specific impulse

specific impulse

 
noun 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.
Also called specific thrust.

Origin:
1945–50
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Specific impulse is always a great word to know.
So is callithumpian. Does it mean:
a gadget; dingus; thingumbob.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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Collins
World English Dictionary
specific impulse
 
—n
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

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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