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VIRTUALISATION After many valve problems, it's a GO for STS-119 shuttle launch
VIRTUALISATION After many valve problems, it's a GO for STS-119 shuttle launch | After many valve problems, it's a GO for STS-119 shuttle launch |
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| by William Atkins | |
| Saturday, 07 March 2009 | |
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According to the NASA media brief NASA Gives ‘GO’ For Space Shuttle Launch on March 11, “Commander Lee Archambault and his six crewmates are now scheduled to lift off to the International Space Station at 9:20 p.m. EDT on March 11 [2009].” The NASA brief stated, “NASA managers completed a review Friday of space shuttle Discovery's readiness for flight and selected the official launch date for the STS-119 mission." The Friday’s review is called a Flight Readiness Review (FRR). During the meeting, “… top NASA and contractor managers assessed the risks associated with the mission and determined the shuttle's equipment, support systems and procedures are ready for flight.” Based on weeks of problems with the Flow Control Valves on Discovery, the review specifically addressed this concern. The NASA brief stated, “The review included a formal presentation of the shuttle's flow control valve work, initiated after NASA identified damage to a valve on shuttle Endeavour during its November 2008 flight. Using a detailed inspections, there are three valves that have been cleared of crack indications now installed in Discovery to support the STS-119 mission.” Three flow control valves on the shuttle provide gaseous hydrogen between the three Space Shuttle Main Engines (SSME) and the external fuel tank (ET) through the Main Propulsion System. Page two continues with more information on the valve problems that have occurred on Space Shuttle Discovery during its preparation for the STS-119 mission. |
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