Shuttle Discoverys launch now no earlier than February 19February 4th, 2009 - 12:51 pm ICT by ANI
Washington, Feb 4 (ANI): A review of space shuttle Discoverys readiness for flight, has made NASA officials decide a launch date no earlier than February 19.
Discoverys STS-119 mission to the International Space Station originally had been targeted for February 12.
The new planning date is pending additional analysis and particle impact testing associated with a flow control valve in the shuttles main engines.
The valve is one of three that channels gaseous hydrogen from the engines to the external fuel tank.
One of these valves in shuttle Endeavour was found to be damaged after its mission in November. As a precaution, Discoverys valves were removed, inspected and reinstalled.
The Space Shuttle Program will convene a meeting on February 10 to assess the analysis.
On February 12, NASA managers and contractors will finalize the flight readiness review, to address the flow control valve issue and to select an official launch date.
The 14-day mission will deliver the stations fourth and final set of solar arrays, completing the orbiting laboratory’’s truss, or backbone.
The arrays will provide the electricity to fully power science experiments and support the stations expanded crew of six in May.
Altogether, the stations 240-foot-long arrays can generate as much as 120 kilowatts of usable electricity - enough to provide about forty-two 2,800-square-foot homes with power.
Discovery also will carry a replacement distillation assembly for the station’’s new water recycling system.
The unit is part of the Urine Processing Assembly that removes impurities from urine in an early stage of the recycling process.
The Water Recovery System was delivered and installed during the STS-126 mission in November, but the unit failed after Endeavours departure.
STS-119 will be Discoverys 36th mission and the 28th shuttle flight dedicated to station assembly and maintenance. (ANI)
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Tags: external fuel tank, flight readiness, flow control valve, gaseous hydrogen, international space station, kilowatts, nasa managers, nasa officials, particle impact, power discovery, recycling process, recycling system, science experiments, shuttle endeavour, shuttle flight, solar arrays, space shuttle program, station assembly, water recovery system, water recycling