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2. Power transfer unit - Wikipedia

   en.wikipedia.org/wiki/Power_transfer_unit

   The PTU solves this problem by allowing a rotary mechanical coupling between both systems, so the engine driven pump for the yellow (right hand) system on the starboard engine, which is oversized for normal hydraulic demand, can dump the excess power into the green system via the PTU, and allow powered landing gear retraction to continue, while ...

3. Ram air turbine - Wikipedia

   en.wikipedia.org/wiki/Ram_air_turbine

   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]

4. Accessory drive - Wikipedia

   en.wikipedia.org/wiki/Accessory_drive

   Klimov TV3-117 turboshaft engine. The accessory drive is the large casting on the top. The accessory drive is a gearbox that forms part of a gas turbine engine. [1] Although not part of the engine's core, it drives the accessories – such as generators, pumps for fuel and lubrication oil, air compressors, hydraulic pumps and engine starters – that are otherwise essential for the operation ...

5. Components of jet engines - Wikipedia

   en.wikipedia.org/wiki/Components_of_jet_engines

   A variation of this is the APU installed in a Boeing F/A-18 Hornet; it is started by a hydraulic motor, which itself receives energy stored in an accumulator. This accumulator is recharged after the right engine is started and develops hydraulic pressure, or by a hand pump in the right hand main landing gear well.

6. Lycoming O-435 - Wikipedia

   en.wikipedia.org/wiki/Lycoming_O-435

   Geared engine model which incorporates a dual generator and vacuum pump drive. It produces 260 hp (194 kW) at 3400 rpm for takeoff, with a compression ratio of 7.3:1, a dry weight of 430 lb (195 kg) and fitted with a Marvel MA-4-5 or PS-5BD carburetor. Type certified on February 8, 1955. [1] GO-435-C2B2

7. Woodward, Inc. - Wikipedia

   en.wikipedia.org/wiki/Woodward,_Inc.

   Woodward, Inc. is an American designer, manufacturer, and service provider of control systems and control system components (e.g. fuel pumps, engine controls, actuators, air valves, fuel nozzles, and electronics) for aircraft engines, industrial engines and turbines, power generation and mobile industrial equipment. The company also provides ...