STS Space Shuttle (Model)

STS Space Shuttle (model)

The Space Shuttle is a reusable U.S. space vehicle. Developed by the National Aeronautics and Space Administration (NASA), it consists of a winged orbiter, two solid-rocket boosters, and an external tank. As with previous spacecraft, the shuttle is launched from a vertical position. Liftoff thrust is derived from the orbiter’s three main liquid-propellant engines and the booster. After 2 minutes the boosters use up their fuel, separate from the spacecraft, and after deployment of parachutes, are recovered following splashdown. After about 8 minutes of flight, the orbiter’s main engines shut down; the external fuel tank is jettisoned and burns up as it reenters the atmosphere. The orbiter meanwhile enters orbit after a short burn of its two small Orbiting Maneuvering System (OMS) engines.

The return to earth, the Orbiter turns around, fires its OMS engines to reduce speed, and after descending through the atmosphere, lands like a glider. Five different orbiters have been in service: Atlantis, Challenger, Columbia, Discovery, and Endeavour. Two have been lost in accidents: Challenger and Columbia