According to news media reports, the General Department of Magnetic Levitation and Electromagnetic Propulsion Technology of Aerospace Science and Industry Group Co., Ltd. was officially listed on June 20 18, which indicates that China's space field is stepping up its pace and accelerating the application of electromagnetic propulsion technology in space launch. As early as 20 16, aerospace science and industry group first disclosed in domestic professional magazines that the electric propulsion rocket launched by the large-scale electromagnetic ejection system on the ground was named "Feather Boat".

It is planned to complete the construction of electromagnetic launch demonstration system and the principle verification test in 2020.

Researcher Qing, Director of the General Department of Magnetic Levitation and Electromagnetic Propulsion Technology of China Aerospace Science and Industry Group, made a special report on "Application Research of Ultra-high Speed Magnetic Levitation and Electromagnetic Propulsion Technology in Space Launch and High Speed Flying Trains" at the domestic linear motor professional conference, and disclosed some details for the first time.

According to the public article published by researcher Qing, the maglev booster rocket can provide a large boost force for the single-stage launch vehicle, so that it can reach a high take-off speed in a short time, and then the rocket engine of the launch vehicle ignites, separates from the maglev booster launch system, and climbs into orbit. Supercharging system is characterized by large load, no friction and low energy consumption.

It can effectively reduce the consumption of propellant and greatly reduce the launch cost.

Superconducting magnetic levitation technology has obvious advantages in low-speed levitation ability, control system, cryogenic system technology, operating energy consumption and cost, and is suitable as the technical scheme of magnetic levitation system of launching device. As the best ground acceleration and deceleration mode, linear motor is very suitable as the power device of magnetic levitation launch system.

According to the idea, the long-distance electromagnetic force will be used to achieve continuous acceleration, and finally the take-off speed will reach 700 km/h to 2,400 km/h, and a limited load of 4 to 8 tons may be sent to the earth's low-earth orbit. After the technology is mature, the launch cost per kilogram will not exceed 2,000 to 3,500 yuan.

If this project can be realized, the cannonball conceived by French writer jules verne a hundred years ago may really come true. In his science fiction "From the Earth to the Moon", it is described that the human lunar module may launch a super cannon at the moon.

Compared with the first-stage rocket engine recovery technology of Space X Company in the United States, it can be launched quickly and repeatedly, with better economy and better meeting the needs of large-scale space development in the future. NASA has built a 2400-meter-long maglev launch track at Kennedy Space Center in Florida for vehicle design, propulsion system selection, maglev track analysis and cost budget research. ?

Major breakthroughs have been made in several key technical difficulties of China's magnetic levitation booster rocket launching technology. It is reported that the team of Academician Ma Weiming of Wuhan Naval University of Engineering has successfully completed the J-15 electromagnetic ejection take-off test, which may weigh dozens of tons.

The take-off speed of carrier-based aircraft is over 360 km/h by using linear motor with the length exceeding 100 m, which indicates that China has successfully broken through the high-power energy storage technology. The storage power of China's carrier-based aircraft ejection system is tens of megawatts. Because it is not limited by the site, it may be used to connect multiple energy storage devices on the aircraft carrier in parallel, and the power required for boosting is increased to hundreds of megawatts.

Compared with the first-stage rocket engine recovery technology of Space X Company in the United States, it can be launched quickly and repeatedly, with better economy and better meeting the needs of large-scale space development in the future. NASA has built a 2400-meter-long maglev launch track at Kennedy Space Center in Florida for vehicle design, propulsion system selection, maglev track analysis and cost budget research.

Major breakthroughs have been made in several key technical difficulties of China's magnetic levitation booster rocket launching technology. It is reported that the team of Academician Ma Weiming of Wuhan Naval University of Engineering has successfully completed the J-15 electromagnetic ejection take-off test, which may weigh dozens of tons, and realized the take-off speed of carrier aircraft above 360 km/h by using linear motors with a length exceeding 100 meters. ?

It indicates that China has successfully broken through the high-power energy storage technology. The storage power of the carrier-based ejection system of the Chinese aircraft carrier is tens of megawatts. Because it is not limited by the site, it may be used to connect multiple energy storage devices on the aircraft carrier in parallel, and the power required for boosting is increased to hundreds of megawatts.

The key is high-temperature superconducting magnetic levitation technology. Aerospace Science and Industry Group is likely to make a major breakthrough in this technology before it dares to develop ultra-high-speed magnetic levitation electromagnetic propulsion technology.

The new high-speed maglev rocket sled booster slide rail system designed by Boeing Company of the United States was made public in 20 14, and the test speed exceeded Mach 6.

According to information disclosure, with the development level of high temperature superconducting materials in China gradually improved, and achieved good application results.

Especially, the bulk rare earth superconducting material with strong magnetic levitation "Y-Ba-Cu-O" grown by melt texture has the characteristics of complete diamagnetic effect and flux pinning effect.

Low-cost liquid nitrogen refrigeration system can realize uncontrolled high-performance magnetic levitation system. According to the analysis of public data, Aerospace Science and Industry Corporation has probably successfully completed the ground high-speed superconducting magnetic levitation rocket sled test operation, and initially mastered the high-speed operation technology of high-temperature superconducting magnetic levitation from 0 to 4,000 kilometers.