送交者: steven 于 2005-10-17, 12:47:43:
回答: “太空梭”是个错误的工程设计。 由 mirror 于 2005-10-17, 12:17:07:
The Shuttle program started in late 60s, as part of the space exploration to build space station and eventually put human on Mars which started long before Reagen took office. Due to budget cut, shuttle was the only thing left. The frist lunch was 1981 when Reagan was just elected. The SDI or Star Wars was first proposed in 83. As for "principle," all spacecrafts are based on Newtonian mechanics, what kind of revolution you want? A wrap drive?