Posts Tagged ‘SSME’

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

STS-129: Atlantis in preps for TCDT – SSME nozzle flight rationale


Atlantis is enjoying a relatively smooth pad flow, with only three issues being worked, as engineers prepare the shuttle for the Terminal Countdown Demonstration Test (TCDT) next week….

STS-129: Atlantis arrives in VAB for mating – SSME mystery


Atlantis is preparing to mate with her External Tank (ET-133) and twin Solid Rocket Boosters (SRBs), following rollover to the Vehicle Assembly Building (VAB) on Tuesday morning. Meanwhile,…

Atlantis tracking Tuesday rollover – Two more ETs due at KSC this year


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…

Adhesive tape caused STS-127 SSME nozzle leaks – STS-130 SSME milestone


Pratt & Whitney Rocketdyne engineers have found the application of “tacky tape” – used to seal the throat plugs on the Space Shuttle Main Engines (SSME) since the…

Investigation called after STS-127 SSME 1 found to have 100s of leaks


A failure investigation team has been created for Endeavour’s Number One Space Shuttle Main Engine (SSME) that was used during STS-127, which was found to have hundreds of leaks…

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),…

Atlantis returns to OPF for STS-129 processing – Endeavour SSME contamination


Atlantis has returned to Orbiter Processing Facility (OPF-1) in preparation for her flow towards the STS-129 mission to the International Space Station (ISS). Marking a busy period for…

Downstream processing and planning – preparing the fleet through to STS-135


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,…

STS-119: LH2 leak during tanking postpones launch to March 15


STS-119′s opening launch attempt has been scrubbed until Sunday, March 15,, following a LH2 leak during tanking. The leak related to a carrier plate that is attached to the…

Return to SSME – Ares V undergoes evaluation into potential switch


Constellation engineers are carrying out an evaluation process into a potential option of going back to the SSME (Space Shuttle Main Engine) on the Ares V first stage,…