constant-speed propeller

constant-speed propeller

[¦kän·stənt ¦spēd prə′pel·ər] (aerospace engineering) A variable-pitch propeller having a governor which automatically changes the pitch to maintain constant engine speed.

constant-speed propeller

A propeller in which the pitch is adjusted automatically, so that the propeller revolves at a given rate dictated by the pilot and remains at that rate irrespective of maneuvers or throttle position. The pitch of the propeller is altered suitably by a centrifugal governor, so that the original RPM is restored if there is any increase or decrease in RPM. A constant-speed propeller retains an efficient angle of attack over a wide forward speed range by altering the blade angle constantly. This type of propeller is used on multiengine aircraft if it is provided with full feathering capability.