Thursday’s Program Requirements Control Board (PRCB) meeting overviewed the status of Discovery’s External Tank (ET-137), with recommendations made to install radius blocks on over 100 stringers. A new launch date will be entered as a Change Request (CR) next week, based on negotiations with the ISS on the ability to achieve either a February 24 [...]
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The root cause of the cracked stringers on STS-133′s External Tank (ET-137) may have been found, following the investigation team’s findings that the material used for the tank’s intertank support beams was found to be “mottled”, when compared to standard material. Meanwhile, the ongoing evaluation into the modification plan for the stringers may slip the [...]
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NASA managers have made a key decision to modify 34 stringers on the LO2 flange area of the tank – following the observation of several cracks around its circumference. The radius block modification is designed to mitigate potential foam liberations from the flange, an incident that has never been seen before via flight history.
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As NASA enters 2011, preparations are underway for an exciting new venture in space operations with the development of commercial transportation services to the International Space Station, the creation of a 21st Century launch facility at KSC, and development of a new Heavy Lift Launch Vehicle for NASA - all as the U.S. and world space [...]
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