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Solid rocket booster - Wikipedia, the free encyclopedia (305 words) |
 | A solid rocket booster (SRB) is used to provide the main thrust in spacecraft launches from the launchpad up to an altitude of about 45 kilometres. |
| One example of the increased performance from SRBs is the Ariane 4 rocket. |
| Solid rocket motors cannot easily be turned off or have their thrust terminated during flight, which is a risk factor for manned spacecraft. |
| Rocket - encyclopedia article about Rocket. (4276 words) |
| Rockets are used to accelerate, change orbits, de-orbit for landing Landing is the last part of a flight, where a flying animal or aircraft returns to the ground. |
| Modern rockets were born when, after receiving a grant in 1917 from the Smithsonian Institution, Robert Goddard attached a de Laval nozzle to a rocket engine's combustion chamber, doubling the thrust and enormously raising the efficiency, giving birth to the real possibility of practical space travel. |
| After the war, rockets were used to study high-altitude conditions, by radio telemetry of temperature and pressure of the atmosphere, detection of cosmic rays, and further research. |
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