propulsive efficiency

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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

• propulsive — adjective 1. having the power to propel propulsive coefficient • Pertains to noun: ↑propulsion 2. tending to or capable of propelling propellant fuel for submarines the faster a jet plane goes the greater its propulsive efficiency… …   Useful english dictionary

• engine efficiency — The ratio of the propulsive power developed to the fuel power consumed. Specific fuel consumption (SFC) is one of the measures of engine efficiency. Propulsive efficiency of various types of jet engines …   Aviation dictionary

• 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

• 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

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

• Rocket — This article is about vehicles powered by rocket engines. For other uses, see Rocket (disambiguation). A Soyuz U, at Baikonur Site 1/5 A rocket is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engi …   Wikipedia

• Spacecraft propulsion — A remote camera captures a close up view of a Space Shuttle Main Engine during a test firing at the John C. Stennis Space Center in Hancock County, Mississippi Spacecraft propulsion is any method used to accelerate spacecraft and artificial… …   Wikipedia

• 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

• 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