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A method for monitoring the impact of space debris on the airtight cabin of a special-shaped spacecraft

A technology for space debris and spacecraft, which is applied to space navigation vehicles, instruments, aircraft, etc., can solve the problems that cannot meet the impact monitoring requirements of spacecraft special-shaped structures, and achieve the effect of high impact positioning accuracy

Active Publication Date: 2021-07-13
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

[0004] At present, the impact monitoring methods based on acoustic emission technology at home and abroad are only suitable for simple engineering structures, such as flat plate structures or cylindrical shell structures, and cannot meet the needs of real spacecraft with special-shaped structures (non-uniform wall thickness, hatches or portholes, and outer envelopes of Combination of cone, sphere or cylinder) impact monitoring requirements

Method used

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  • A method for monitoring the impact of space debris on the airtight cabin of a special-shaped spacecraft
  • A method for monitoring the impact of space debris on the airtight cabin of a special-shaped spacecraft
  • A method for monitoring the impact of space debris on the airtight cabin of a special-shaped spacecraft

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Embodiment

[0045] Such as figure 1 As shown, it is a block diagram of the composition principle of the positioning system of the present invention. The special-shaped spacecraft airtight cabin of the present invention mainly includes a surface ultrasonic sensor 1, a data transmission line 2, a charge amplifier 3 and a data processing unit 4, and 5 in the figure is a spacecraft airtight cabin. The ultrasonic sensor 1 is fixed on the inner surface of the spacecraft airtight compartment 5 by glueing, and a plurality of ultrasonic sensors 1 form a sensor array (for example, the distance between any nearest neighbor sensor is less than 3m), and are connected to the charge amplifier 3 through the data transmission line 2, and the charge amplifier 3 It is connected with the data processing unit 4 through the data transmission line 2.

[0046] The airtight cabin is composed of 4 cabin sections, which are spherical section, front cone section, column section and rear cone section. There are quad...

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Abstract

A method for monitoring the impact of space debris on the airtight cabin of a special-shaped spacecraft, using the acoustic emission signal generated by the impact of space debris on the airtight cabin and the air pressure drop rate in the airtight cabin to sense and locate the impact event and judge whether the airtight cabin is broken down by space debris , which can meet the on-orbit status monitoring requirements of the sealed cabin of the special-shaped spacecraft, and belongs to the field of spacecraft structural health monitoring. The present invention judges whether the impact is an ultra-high-speed impact event of space debris through the spectrum characteristics of the acoustic emission signal, determines the impact position through a sample-based area positioning algorithm, and determines whether the airtight cabin is broken down by space debris in combination with the air pressure drop rate in the sealed cabin. Thus, the three-level monitoring of the space debris impact event on the sealed cabin of the special-shaped spacecraft is realized.

Description

technical field [0001] The invention relates to a method for monitoring the impact of space debris on a sealed cabin of a special-shaped spacecraft, which uses the acoustic emission signal generated by the impact of space debris on the sealed cabin and the air pressure drop rate in the sealed cabin to sense and locate the impact event and whether the sealed cabin is broken down. Monitoring, which can meet the on-orbit status monitoring requirements of special-shaped structures in spacecraft airtight cabins, belongs to the field of spacecraft structural health monitoring. Background technique [0002] With the continuous development of human spaceflight activities, the space debris environment continues to deteriorate, which poses a great threat to the safety of long-life manned spacecraft in orbit, and poses a threat to the life safety of astronauts in orbit. The demand for on-orbit status monitoring is increasingly urgent. [0003] The monitoring technologies for spacecraf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/66G01H17/00
CPCB64G1/66G01H17/00
Inventor 周浩王晓宇王磊庞宝君迟润强黎彪温楠施丽铭张琳常洁孙勇陈同祥程大义
Owner BEIJING INST OF SPACECRAFT SYST ENG
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