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After the SpaceX engine problem is solved, NASA is ready to send four astronauts to the international space station

via:cnBeta.COM     time:2020/10/29 8:31:10     readed:137

According to foreign media CNET,SpaceX and nasa (NASA) said they had resolved a recent episode in the falcon 9 rocket and planned to send four astronauts aboard a manned dragon spacecraft to the international space station on november 14.American space forces plan to launch the falcon 9 GPS satellite on october 2nd, a few seconds before liftoff. A subsequent investigation revealed that two of the rocket's nine Merlin engines tried to start early, triggering an automatic abort.

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In a conversation with reporters on Wednesday, Hans koenigsmann, SpaceX's vice president of construction and flight reliability, explained that the suspension prevented a "hard start," which could cause some damage to the engine.

The engine was removed from the rocket for testing. It was found that the pipeline of a small relief valve was blocked. A red masking paint similar to nail polish, apparently dropped during cleaning, was washed into a hole about 1/16 inches (1.57 millimeters) in diameter and hardened there, blocking the pipeline.

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Koenigsmann said SpaceX "found the same tendency" in the engine that will be used for crew-1 launch and NASA's sentinel-6 Michael Freilich satellite to monitor global sea levels, which is scheduled for launch on November 10. The suspected engine has been replaced. NASA and SpaceX now say they expect to be ready for launch on November 14.

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The crew-1 mission marks the first manned flight since the demo-1 manned dragon boat carrying NASA astronauts Doug Hurley and Bob Behnken to the international space station; that landmark flight was the first manned flight from the United States since the end of the space shuttle program.

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When Crew-1 delivers NASA astronaut Michael Hopkins、Victor Glover and Shannon Walker, and the Soichi Noguchi of the Japan Aerospace Exploration Agency (JAXA) to the International Space Station, it will expand the station's crew to seven, allowing for more research in orbit.

Crew-1 will be launched from the Kennedy Space Center in Florida at 4:49 p.m. Pacific time (7:49 p.m. Eastern time) on November 14.

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