An upper elevon “sliding seal” on one of Endeavour’s port wing flippers has protruded, although early Damage Assessment Team (DAT) reports claim only a low level of concern. As STS-130 moved through Flight Day 3, Endeavour and her External Tank appear to have enjoyed an extremely clean ascent, as the orbiter and her crew docking [...]
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Clouds over the Kennedy Space Center (KSC) have scrubbed Endeavour’s launch by 24 hours. Earlier, tanking was delayed tanking by 30 minutes to allow engineers to clear the pad after working on a cabin pressure issue, prior to a smooth countdown. Meanwhile, External Tank (ET-134) – which will be flying with Endeavour on STS-130 – is sporting [...]
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With Endeavour enjoying a smooth flow on Pad 39A, preparations for Discovery’s STS-131 mission in March are picking up the pace – with the milestone of External Tank (ET-135) mating with the twin Solid Rocket Boosters (SRBs) set to take place next Monday. Meanwhile, the Michoud Assembly Facility (MAF) in New Orleans has been handed [...]
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External Tank ET-135 has arrived at the Kennedy Space Center (KSC), following its journey from New Orleans in the Pegasus Barge. The tank will remain inside the barge until the new year, ahead of being towed into the Vehicle Assembly Building (VAB) for processing. Meanwhile, engineers are continuing to evaluate the foam loss observed from [...]
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Following two intertank foam loss events on recent flights, further checks have been carried out on the next External Tank set to fly – ET-134. Additional pull tests have shown good results, as Endeavour prepares to join the stack in the Vehicle Assembly Building (VAB) in readiness for what is now a February 7 launch [...]
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STS-129’s crew have worked through the primary Flight Day 2 task of inspecting Atlantis’ Thermal Protection System via the Orbiter Boom Sensor System (OBSS), while the Mission Management Team (MMT) review ascent data and imagery of STS-129’s External Tank (ET-133). Post Sep ET Umbilical Well photography shows what appears to be one of the cleanest tanks on [...]
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Last week’s Space Shuttle Program (SSP) Flight Readiness Review (FRR) has approved the installation of a special minicam pointing out of window 4 on Atlantis’ flight deck. The camera will film the forward portion of the External Tank (ET) during flight, in order to capture the behavior of the LO2 Ice Frost Ramps (IFRs) during [...]
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Following the multiple Intertank foam debris liberations from Endeavour’s STS-127 External Tank (ET-131) in July, engineers at the Kennedy Space Center and the Michoud Assembly Facility (MAF) in Louisiana undertook an ambitious campaign of Non Destructive Evaluations and Pull Tests on downrange tanks to ensure that these kinds of liberations would not occur again. Those [...]
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STS-129 is pressing ahead with the next processing milestone, with Atlantis preparing to roll over from her Orbiter Processing Facility (OPF-1) for the short journey to the Vehicle Assembly Building (VAB) on Tuesday. Meanwhile, the shipping dates have been set for the next two External Tanks (ETs) – both scheduled to arrive at the Kennedy Space [...]
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The LO2 Ice Frost Ramps (IFRs) will be modified to mitigate against foam liberation – pending design verification – from ET-133 onwards. However, ET-132 has gained the opening round of “rationale for acceptance” via the Space Shuttle Program (SSP) Flight Readiness Review (FRR), which will be verified by a Safety Panel and up for approval [...]
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The Space Shuttle Program (SSP) Flight Readiness Review (FRR) heads into a two day meeting on Tuesday, with the focus on the status of ET-132’s Ice Frost Ramps (IFRs). STS-128 may have to rollback for modifications to the ramps – if managers fail to agree on risk acceptance. Interestingly, documentation on the ramp that has [...]
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Meetings are taking place through Friday to work on risk acceptance for two LO2 Ice Frost Ramps (IFRs) on Discovery’s External Tank (ET-132), following a full review of STS-127’s LO2 IFR liberation event during launch. If managers call for foam loss mitigation on the ramps, the STS-128 stack will rollback to the Vehicle Assembly Building [...]
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Although no ill effects were suffered by Endeavour, the problems with her External Tank (ET-131) – both prior and during last month’s launch – called for investigations into the downstream tanks, the latest of which is due to fly with Discovery later this month. Thanks to those evaluations, additional confidence has been gained ahead of [...]
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With NASA authorization language already being drawn up behind the scenes by Congress, Augustine Commission ISS/Shuttle subgroup lead Dr Sally Ride – along with several key NASA and United Space Alliance (USA) managers – have embarked on a major push to extend the shuttle program, linking the move with the allowance for the International Space [...]
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Shuttle engineers like to check, double check, and check again, whenever there’s a flight safety concern – and that was more than the case with the pull tests that have been conducted on External Tank ET-132, following an increased number of foam liberation events during ET-131’s ride to orbit with Endeavour. The test results show [...]
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Endeavour has won the right to make a launch attempt on June 17 (Wednesday), following NASA discussions relating to the schedule priorities of the Eastern Range. The decision was made easier thanks to good progress on replacing hardware on External Tank ET-131’s Ground Umbilical Carrier Plate (GUCP), as engineers work around the clock to “safely [...]
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In a similar event to STS-119’s scrub, Endeavour’s launch has been delayed due to a significant leak registered in the region of the Ground Umbilical Carrier Plate (GUCP). Engineers will dismantle the troublesome hardware at the pad, with the aim to attempt a single launch opportunity on June 17.
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Even though shuttle managers are preparing for two missions in the space of a month, efforts on the downstream flights are at various stages of processing and planning, all the way through to STS-135 – which is currently the LON (Launch On Need) placeholder for what is currently the last shuttle mission – STS-134 – [...]
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The dual processing flows for Atlantis and Endeavour are proceeding to plan, with the main engineering focus on the ET camera flash system, which is undergoing troubleshooting on Atlantis. Managers have also completed the review of the SSP (Space Shuttle Program) Flight Readiness Review (FRR), with evaluations taking place on advancing the launch date by [...]
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Shuttle Endeavour has completed her rollout to 39B, where she will be put through a part flow as the STS-400 LON (Launch On Need) support for Atlantis’ STS-125 mission. During this flow, engineers will test the alignment procedures with the Ground Umbilical Carrier Plate (GUCP) – following the leak during STS-119’s opening launch attempt.
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