propulsive efficiency of a propeller

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• Propulsive efficiency — In aircraft and rocket design, overall propulsive efficiency eta is the efficiency, in percent, with which the energy contained in a vehicle s propellant is converted into useful energy, to replace losses due to air drag, or gravity, or to… …   Wikipedia

• propulsive efficiency — The ratio of propulsive power to the rate of increase of kinetic energy by the gas stream. In reciprocating engines, it is the ratio of the thrust horsepower produced by the propeller to the torque horsepower of the shaft turning the propeller.… …   Aviation dictionary

• Propeller — A propeller is essentially a type of fan which transmits power by converting rotational motion into thrust for propulsion of a vehicle such as an aircraft, ship, or submarine through a mass such as water or air, by rotating two or more twisted… …   Wikipedia

• Controllable pitch propeller — A controllable pitch propeller (CPP) or variable pitch propeller is a type of propeller with blades that can be rotated around their long axis to change their pitch. If the pitch can be set to negative values, the reversible propeller can also… …   Wikipedia

• jet engine — an engine, as an aircraft engine, that produces forward motion by the rearward exhaust of a jet of fluid or heated air and gases. Also called jet, jet motor. [1940 45] * * * Any of a class of internal combustion engines that propel aircraft by… …   Universalium

• Jet engine — For a general overview of aircraft engines, see Aircraft engine. A Pratt Whitney F100 turbofan engine for the …   Wikipedia

• Turbofan — [ CFM56 3 turbofan, lower half, side view.] A turbofan is a type of jet engine, similar to a turbojet. It essentially consists of a ducted fan with a smaller diameter turbojet engine mounted behind it that powers the fan. Part of the airstream… …   Wikipedia

• Flight — is the process by which an object achieves sustained movement either through the air (or movement beyond earth s atmosphere, in the case of spaceflight) by aerodynamically generating lift, propulsive thrust or aerostatically using… …   Wikipedia

• Ornithopter — Cybird radio controlled ornithopter Pa …   Wikipedia

• Powered hang glider — A foot launched powered hang glider (FLPHG), also called powered harness, nanolight or hangmotor, is a powered hang glider harness with a motor and propeller in pusher configuration. An ordinary hang glider is used for its wing and control frame …   Wikipedia

• Brake specific fuel consumption — (BSFC) is a measure of an engine s efficiency. It is the rate of fuel consumption divided by the power produced. BSFC is specific for shaft engines such as reciprocating engine. The BSFC Calculation (in metric units) To calculate BSFC, use the… …   Wikipedia