Abstract
During the launch and return of a spacecraft, the intense combustion of propellants generates strong electromagnetic radiation, which interferes with the operation of electronic equipment in the spacecraft. To improve the electromagnetic compatibility of electronic equipment in spacecraft, it is necessary to study the electromagnetic radiation characteristics of rocket fuel. An electromagnetic radiation measurement system based on antennas is designed to measure the electromagnetic radiation generated by rocket fuel, and the electromagnetic radiation characteristics are obtained through data analysis. The mechanism of the electromagnetic radiation generated by rocket fuel is comprehensively analysed through the spatial, time-domain, frequency-domain, and energy-domain characteristics. A characterization model is established to provide a reliable scheme for evaluating the influence of rocket fuel electromagnetic radiation on electronic equipment in spacecraft.
Highlights
On 30 May 2020, SpaceX successfully launched the Falcon 9 Rocket “Crew Dragon”from the Kennedy Space Center in Florida, and two NASA astronauts were sent into space, which is the first time in human history that a commercial company completed a manned spaceflight mission
Affecting the live video signal is not enough to have a large adverse effect, but the heat generated by violent combustion can cause the plasma state around the spacecraft to change so that the electromagnetic radiation generated by deflagration can adversely affect electronic equipment in spacecraft, especially communication equipment [3,4]
During the launch and return of a spacecraft, strong electromagnetic radiation generated by aerospace fuel deflagration and atmospheric friction can interfere with electronic equipment on the spacecraft, blocking the communication connection between the spacecraft and ground and threatening the safety of astronauts
Summary
On 30 May 2020, SpaceX successfully launched the Falcon 9 Rocket “Crew Dragon”from the Kennedy Space Center in Florida, and two NASA astronauts were sent into space, which is the first time in human history that a commercial company completed a manned spaceflight mission. It was noticed that the broadcast was interrupted for a few seconds when the rocket approached the recovery ship and was about to land. Most live broadcasts of first-stage rocket recoveries are temporarily interrupted during rocket landings at sea. When a rocket approaches a recovery ship at sea, the rocket fuel burns to produce intense electromagnetic radiation, which causes electromagnetic interference with wireless communication so that live broadcast signal interruption always occurs during the process of first-stage rocket recovery at sea. Affecting the live video signal is not enough to have a large adverse effect, but the heat generated by violent combustion can cause the plasma state around the spacecraft to change so that the electromagnetic radiation generated by deflagration can adversely affect electronic equipment in spacecraft, especially communication equipment [3,4]
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