| 单词 | specific impulse |
| 释义 | specific impulse in British Englishnoun the ratio of the thrust produced by a rocket engine to the rate of fuel consumption: it has units of time and is the length of time that unit weight of propellant would last if used to produce one unit of thrust continuously specific impulse in American Englishnoun (in rocketry) 1. a measure, usually in seconds, of the efficiency with which a rocket engine utilizes its propellants, equal to the number of pounds of thrust produced per pound of propellant burned per second 2. the specific impulse that a given combination of propellants would produce in an ideal rocket engine providing complete combustion, no friction losses, and no lateral expansion of the exhaust Word origin [1945–50]This word is first recorded in the period 1945–50. Other words that entered Englishat around the same time include: beeper, ergative, poison pill, spin-off, synchronized swimmingExamples of 'specific impulse' in a sentence |
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