absolute aerodynamic ceiling


absolute aerodynamic ceiling
The altitude at which an aircraft’s maximum rate of climb falls to zero under specified conditions. This is the greatest height achievable except during a zoom climb. The usual conditions are ISA (international standard atmosphere); 1 g, specified weight; and pressure altitude. At this altitude, the power-available curve just about touches the power-required curve, meaning there is no reserve of power available to permit any climb. Also called absolute ceiling.
Reserve of power reduces with increase in altitude till it is zero at absolute aerodynamic ceiling.

Aviation dictionary. 2014.

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