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按照科学家的设计,每架航天飞机都可以在地球和太空之间往返75-100次,但是,每次它由太空进入大气层,都会因为与空气剧烈摩擦而产生大量的热。温度可以高达几千摄氏度,使机身变成一个炽热的火球……那真是惊心动魄的场面啊!为了保证航天员的安全,科学家必须为飞机找到一种既耐高温又不易损坏的“避火衣”。
According to the scientists’ design, each space shuttle can make 75-100 roundtrips between Earth and space. However, each time it enters the atmosphere from space, it will generate a lot of heat because of violent friction with the air. The temperature can be as high as several thousand degrees Celsius, turning the fuselage into a hot fireball... It’s a thrilling scene! To ensure the astronaut’s safety, scientists must find a “safety jacket” that is both high temperature resistant and not easily damaged. ".