Posts Tagged ‘STS-131’

NASA evaluates STS-131 Mission Timelines as Discovery heads toward S0007


With Discovery’s opening launch attempt on the STS-131 mission now officially set for Monday, April 5 at 6:21:22 a.m., final pre-countdown operations are underway at Launch Pad 39A…

STS-131: Agency FRR approves April 5 following debate on several issues


The decision to call a Special PRCB (Program Requirements Control Board) meeting on Tuesday paid dividends, as several outstanding issues gained the required flight rationale – with all…

STS-131: SRB flight rationale gained following gyro test failure


With Discovery’s payload now installed into the orbiter’s Payload Bay, all eyes are on Friday’s Agency Flight Readiness Review (FRR). Several items of interest are under review, all…

STS-131: Special PRCB on RRCS notes split opinion on flight rationale


Friday’s Agency Flight Readiness Review (FRR) will have several dissenters pitching against flight rationale for STS-131′s launch, relating to the faulty helium isolation valve on the Right Reaction…

STS-131: RRCS testing positive ahead of FRR flight rationale decision


A full set of testing on the primary and secondary regulators on Discovery’s Right Reaction Control System (RRCS) – located downstream of the leaking helium isolation valve –…

STS-131: Payload arrives as engineers work PCMMU issue on Discovery


As work continues at Launch Pad 39A in terms of STS-131 payload arrival and transfer to the Payload Changeout Room, engineers are continuing to work an issue with…

STS-131: ERB discuss troubleshooting and flight rationale for RRCS valve leak


An Engineering Review Board (ERB) meeting has taken place on Monday to discuss options relating to the leak on Discovery’s Right Reaction Control System (RRCS). Five troubleshooting procedures…

STS-131: RCS leak on Discovery’s right OMS Pod threatens rollback


A leak relating to Discovery’s RCS (Reaction Control System) Helium Isolation Value – on the Right Hand (RH) OMS (Orbital Maneuvering System) fuel system – is undergoing troubleshooting at…

STS-131 enjoys smooth SSP FRR – Discovery into hypergolic loading


As expected, STS-131 has passed its latest milestone, with the approval to push forward to the Agency level Flight Readiness Review on March 26 – following the conclusion…

STS-131 into FRRs – Managers check manifest status ahead of April decision


Shuttle and International Space Station (ISS) managers have been busy discussing the launch dates for what are currently the final flights of the manifest, although STS-131 remains on track…

STS-131 pushes into FRRs – STS-134 meetings point to large AMS delay


No major topics are expected at next week’s Space Shuttle Program (SSP) Flight Readiness Review (FRR), as Discovery continues to push towards her April 5 launch date. Processing…

STS-131: Discovery rolls out to Pad 39A – ET repaired following bird vandalism


Discovery has rolled out of the Vehicle Assembly Building (VAB) just after midnight on Wednesday morning in preparation for her April 5 STS-131 launch date. With rollover to Pad 39A…

NASA continues evaluations for ISS Dual Docked Operations


Following initially positive opening investigations into the possibility of allowing a Space Shuttle orbiter to be present (i.e. docked) to the International Space Station (ISS) during Russian Progress…

STS-131 mated as “schedule crunch” pressures downstream launch manifest


Discovery and External Tank ET-135 have completed mating operations with no issues reported, as STS-131 continues to enjoy a smooth flow towards rollout next week. Meanwhile, STS-132′s ET-136…

One in, one out – Discovery and Endeavour tag for next mission


Endeavour has safely returned to her Orbiter Processing Facility (OPF-2), following the highly successful STS-130 mission – which concluded on Sunday night with a safe landing at the…

Playing musical chairs with Soyuz, STS-132 continues to track May launch


Despite STS-131′s slip to April, managers are continuing to push forward with plans to launch Atlantis on STS-132 the following month, on May 14. Dependant on Discovery launching…

STS-131: Cold weather delays flow – DDO constraint pushes launch into April


Rollover of Discovery is still pending, due to temperature constraints relating to several systems on the orbiter, resulting in new rollover date of February 22. Meetings are also…

STS-130: Endeavour tracking no major FRR topics as launch pace heats up


With less than two weeks until STS-130′s launch with Endeavour, managers are already setting up the readiness meetings for STS-131 – which is scheduled to launch the following…

STS-131: ET/SRB mating scheduled for next Monday – MAF plan for IFRs refined


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…

All three orbiters enjoying busy flows – Atlantis has her nose cap repaired


With Endeavour undergoing pad validation work – as engineers make the hundreds of connections to prepare her for launch in a month’s time – processing of her older…