"Russian scientists are developing a 'space charging station'". Russia ’s “News†disclosed on the 6th that scientists at the Russian Mozhaysk Military Space Academy said they are planning to create a satellite group to wirelessly charge spacecraft in Earth orbit, thereby extending the life of the satellite by 1.5 times and saving Huge amount of money.
According to reports, the "Space Gas Station" project was originally intended to ensure that the satellites and radio communication equipment of the global satellite search and rescue system can operate smoothly for a long time. According to the developer's vision, a satellite group consisting of dozens of "charging robots" will be deployed in orbit. This satellite is shaped like an alien flying saucer, with solar panels and photovoltaic modules in the upper and lower hemispheres. Dmitry Kargu, an expert at the Russian Military Space Academy, said: "Our vision is to increase the power supply of satellites located in the shadow of the earth. In the past, satellites located in this area were not exposed to sunlight, so there will be insufficient power to complete the reservation. The situation of the mission. The use of the 'charging robot', through the laser wireless charging equipment, can continue to provide 100 watts of additional power to the satellite. "He said that the main technical obstacles of the previous project were the loss of photoelectric conversion efficiency and power transmission. The satellite The resulting electricity is only 10% of the original. Today, thanks to infrared lasers and high-efficiency gallium arsenide-based photovoltaic modules, energy transmission efficiency can be increased to more than 70%.
At present, the Russian "power" group company, NASA and SpaceX are developing "space charging station". Anatoly Kopik, the marketing director of Sputniks, which develops small spacecraft in Russia, said that the development of an inter-satellite laser communication system for transmitting large amounts of information and power is a very promising project. He said that according to the existing assessment, it takes about 50,000 US dollars to put a 1 kg payload into orbit, which is equivalent to the cost of building a 1 kg satellite itself. A small spacecraft weighs 100-500 kg, and the cost of sending it into space can be up to 25 million US dollars. Such small satellites usually have a service period of 5-7 years. If they can be externally charged to reduce the fuel consumption carried by the satellites and thereby extend their effective working time in orbit, they can obviously save huge amounts of money.
Experts from the Russian Military Space Academy said that in addition to extending the life of the satellite, the project can also change the design concept of the spacecraft. For example, if there is a charging station on the orbit, then the length of the solar panel of the spacecraft can be reduced from several meters to 1 meter, and the extra panel can be eliminated. This will reduce the weight of the spacecraft and make room for other equipment. (Liu Yupeng)
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