ram-air turbine

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ram-air turbine

n
(Aeronautics) a small air-driven turbine fitted to an aircraft to provide power in the event of a failure of the normal systems
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References in periodicals archive ?
The Ram Air Turbine (RAT) System will provide power to the aircraft in the event of an emergency.
The company and its subsidiaries supply a range of systems for this multipurpose new-generation airlifter, including the A400M's Auxiliary Power Unit, Secondary Electrical Power Distribution Center, Ram Air Turbine emergency power system, Trimmable Horizontal Stabilizer Actuator, Throttle Control Assembly, Cockpit and Load Master Workstation Lighting.
Hamilton Sundstrand supplies the A400M's Secondary Electrical Power Distribution Center (SEPDC), Auxiliary Power Unit (APU) and Ram Air Turbine (RAT) emergency power system.
The company is supplying a variety of products for the 747-8, including the cabin pressure control system, the electric power system, emergency ram air turbine system, auxiliary power unit and emergency signage, as well as fire detection and overheat systems, supplied by Hamilton Sundstrand subsidiary, Kidde Aerospace.
In-flight hose and drogue refueling system (including the centre line hose drum unit, wing aerial refueling pod with RAM Air Turbine, wing pylon and associated computing)
These include: engines, electrics, Ram Air Turbine (RAT), landing gear and braking, fuel and cabin pressurization as well as a preliminary assessment of the autopilot and auto-land functions.
If in the very unlikely event of all four generators were to fail and the auxiliary power unit generators were also to fail, we have a device called RAM air turbine which deploys to supply back-up electrical power.
In addition to the propeller system, Hamilton Sundstrand and its subsidiaries supply the A400M's Secondary Electrical Power Distribution Centre (SEPDC), Auxiliary Power Unit (APU), Ram Air Turbine (RAT) emergency power system, Trimmable Horizontal Stabilizer Actuator (THSA) and the Throttle Control Assembly (TCA).