Share with friends and circles of friends with wechat scanning QR code < / P > < p > on July 25, SpaceX is still building and testing the Starship launch system at its facility in boccachka, Texas, USA. Elon Musk, CEO of the company, confirmed in an interview that SpaceX had a rocket test accident in April this year, A fuel delivery pipe in the super heavy booster prototype was flattened during pressure test

musk revealed the accident in an interview with YouTube channel "daily astronaut" this month. He said, "we had a small problem when testing the prototype of rocket booster No. 7. We crushed part of the delivery pipe in the liquid oxygen storage tank. Therefore, we need to send the prototype back to repair the delivery pipe, which may take us a week to solve the problem." However, SpaceX did not confirm the accident at that time, and engineers finally transported the booster back to the test facility from the launch pad

coincidentally, on July 11, SpaceX had another accident during the test. A huge fireball appeared at the bottom of the rocket booster, and SpaceX had to transport the prototype of the rocket booster from the launch pad back to the R & D facility for repair

after returning to the test facility in April, SpaceX engineers and technicians completed the maintenance of the prototype of rocket booster 7 in just two weeks, and then transported it back to the launch pad. Musk said, "we had a small problem when testing the prototype of rocket booster No. 7. We crushed part of the delivery pipe in the liquid oxygen storage tank. So we need to send the prototype back to repair the delivery pipe, which may take us a week to solve the problem."

another SpaceX employee said that such an accident can enable the company to learn from its mistakes. Traditional airlines will design aerospace equipment according to strict standards to ensure that there will be no problems during launch. In contrast, SpaceX will quickly design, test, adjust the design after problems occur, and finally solve the problems

in the interview, musk also revealed the design information of the igniter of SpaceX's latest rocket engine. The Starship will carry SpaceX's Raptor 2 rocket engine, which involves an igniter to ignite premixed fuel and oxidant

musk said that the new ignition device is a proprietary design of SpaceX, located inside the engine, but he did not disclose any technical details

musk said, "What we installed in the main chamber of Raptor 1 rocket engine is the torch igniter. You can see the nozzle, and the thing next to it is the torch igniter. I mean, this is the most basic design, so the torch igniter is in the main chamber. But there is no torch igniter in the main chamber of Raptor 2 rocket engine, so the surrounding of the main chamber is much cleaner.

musk also said that Raptor 2 rocket engine The ignition technology of is SpaceX's "secret weapon". This design enables the company to reduce the weight, complexity, overall cost and the possibility of failure of the rocket engine, and improve the ignition reliability. (Chenchen)