“jetavator”的英文意思_释义_用法

单词

jetavator

释义

jetavator Astronautics.|ˈdʒɛtəveɪtə(r)|
Also jetevator.
[f. (irreg., in the case of jetavator) jet n.³ + elevator.]
A ring-shaped deflector surrounding the exit nozzle of a rocket engine which can be swivelled into the exhaust gases to divert them and so alter the direction of the thrust.
1960Aeroplane XCVIII. 176/2 The missile is powered by a solid-propellent Aerojet rocket motor fitted with ‘jetavator’ deflectors of the kind developed for Polaris.1961Flight LXXIX. 13/2 The use of swivelling nozzles is claimed to be lighter than the Polaris system of fixed nozzles plus jetevators, and undoubtedly minimizes drag.1967Propulsion (Amat. Rocket Assoc. U.S.) ii. 45 A jetavator consists of a ring surrounding the exhaust-nozzle exit. The ring is mounted so that it can be moved into the jet exhaust as needed.

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