The huge motor is composed of a segmented motor case loaded with solid propellants, an ignition system, a movable nozzle and the necessary instrumentation and integration hardware. The solid rocket motor is the largest solid propellant motor ever developed for space flight and the first built to be used on a manned craft. In addition to the solid rocket motor, the booster contains the structural, thrust vector control, separation, recovery, and electrical and instrumentation subsystems. Image left: The Solid Rocket Boosters separate from the Shuttle about two minutes after launch Click image to play video of SRB separation (no audio) Photo credit: NASA. Thrust of both boosters is equal to 5,300,000 lbs. The boosters also assist in guiding the entire vehicle during initial ascent. They are recovered by ships, returned to land, and refurbished for reuse. At an altitude of approximately 45 km (24 nautical miles), the boosters separate from the orbiter/external tank, descend on parachutes, and land in the Atlantic Ocean ( + View Video: SRB Processing). The Solid Rocket Boosters (SRBs) operate in parallel with the main engines for the first two minutes of flight to provide the additional thrust needed for the Orbiter to escape the gravitational pull of the Earth. + NASA Home > Mission Sections > Space Shuttle > Return to Flight > Space Shuttle System For instructions, click hereġ2% Polybutadiene acrylic acid acrylonite (binder) NASA - Solid Rocket Boosters The site requires that JavaScripts be enabled in your browser.
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