Tag: GUCP
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STS-133 GUCP root cause to benefit from STS-119/127 investigation
As engineers prepare to take a close look at the Ground Umbilical Carrier Plate (GUCP) at the center of STS-133’s scrub on Friday, a pool of knowledge will be fully utilized in the drive towards finding a root cause. That knowledge comes via a large amount of documentation gained through testing and troubleshooting, after the…
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Bad weather scrubs fifth attempt for STS-127 – GUCP investigation results
Shuttle orbiter Endeavour was again ready to launch to the International Space Station. However, poor weather again put pay to the fifth launch attempt for STS-127, moving launch to Wednesday. Meanwhile, the results of the Ground Umbilical Carrier Plate (GUCP) investigation appear to have been validated via Sunday’s leak-free “near-complete duration” tanking. STS-127 Fifth Attempt Scrub: With…
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ET-131 Tanking Test success – STS-127 now officially tracking launch on July 11
STS-127’s External Tank (ET-131) has completed a tanking test on the realigned Ground Umbilical Carrier Plate (GUCP) and a two-part seal, with no leaks detected. As a result, NASA is officially a go for a launch attempt of Endeavour on July 11. STS-127/ET-131 Latest: Engineers were ready for the tanking test, despite the late retraction of…
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ET-131 repair proceeding to plan – confidence root cause has been found
Preparations for next Wednesday’s tanking test are proceeding well, with the flight seal now replaced ahead of weekend work to reinstall the Quick Disconnect (QD) on the Ground Umbilical Carrier Plate (GUCP). A successful tanking test is expected, due to “high confidence” a misalignment was responsible for at least STS-127’s scrub. ET-131 Latest: Engineers have…
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STS-127 Tanking Test set for next Wednesday – GUCP repair work begins
Managers have set next Wednesday morning for a full-up tanking test of External Tank ET-131 to test a potential solution to the leaking Ground Umbilical Carrier Plate (GUCP). The leading candidate for the cause of the leaks is believed to be related to the External Tank Carrier Assembly (ETCA) mounts, a problem engineers had documented…
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STS-127: Don’t worry about the schedule, let’s fix the problem – Cain
Endeavour will launch only when engineers are happy they have a full understanding of the Ground Umbilical Carrier Plate (GUCP) leak, even if that means slipping STS-127 past the current July 11 NET (No Earlier Than) launch target. A troubleshooting plan is currently being drawn up – which is understood to include a tanking test…
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SCRUB: STS-127 suffers another GUCP leak – Launch moves to NET July 11
STS-127 has been scrubbed for the second time due to another leak at the Ground Umbilical Carrier Plate (GUCP). The leak, first registered as within an acceptable range, before rising to breach the four percent (40,000PPM) limits, appears to point to a different issue with the hydrogen vent system. Endeavour will now have to wait until NET (No Earlier Than)…
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GUCP troubleshooting continues as MMT push for launch on June 17
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. STS-127 Scrub/GUCP Leak: Tanking had been…
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STS-127: Ice in focus as RSS retracts – GUCP leak, launch scrubbed
The ascent threat of ice liberation, as observed on STS-126 and potentially STS-125, will be closely monitored during Endeavour’s launch – which has been delayed by a scrub – following an expansive overview by NASA’s Space Shuttle Systems Engineering and Integration Office (SE&I) to the Flight Readiness Reviews (FRRs). STS-127 S0007 (Launch Countdown) Latest: UPDATE: SCRUB due to…
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STS-127 FRR Outlines Engine and Flight Operations Changes for JAXA Mission
With final launch processing underway on Shuttle Endeavour at Launch Pad-A, NASA managers have outlined several changes to Endeavour’s Main Propulsion System (MPS), Ground Umbilical Carrier Plate (GUCP), and Flight Operations & Integration procedures that will debut on STS-127 next week. STS-127 MPS Inventory Update: Taking center stage in the Space Shuttle Program’s (SSP) Flight…