critical altitude

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critical altitude [′krid·ə·kəl ′al·tə‚tüd]

(aerospace engineering)

The maximum altitude at which a supercharger can maintain a pressure in the intake manifold of an engine equal to that existing during normal operation at rated power and speed at sea level without the supercharger.

(ordnance)

The maximum altitude at which the propulsion system of a missile performs satisfactorily.

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The height at which sprites spark to life also roughly agrees with what theorists like Pasko estimate to be the critical altitude for breakdown.

The Importance of Being Electric by BAKER, OLIVER / Science News

This includes critical altitude information for compliance to new mandatory reduced vertical separation standards (RVSM, Reduced Vertical Separation Minimum), airspeed and altitude as well as engine and fuel data measurements.

U.S. Air Force Selects Innovative Solutions & Support to Replace Air ... by Business Wire

Innovative Solutions & Support, Inc's. Large Flat Panel Display ... by Business Wire

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