hydraulic power unit

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• Auxiliary power unit — An auxiliary power unit (APU) is a device on a vehicle whose purpose is to provide energy for functions other than propulsion. Different types of APU are found on aircraft, as well as on some large ground vehicles.AircraftFunctions of APU The… …   Wikipedia

• Emergency power unit — An emergency power unit (EPU), also called an emergency power supply unit (EPSU), is a device for energy production in case of failure of the primary systems. For example, the EPU used in the F 16 aircraft employs a gas turbine powered by the… …   Wikipedia

• auxiliary power unit — A power generation unit for operation of systems like hydraulic, air conditioning, electrical, and avionics. It may provide AC (alternate current) or DC (direct current) supply. The APU is normally used prior to starting the aircraft and for… …   Aviation dictionary

• emergency power unit — Any source of hydraulic or electric power that permits controlled flight in glide subsequent to engine failure …   Aviation dictionary

• Power steering — helps drivers steer vehicles by augmenting steering effort of the steering wheel. It does this by adding controlled energy to the steering mechanism, so the driver needs to provide only modest effort regardless of conditions. In particular, power …   Wikipedia

• Hydraulic fluid — Hydraulic fluids are a large group of fluids used as the motive medium in hydraulic machinery. Fluid types include synthetic compounds, mineral oil, water, and water based mixtures. The fluids are found in machinery and equipment ranging from… …   Wikipedia

• Power transmission — is the movement of energy from its place of generation to a location where it is applied to performing useful work.Power is defined formally as units of energy per unit time.In SI units: 1 watt = 1 joule/s = 1 newton * metre/second… …   Wikipedia

• airborne/auxiliary power unit — A unit designed to provide pneumatic, hydraulic, and electrical power for main engine starting and aircraft services on the ground and as an emergency source during the flight. It consists of a small gas turbine engine, designed so that the… …   Aviation dictionary

• Power Transfer Unit — The purpose of the Power Transfer Unit (PTU) is to produce hydraulic pressure in the left hydraulic system in the event of a left hydraulic system engine driven pump failure.The PTU is used when there is right hydraulic system pressure but no… …   Wikipedia

• Hydraulic drive system — A hydraulic or hydrostatic drive system or hydraulic power transmission is a drive or transmission system that makes use of a hydraulic fluid under pressure to drive machinery.Such a system basically consists of: *Generator part of the… …   Wikipedia

• Hydraulic brake — The hydraulic brake is an arrangement of braking mechanism which uses brake fluid, typically containing ethylene glycol, to transfer pressure from the controlling unit, which is usually near the operator of the vehicle, to the actual brake… …   Wikipedia