China News Agency, Beijing, April 3rd (Guo Chaokai) A reporter learned from the China Academy of Carrier Rocket Technology on the 3rd that China's first implementation of the 54th Beidou Navigation Satellite was carried out on the Long March 3B carrier rocket on March 9. Accurate recovery of the rocket wreck parachute control.
In this mission, the developer installed multiple parachutes on a booster of the rocket, and successively unfolded during the fall process, successfully controlling the attitude and direction of the booster when falling; and provided an accurate landing point based on Beidou SMS The positioning information verified the feasibility of the overall scheme of the parachute control system and laid the foundation for further iterative improvements.
Hu Wei, head of the Booster Umbrella Control Landing Area Project of the China Aerospace Science and Technology Group Co., Ltd.'s first design department (hereinafter referred to as the first), told China News Agency that a copy of the report has been published since April 2, 1958. Since its establishment, in 62 years, it has made outstanding contributions to major projects represented by China's "two bombs and one star", manned spaceflight and lunar exploration. In the new era, the safety problem of rocket landing zone is becoming increasingly serious. In order to master the landing zone control technology and improve the safety, a research and development team comprehensively considered from the aspects of technology realization, economic affordability, and simple engineering. The grid rudder actively controls the separation of the carrier rocket and returns to two technical solutions, which can achieve a reduction of more than 85% in the future rocket sub-level debris landing area, greatly improving the safety of the sub-level debris landing area of the rocket launched by the Chinese inland launch site. Sex.
On July 26, 2019, the Long March II C rocket launch mission was equipped with a sub-class landing zone control device based on the grid rudder. The first-level arrow body finally fell in a predetermined landing area. The flying attitude of the first-stage separated body was stable before the landing, and the actual landing distance was less than 3km from the theoretical landing point. The demonstration verification test was a complete success, completing the first domestic initiative in China.
At the same time, a technical team is also advancing the research of wing-based booster landing zone control technology. The technical team has obtained important information such as the position and attitude of the rocket separation body re-entry process in previous multiple flight carrying tests, and has continued to advance system-level carrying tests. The test of the Long March No. 3B carrier rocket verified the feasibility of the overall scheme of the parachute control system and a solid step in the verification of the landing area control technology.
In addition to significantly improving the safety of the landing area, the launch vehicle separation area control technology for the launch vehicle will also expand the mission profile and performance of the rocket launch in the inland launch site to enhance the rocket's carrying capacity. In the future, one will also realize the mass production, low-cost production and reliability improvement, so as to have the foundation and conditions for landing zone control equipment, and greatly improve the landing zone safety of the carrier rocket sub-level separator. (Finish)