KENNEDY SPACE CENTER, FLA. -- The Rotating Service Structure is rolled back from around Space Shuttle Discovery at Launch Pad 39B for a propellant-loading test of Discovery's External Tank (ET) on April 14. During the test, the tank will be filled to launch levels with ultra-cold hydrogen and oxygen propellants, known as 'cryogenics.' The test is designed to evaluate how the tank, orbiter, Solid Rocket Boosters and ground systems are performing under full 'cryo-load.' Throughout testing, engineers will observe the effectiveness of key safety modifications made to the External Tank. NASA’s Retu
KENNEDY SPACE CENTER, FLA. -- The Rotating Service Structure is rolled back from around Space Shuttle Discovery at Launch Pad 39B for a propellant-loading test of Discovery's External Tank (ET) on April 14. During the test, the tank will be filled to launch levels with ultra-cold hydrogen and oxygen propellants, known as 'cryogenics.' The test is designed to evaluate how the tank, orbiter, Solid Rocket Boosters and ground systems are performing under full 'cryo-load.' Throughout testing, engineers will observe the effectiveness of key safety modifications made to the External Tank. NASA’s Return to Flight mission, STS-114 on Space Shuttle Discovery, is targeted for launch on May 15 with a launch window that extends to June 3.
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