英和和英

出典:『Wikipedia』 (2010/12/31 14:04 UTC 版)

英語による解説

引用

When constructing equipment for a space mission, it is common to build a copy of each piece of equipment. This is known as the flight spare. This is built to the same specifications as the original equipment (the "flight model") and can be substituted in the case of damage or other problems with the flight model, reducing launch delays. The extra cost of building a flight spare can be justified by the enormous cost of delaying a launch even by a short amount of time.