Space Launch System Computer System Leak Causes SpaceX Launch CountdownThe recent premature SpaceX launch was attributed to a hydrogen leak in the rocket's computer system. Although the leak alerted the mission management team‚ the countdown continued‚ despite the new finding. The countdown began at 7 a.m. Monday and the Space Force 45th Weather Squadron predicted favorable conditions. The test must be conducted under conditions with a less than 20 percent chance of lightning within five nautical miles of the launch site during the first hour of fuel loading.
After three unsuccessful attempts nASA's Space Launch System moon launch rocket passed a dress rehearsal and fueling test on Monday. However‚ another hydrogen leakage caused serious problems. The booster will not be allowed to take off until it is repaired. NASA officials had been open to the possibility that a launch could be made in August. However‚ it is not known whether the new problem will affect those plans. The test met almost all NASA's objectives‚ confirming that the complex rocket software and hardware work as expected during a real launch. Charlie Blackwell Thompson‚ who was the first woman to be a launch director on a major rocket‚ stated that it is a wonderful day for their team. They were all so proud to complete the loading and terminal count. It was a great day and very exciting. NASA's Space Launch System moon launcher was loaded Monday with hydrogen rocket fuel and supercold liquid oxygen. Engineers had more problems with leaky fuel line fittings. Credit to CBS News The earlier fueling tests there were a number of issues that could have caused the countdown to be cut short‚ such as a leaky hydrogen feed line connector. The countdown stopped well before fuel loading was completed and before the terminal phase (the last 10 minutes) could start in all three cases. Engineers were able to successfully load three quarters million gallons liquid oxygen and hydrogen fuel in the SLS rockets' two stages on Monday After the fuel connector leaking was repaired. However‚ there was another hydrogen leak that required a quick disconnect fitting. Mission managers approved an agreement to hide sensor readings‚ which would otherwise have led to an abort. This effectively concealed the leakage from the launch control system. The original plan was to start counting down to 33 seconds‚ then rewind to 10 minutes. This would demonstrate that the team can manage an unexpected hold during a launch countdown. The count would then resume at T-minus 9.3 seconds just before the real launch. The hydrogen leak delayed the countdown for several hours. Blackwell-Thompson‚ the launch control team and Blackwell-Thompson decided to instead skip down to 33 seconds to go straight to T-minus 9.3 seconds. After an extra hold at the 10-minute T-minus point‚ the countdown moved smoothly into the final minutes. It passed each milestone without any problems. At T-minus 29 second‚ the countdown was supposedly handed to the SLS Rockets onboard Computer.
However‚ the cutoff command was given and the countdown was halted. This was presumably due to the detection of a leak somewhere within the computer system. Although they couldn't achieve their goals‚ the SLS team was very close. Blackwell Thompson said that getting two rocket stages loaded full of propellant‚ and in stable replenish mode was a significant step. This has been done many times before in simulation‚ but not with cryogenics. She was referring to rockets that use super-cold propellants. Today‚ all the stages were completed and we reached the replenishment stage‚ which was an important milestone. Our team wanted to see how our hardware did and what the terminal count was. Both performed extremely well. It is not known if the SLS (the centerpiece of NASA's Artemis moon program) will be launched on the maiden flight. It is unknown if a launch in the summer is possible. An ex-White House advisor discusses the key takeaways of Jan. 6 hearings The end of the controversial term at Supreme Court is near Banks block attempts to trace suspicious gun sales