight time is short, the corresponding reentry aerodynamic heating time is not long, and the heat insulation problem is not very prominent. Therefore, the experimental research on the heat insulation performance of the parachute device is almost blank

Method used

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  • A general test method for thermal insulation performance of parachute devices in packaged state
  • A general test method for thermal insulation performance of parachute devices in packaged state
  • A general test method for thermal insulation performance of parachute devices in packaged state

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specific Embodiment

[0045] (1) In the present embodiment, the size of the elliptical cylindrical umbrella bag is: the length of the major axis is 350mm, the length of the minor axis is 220mm, and the height is 210mm. The size of the cylindrical umbrella bag is: the diameter of the bottom is ф150mm, and the height is 180mm.

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Abstract

The invention provides a general test method for the heat-insulating property of a packaged parachute device. According to the method, multiple sets of thermocouples are placed at pointed positions in a parachute when the parachute device is packaged, then the packaged parachute device is placed in a temperature and humidity chamber to be quickly heated according to requirements, after the packaged parachute device reaches a target temperature and the target temperature is maintained for a period, the temperature values of all the temperature measuring thermocouples are recorded in the whole heating and temperature maintaining test process, and the temperature raising characteristics of all the portions of the packaged parachute device are estimated according to the temperature values. The test method is simple, effective, general, and suitable for the parachute device in various packaging forms, and meets the requirement for general tests of the heat insulating property of the packaged parachute device to the largest extent.

Description

technical field [0001] The invention relates to a general test method for heat insulation performance, in particular to a general test method for heat insulation performance of a parachute device in a packaged state, belonging to the technical field of parachutes for spacecraft. Background technique [0002] The traditional spacecraft ballistic reentry flight time is short, the corresponding reentry aerodynamic heating time is not long, and the heat insulation problem is not very prominent. Therefore, the experimental research on the heat insulation performance of the parachute device is almost blank. [0003] In recent years, with the improvement of the re-entry flight speed of spacecraft, for example, the return vehicle of the Chang’e spacecraft in the third phase of the lunar exploration adopts a double-jump re-entry method close to the second cosmic speed to return, the re-entry aerodynamic heating time is longer, and the total heat is very large , the requirements for t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
Inventor 张宇蒋伟甘和麟杜坤明
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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