Posts Tagged ‘SSME’

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SLS trades lean towards opening with four RS-25s on the core stage


The Space Launch System (SLS) is undergoing final refinements – known as trades – on a preferred baseline for the opening flights, with documentation showing a preference to…

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Shuttle orbiters may donate their entire MPS hardware to SLS


NASA’s three retired Space Shuttle orbiters are set to donate their entire Main Propulsion Systems (MPS) to the opening salvo of Space Launch System (SLS) Heavy Lift Launch…

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Preliminary NASA plan shows Evolved SLS vehicle is 21 years away


A new schedule, created by NASA, has provided a “preliminary, budget restricted” manifest which places the first flight of the fully evolved Space Launch System (SLS) in the…

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STS-135: Engineers retest MFV – ET-138 stringer inspections completed


Following its replacement on Atlantis’ SSME-3 (Space Shuttle Main Engine), the new Main Fuel Valve (MFV) underwent testing at Pad 39A –¬†with a slight delay to its completion…

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STS-135: Crew arrives for TCDT as MFV work begins on SSME-3


Multiple efforts are under way for Atlantis’ STS-135 launch preparations, as her four member crew arrived at the Kennedy Space Center (KSC) for the Terminal Countdown Demonstration Test…

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Managers preparing for July 8 SLS announcement after SD HLV victory


Following an intense week of executive level reviews, a decision has been made on the configuration for NASA’s new launch vehicle. With NASA administrator Charlie Bolden agreeing to…

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SLS configuration nears decision point – Two-phase approach rejected


A decision on the configuration of the Space Launch System (SLS) Heavy Lift Launch Vehicle (HLV) is just weeks away, as final evaluations take place into a “staged…

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STS-134: SSMEs ready to fly – Stack cleared following more bad weather


Endeavour is happily moving through her pad flow, despite having to endure yet more bad weather over her launch pad – resulting in additional inspections for hail damage…

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STS-133: Discovery closing in on launch day – MEC investigation review


Engineers have successfully cleared all of Discovery’s minor issues, allowing the veteran shuttle to head towards the upcoming key countdown milestones. While all eyes will be on her…

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STS-133: MMT decide to press ahead with Thursday launch attempt


The Mission Management Team (MMT) evaluations into the anomalies on the redundant Main Engine Controller (MEC) on SSME-3 have concluded with the approval for the required flight rationale,…

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STS-133: Launch delayed at least 24 hours due to Main Engine Controller issue


Discovery has been given another hurdle to negotiate ahead of her opening launch attempt, after an electrical issue was noted on the redundant Main Engine Controller (MEC) on…

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STS-133: Discovery through PRSD load tasks – Stalwart SSMEs reviewed


Discovery is enjoying an issue-free S0007 (Launch Countdown), as engineers complete the loading of the orbiter’s Power Reactant Storage and Distribution (PRSD) system. The veteran orbiter remains on…

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Replica engines recommended for retired orbiters – Flown SSMEs for HLV


All three orbiters are set to donate their Space Shuttle Main Engines (SSMEs) to the Heavy Lift Launch Vehicle (HLV) program, following their final flights. A Program Requirements…

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STS-133: Discovery’s replaced SSME heading into key torque checks


With Discovery’s three Space Shuttle Main Engines (SSMEs) now reinstalled on the orbiter, engineers should know by Friday if they have solved the torquing issue with ME-1. The…

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STS-133: Engine placement order altered for Discovery


Two of Discovery’s Space Shuttle Main Engines (SSMEs) will be re-installed in opposite positions, following their removal to allow for work to take place on Main Engine #1…

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Discovery’s SSMEs to be removed on Thursday due to LPOTP issue


Engineers are preparing to remove Discovery’s three Space Shuttle Main Engines (SSMEs) on Thursday, after SSME 1’s Low Pressure Oxidizer Turbo Pump (LPOTP) failed torque checks. No schedule…

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Atlantis into pressurization tasks – numerous SSME items discussed at FRR


Engineers are heading into a weekend of critical operations for STS-132, as Atlantis undergoes flight pressurization operations on the systems that will aid her journey to the International…

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STS-130 Endeavour beats the weather and launches, SSME improvements


Shuttle Endeavour has launched on the second launch to start STS-130, following a 24 hour scrub due to unacceptable cloud cover on Sunday morning. The youngest orbiter in…

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IFA Review reveals solid performance of STS-129 SRBs and Main Engines


Capping off a highly successful year for the Space Shuttle Program, the STS-129 flight of Atlantis last month has undergone its final, official post-flight assessment: the all-important In-Flight…

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Extension decision no closer after “one heck of a year” for shuttle


The Space Shuttle Program (SSP) will have “no idea” where it stands from a budget standpoint until February, as the viability of extending the shuttle manifest continues to…