Rocket sled

A rocket sled is a test platform that slides along a set of rails, propelled by rockets.

As its name implies, a rocket sled does not use wheels. Instead, it has sliding pads, called "slippers", which are curved around the head of the rails to prevent the sled from flying off the track. The rail cross-section profile is that of a Vignoles rail, commonly used for railroads.

单词	Rocket sled
释义	Rocket sled 原声例句 PBS趣味科普 Well, in 1954, to test what pilots could endure after ejecting at high speeds, Air Force physician John Stapp shot to 623 miles per hour in five seconds on a rocket sled, and slammed to a stop just one second later. 好吧，在 1954 年，为了测试飞行员在高速弹射后的耐力，空军医生约翰·斯塔普在火箭雪橇上在 5 秒钟内达到每小时 623 英里，一秒钟后猛地停下来。英语百科 Rocket sled A rocket sled is a test platform that slides along a set of rails, propelled by rockets. As its name implies, a rocket sled does not use wheels. Instead, it has sliding pads, called "slippers", which are curved around the head of the rails to prevent the sled from flying off the track. The rail cross-section profile is that of a Vignoles rail, commonly used for railroads.
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