critical altitude


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critical altitude

The altitude beyond which an aircraft or airbreathing guided missile ceases to perform satisfactorily. See also altitude.
References in periodicals archive ?
A turbocharger will easily fix this--at least until you climb beyond the turbo installation's critical altitude.
Depending on the system, the engine either can develop sea level manifold pressure up to a defined altitude--a turbonormalized engine--or it can develop higher-than-ambient manifold pressure at sea level and continue to do so up to the altitude at which the system simply can't compress the ambient air enough and manifold pressure starts to drop--the critical altitude.
Starting the first day of strike training in the training command, we were taught to come off the pickle as soon as you know you can't get the bombs off before this critical altitude.
An altimeter transmitter generates a constant FM period CW signal below a critical altitude and a variable FM period ICW signal above the critical altitude.
The weaker field can trigger breakdown only above a critical altitude.
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.
In flight, one way an exhaust leak will manifest itself is through "bootstrapping"; the engine's manifold pressure will exhibit often-large variations in cruise at or near the engine's critical altitude.
Early on I learned that sinking below a critical altitude is one of the most difficult errors for me to correct.
Technically, the turbonormalized system doesn't have a critical altitude since it boosts to sea-level to the airplane's certificated ceiling of 25,000 feet.
Critical altitude itself is a function of density altitude, so the height at which you can maintain climb power will be lower on a hot day.
This includes critical altitude information for compliance to new mandatory reduced altitude separation standards (RVSM, Reduced Vertical Separation Minimum), airspeed and altitude as well as engine and fuel data measurements.