reversible-pitch propeller

reversible-pitch propeller

[ri′vər·sə·bəl ¦pich prə′pel·ər]
(mechanical engineering)
A type of controllable-pitch propeller; of either controllable or constant speed, it has provisions for reducing the pitch to and beyond the zero value, to the negative pitch range.
References in periodicals archive ?
On gas-turbine ships, there are four major types of casualties that could impact flight operations: main engine, reduction gear/ shafting, control reversible-pitch propeller and electrical.
30 OCT 1919 Reversible-pitch propeller demonstrated.