2021-11-13

SpaceX tested the static ignition of orbital spacecraft, and all six engines were started

By yqqlm yqqlm

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the test was conducted at 1:13 p.m. Eastern time on the 12th. Elon Musk, founder and CEO of SpaceX, tweeted shortly after the test and confirmed: “all six engines have been tested for static ignition!”

SpaceX tested the static ignition of orbital spacecraft, and all six engines were started

SpaceX is accelerating the development of starship systems to carry people and goods to the moon, Mars and other distant space destinations. The system consists of two fully reusable large components, a 50 meter high space capsule called starship and a super heavy rocket booster

SpaceX has also launched starship prototypes before, sending a few prototypes with three engines to an altitude of about 10km. But the SN20 will take a bigger leap: it will take off on a super heavy rocket in its first orbital test flight, and SpaceX aims to launch in the coming weeks or months

at present, the specific time of launch is not clear, partly because the Federal Aviation Administration (FAA) is still conducting environmental assessment of the orbital launch site of the interstellar base. FAA has submitted a draft assessment and collected public comments on the document, but the final report has not been released

the latest test is not the first static ignition test of SN20. In such tests, the engine is briefly started while the aircraft is still fixed on the ground. On October 21, SpaceX conducted the so-called back-to-back static ignition test of SN20, but only two Raptor engines were installed on the spacecraft at that time

during the test on the 12th, SpaceX staff installed six Raptor engines on the S20, including three standard “sea level” Raptor engines (flying in the earth’s atmosphere) and three optimized vacuum engines (flying in space)

SpaceX confirmed that this is the most ambitious ground test conducted by the company to date. The S20 spacecraft is equipped with six complete Raptor engines. So far, SpaceX has never started more than three engines on a starship or super heavy rocket booster prototype

this makes the test pressure of the six engines at least twice that of any previous test, whether it is a starship or a booster. Even at the minimum throttle setting, the six engines of the S20 may produce more than 600 tons of thrust, while the thrust at full load is about 1100 tons, which means that the thrust of the starship is almost 50% stronger than that of the Falcon 9 rocket