From: Kennedy Space Center
Posted: Thursday, April 21, 2011
Technicians on Kennedy's Launch Pad 39A wrap up pressurization of space shuttle Endeavour's Orbital Maneuvering System, Reaction Control System, Main Propulsion System and shuttle main engines today.
These various propulsion systems are pressurized using helium and nitrogen gases. Techs also continue closing out work in Endeavour's aft section for its upcoming launch at 3:47 p.m. EDT April 29.
At NASA's Johnson Space Center in Houston, Endeavour's astronauts conduct their final integrated ascent training today in the center's motion base simulator.
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