Ram air turbine

Ram air turbine on a Republic F-105 Thunderchief fighter-bomber

A ram air turbine (RAT) is a small wind turbine that is connected to a hydraulic pump, or electrical generator, installed in an aircraft and used as a power source. The RAT generates power from the airstream by ram pressure due to the speed of the aircraft. It may be called an air driven generator (ADG) on some aircraft.[1]

  1. ^ "Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes". Federal Aviation Administration (FAA). 2009.