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Definition of Specific Impulse

Published online by Cambridge University Press:  28 July 2016

Extract

In Rocketry, the definition of Specific Impulse is given variously as Thrust per unit mass of propellants consumed per second and Thrust per unit weight of propellants consumed per second. The second definition is convenient in giving units in seconds, but is unsatisfactory in that the weight of a given mass of propellants depends upon gravitational attraction, and decreases with altitude.

Type
Technical Notes
Copyright
Copyright © Royal Aeronautical Society 1953

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References

1. Perring, W. G. A. (1946). A Critical Review of German Long-Range Rocket Development. Journal of the Royal Aeronautical Society, July 1946.Google Scholar
2. Cleaver, A. V. (1951). Rockets and Assisted Take-Off. Journal of the Royal Aeronautical Society, February 1951.CrossRefGoogle Scholar
3. Diplock, B. R. and others (1953). Liquid Propellant Rocket Motors. Journal of the Royal Aeronautical Society, January 1953.CrossRefGoogle Scholar