Interstellar Glory “Focus One” (codename “JD-1 “) The reusable liquid oxygen methane engine successfully completed the second start-up long 500-second test run yesterday. The success of the test run marked that Focus One became the world ’s first liquid oxygen methane engine with secondary start-up capability, which also means that Interstellar has broken through another core technology of the vertical recovery of the launch vehicle, which is Hyperbola No. 2. The successful launch of reusable carrier rockets lays a solid foundation.

The vertical landing technology is used to realize the sub-stage recovery of the launch vehicle, which puts high technical requirements on the power system of the rocket. One of the core technologies is the secondary start of the engine . The second start refers to the ability of the launch vehicle engine to start and work normally again in high altitude according to the flight trajectory and timing requirements after the first normal operation is shut down. This is not only the repeated execution of the ignition action, but also the need to solve the heat pump Start-up problems and many other technical difficulties.

It is understood that reentry deceleration is achieved through secondary ignition, which reduces the speed of the rocket ’s first stage of landing. The secondary start technology can not only be applied to the vertical recovery process of the rocket, It can also be applied to the rocket launch into orbit process to improve the rocket’s carrying capacity-after the first ignition boosts the rocket for a period of time, shut down to let the rocket slide to the appropriate position to perform ignition boost again, while saving fuel and improving delivery ability.

The successful development of China ’s liquid hydrogen liquid oxygen rocket engine YF-73 has made China the second country in the world to master the secondary start-up technology of low-temperature engines. Since then, fuel rocket technology has been among the best in the world. Today, a new generation of astronauts continue to work on low-temperature fuel rocket technology, choosing a cleaner, environmentally friendly, and less coking liquid oxygen methane fuel. The successful start-up test of Focus No. 1 engine made China the first country in the world to master the second start of the liquid oxygen methane engine.

Focus One is a 15-ton reusable liquid oxygen methane engine independently developed by Star Glory, using clean and environmentally friendly liquid oxygen methane fuel with low cost and low coking The engine design can be reused up to 30 times, which can save more than 70% of the manufacturing cost of the rocket and greatly reduce the cost of space exploration. Focus No. 1 function can cover multi-task requirements such as deceleration, landing, long-term on-orbit, deep space detection, etc., and has a strong adaptability to the task.

The Interplanetary glory power system engineer introduced that the successful start-up test of Focus No. 1 this time laid a solid foundation for the hyperbolic No. 2 launch vehicle to re-enter the vertical recovery test and the first flight.

Following, the engine will continue to carry out variable thrust test, swing test, engine vibration mode test, engine limit test, engine life and reliability Ground tests such as test drive, and through the 100km vertical take-off and landing test of the reusable launch vehicle hyperbolic No. 2 subclass one independently developed by Interplanetary Glory, fully master the technology of reusable launch vehicle

(Originally titled “Breakthrough Rocket Recovery Key Technologies! China has captured the” World’s First “”)