05-01-2015, 04:41 AM
I need full abstract and ppt for space shuttle and its advancements.plz send me as soon as possible
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space shuttles and its advancements pdf
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I need full abstract and ppt for space shuttle and its advancements.plz send me as soon as possible
16-03-2017, 10:00 AM
Successful exploration of space requires a system that will reliably transport payloads into space and return to Earth; Without subjecting them to an uncomfortable or dangerous environment. In other words, space crafts and their payloads have to be safely reclaimed on land. The space shuttle used in ancient times was not reusable. So NASA invented the reusable space shuttle that could launch like a rocket but deliver and land like an airplane. Now NASA plans to launch a series of airplanes that would replace the space shuttle. At the end of the Apollo space program, NASA officials were watching the future of the US space program. At that time, the rockets used to place astronauts and equipment in outer space were disposable single-firing rockets. What they needed was a reliable but less expensive rocket, perhaps one that was reusable. The idea of a reusable "space shuttle" that could launch like a rocket but deliver and land as an airplane was attractive and would be a great technical achievement.
NASA began design, cost and engineering studies on a space shuttle. Many aerospace companies also explored the concepts. In 1972 NASA announced that it would develop a reusable space shuttle or space transportation program (STS). NASA decided that the shuttle would consist of an orbiter attached to solid rocket propellers and an external fuel tank because this design was considered safer and more cost-effective. At that time, the spacecraft used ablative heat shields that would burn as the spacecraft re-entered the Earth's atmosphere. However, to be reusable, a different strategy would have to be used. Space shuttle designers came up with the idea of covering the space shuttle with many ceramic insulation tiles that could absorb the heat of re-entry without harming the astronauts.
Finally, after many years of construction and testing (ie orbiter, main engines, external fuel tank, solid rocket propellers), the shuttle was ready to fly. Four ferries were made (Columbia, Discovery, Atlantis, Challenger). The first flight was in 1981 with the space shuttle Columbia, piloted by the astronauts John Young and Robert Crippen. Columbia performed well and the other ferries soon made several successful flights.
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