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Share with friends and circles of friends with wechat scanning QR code < / P > < p > on October 26, recently, Elon Musk, CEO of SpaceX, said that the company had conducted the first static ignition test on the upgraded Raptor 2 engine < p > < / P > < p > this Raptor 2 engine prototype finally exploded in the test, but it is also the most powerful rocket engine ever. It is reported that the thrust of the super heavy booster equipped with Raptor 2 engine will be 50% higher than that of the most powerful rocket in history < p > musk revealed on personal social media that "(Raptor 2 engine) had a pressure of 32.1 MPa before the explosion, but the explosion was caused by low oxygen delivery pressure rather than the engine itself." < / P > < p > musk also said, "Raptor 2 engine has a larger straight throat, so the thrust when the pressure reaches 32.1 MPa is about 245 tons." < / P > < p > previously, SpaceX competitor blue origin's be-4 engine may be the most powerful methane / oxygen rocket engine tested to date. At present, be-4 is still under development and is expected to provide power for ula's Vulcan rocket and blue origin's reusable new Glen rocket in the future. The design thrust of be-4 rocket engine is up to 244 tons. However, raptor 2 engine took the lead of be-4 by a weak advantage during the first static ignition test. The instantaneous pressure of the main combustion chamber reached 32.1 MPa and the thrust briefly reached 245 tons < p > but it should be clear that be-4 did not explode during the first full thrust test. Blue origin called the be-4 thrust "2400 kn" on the official website, which is equivalent to 244.5 tons < p > musk said that Raptor 2 engine is a significant improvement over Raptor 1 engine. Earlier, musk said that the Raptor 2 engine can produce 185 tons of thrust when the pressure in the main combustion chamber is close to 27 MPa < p > SpaceX has been continuously improving Raptor 1 engine. In a pressure test in August 2020, the main combustion chamber pressure of Raptor 1 engine reached 33 MPa and operated for about 10 seconds at a pressure higher than 32 MPa without any failure. At that time, musk said, "the Raptor engine has just reached the pressure of 33 MPa without explosion!" < / P > < p > if the maximum pressure of Raptor 2 engine can also reach 33 MPa, it will produce about 252 tons of thrust, which is 12% more than Raptor 1 engine < p > musk said that the main difference between Raptor 2 engine and Raptor 1 engine is that its pipes and cables are simpler, and the throat size of the main combustion chamber of the engine is larger, which makes the engine produce more thrust, but with a slight loss of efficiency. In the past two years, musk has proposed to optimize the thrust of Raptor engine, and the maximum thrust is even more than 300 tons. However, in recent months, musk said that SpaceX had decided to streamline the Raptor engine types and retain only two versions. One is a raptor engine with a sea level nozzle, and the other has a larger vacuum optimized nozzle. (Chen Chen) < / P > < p >

2023-03-22 10:04:45