Astronauts need to spend 7 months observing the space station?, What kind of debris process | phenomenon | space station
Not long ago, good news came from the space station, and for the first time, China successfully observed the process and cluster phenomenon of conductive ring debris generation in orbit. Good news from the space station again! For the first time in orbit, China has observed the generation process and clustering phenomenon of conductive ring debris. After seeing it, everyone expressed, "What kind of debris does it take astronauts to observe for so long?" "Teacher, please attend class quickly!" This is the answer! Let's learn more together through the following quick questions and answers!
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Why is this experiment being conducted?
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In order to prevent the failure of the solar panel drive mechanism and control torque gyroscope on the spacecraft platform in orbit caused by short circuits and open circuits in the conductive ring, resulting in the failure of the spacecraft's energy and control system. To further understand the motion law and mechanism of debris generated by the long-term operation of the conductive ring under the combined action of vacuum, weight loss, and electromagnetic field, relevant experimental work was carried out using the platform of the space station.
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What is the specific location of the conductive ring debris test device in the aerospace basic test cabinet?
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Taking a disc-shaped conductive ring as an example, what are the purposes of each part?
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The basic principle of debris generation?
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Using a turntable to drive the conductive ring sample for rotation, friction between the conductive ring body and the brush block generates debris. The conductive ring can flow through a given voltage and current, and the debris undergoes clustering, growth, or movement under the combined action of vacuum, weight loss, and electromagnetic fields.
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What kind of results are expected to be achieved through this experiment?
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The expected results include:
① Observing the generation of debris;
② Observing clusters, growth, or migration movements of debris;
③ Detect short or open circuit faults in the conductive ring and compare them with other spacecraft in orbit faults.
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How to conduct the experiment?
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In the initial stage of the experiment, the motion state of SADA and CMG in orbit was fully simulated, and the experimental conditions were planned and updated in real-time based on the in orbit phenomenon.
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What materials of debris have been obtained and have they already been removed?
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Wear debris was observed in all four sub samples, including gold alloy and silver alloy. At present, the sub samples and debris are still in the testing process and have not been taken down yet.
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Why do we need to conduct experiments using disc type conductive rings and column type conductive rings separately? What do stacked and sealed refer to?
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The problem of spacecraft SADA in orbit often occurs in power conductive rings, namely disk conductive rings; CMG in orbit issues often occur with cylindrical conductive rings, so this experiment includes both disc and cylindrical conductive rings. Stacked and sealed refer to the production process of conductive rings.
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What are the differences in the experimental results conducted using disc type conductive rings and column type conductive rings?
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The experimental results are judged based on the characteristics of each sub sample, without making any special distinctions.
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What insights did the results of this experiment provide for the future?
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Through in orbit experiments, the distribution status of various conductive ring debris in orbit has been determined, which is beneficial for the improvement design of subsequent conductive rings, avoiding short circuits and open circuits, improving the service life of space electromechanical products, and ensuring the safety of spacecraft platforms.
