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Forecasters at NASA's Spaceflight Meteorology Group say current conditions violate rules for launching Endeavour because of weather near the Shuttle Landing Facility. The runway would be needed in the unlikely event that Endeavour would have to make an emergency landing back at Kennedy. There is also a seabreeze coming off Florida's west coast that is making the weather more dynamic.
Originally posted by PrisonerOfSociety
reply to post by lagenese
All that tech, and they can't blast through a few hundred feet of cumulus nimbus cloud
Originally posted by lagenese
Just annonced a "NO GO" for launch... Oh well
I wonder what will happen now...
Originally posted by Silk
reply to post by PrisonerOfSociety
In a Return To Launch Site (RTLS) abort, the Shuttle continues downrange until the solid rocket boosters are jettisoned. It then pitches around, so the SSMEs are firing roughly against the line of travel. This maneuver occurs in a near vacuum above the appreciable atmosphere and is conceptually no different from the OMS engines firing against the line of travel to de-orbit. The main engines continue burning until downrange velocity is killed and the vehicle is headed back toward the launch site at sufficient velocity to reach a runway. Then the SSMEs are stopped, the external tank is jettisoned, and the orbiter makes a normal gliding landing on the runway at Kennedy Space Center about 25 minutes after lift-off. The CAPCOM calls out the point in the ascent at which an RTLS becomes no longer possible as "negative return," approximately four minutes after lift-off.
Thank you wikipedia