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STS-1
OV-102 (Columbia)
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"The only bad thing is we're
going to have to come down."
- John Young |
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Altitude: 166 nm
Inclination: 40.3 degrees Number of orbits: 36 Duration: 54 hours, 20 minutes, 53 seconds Distance: 1,074,567 miles Weight at launch: 219,258 Weight at landing: 195,472 |
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To conserve fuel, Columbia was placed into gravity gradient attitude. A maneuver first developed during the Gemini program, the spaceship is placed in a nosedown position, perpendicular to the surface of the earth. Stability is achieved because the gravitational forces of the Earth are stronger on the part of the ship nearest the planet; these forces, in time, overcome the inertial forces acting on the ship as a whole. Without this maneuver, thrusters would have to be used to keep the ship stable. |
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