{"id":11978,"date":"2010-03-16T18:08:49","date_gmt":"2010-03-16T18:08:49","guid":{"rendered":"http:\/\/euvolution.com\/futurist-transhuman-news-blog\/rss-rollback-payload-to-the-pad-delayed-at-least-24-hours\/"},"modified":"2010-03-16T18:08:49","modified_gmt":"2010-03-16T18:08:49","slug":"rss-rollback-payload-to-the-pad-delayed-at-least-24-hours","status":"publish","type":"post","link":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/space-station\/rss-rollback-payload-to-the-pad-delayed-at-least-24-hours.php","title":{"rendered":"RSS rollback, payload to the pad delayed at least 24 hours"},"content":{"rendered":"
Last night, while venting shuttle Discovery<\/span><\/a>'s aft fuel propellant tanks in preparation for fuel loading, the Right Reaction Control System<\/span> (RRCS<\/span>) fuel helium tank pressure unexpectedly decreased in unison with the RRCS <\/span>fuel propellant tank.

Troubleshooting overnight revealed at least one helium isolation valve that is leaking or is remaining in the open position when it is expected to be closed.<\/p>

Following a review meeting this morning, engineers have decided to complete Orbital Maneuvering System <\/span>(OMS<\/span>) Reaction Control System fuel loading, Solid Rocket Booster Hydraulic Power Unit <\/span>(HPU<\/span>) tilt system and Auxiliary Power Unit<\/span> (APU<\/span>) hydrazine loads this weekend.<\/p>

Engineers will meet again Monday morning to discuss options.<\/p>

Currently, Rotating Service Structure <\/span>(RSS<\/span>) rotation will be delayed to no earlier than Tuesday, March 16; and payload delivery to the pad will be delayed to no earlier than Wednesday, March 17.<\/p>

Launch still is targeted for April 5.
<\/p><\/span><\/div>

Space Shuttle Mission: STS-131<\/span><\/h2>
\"STS-131 <\/span><\/div>
Image above: STS-131 Commander Alan Poindexter and Mission Specialist Dorothy Metcalf-Lindenburger prepare for take off in a NASA T-38 trainer jet. <\/span>
› View larger image<\/a><\/span><\/div>


› Meet the STS-131 Crew<\/a><\/span><\/p>

Discovery and Crew Prepare for STS-131 Mission<\/b>
Commander Alan Poindexter is set to lead the STS-131 mission<\/span> to the International Space Station aboard space shuttle Discovery. Joining Poindexter will be Pilot Jim Dutton and Mission Specialists Rick Mastracchio, Clay Anderson, Dorothy Metcalf-Lindenburger, Stephanie Wilson and Naoko Yamazaki of the Japan Aerospace Exploration Agency.<\/p>

Discovery will carry a multi-purpose logistics module filled with science racks for the laboratories aboard the station. The mission has three planned spacewalks, with work to include replacing an ammonia tank assembly, retrieving a Japanese experiment from the station’s exterior, and switching out a rate gyro assembly on the S0 segment of the station’s truss structure.<\/p>

STS-131<\/span> will be the 33rd shuttle mission<\/span> to the station.<\/p>

Additional Resources<\/strong><\/p>

› Reusable Solid Rocket Motor and Solid Rocket Boosters<\/a><\/p>

Orbiter Status<\/strong><\/p>

› About the Orbiters<\/a><\/p>

View my blog's last three great articles....<\/span>
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› STS-130 Mission Summary (448 Kb PDF)<\/a>
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