jet-propulsion efficiency

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

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• 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 performance — This article describes how jet engine performance is estimated during the design phase. Similar techniques are used once the engine has been built and is being tested, except the performance of individual components, rather than being assumed, is …   Wikipedia

• Jet airliner — A jet airliner, sometimes contracted to jetliner, is a passenger airplane (passenger aeroplane) that is powered by jet engines. In contrast to today s long distance quiet, fuel efficient, and modern turbofan powered air travel, first generation… …   Wikipedia

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• Timeline of jet power — This article outlines some of the important developments in the early history of the development of the jet engine. Although the most common type, the gas turbine powered jet engine, was certainly a 20th century invention, many of the needed… …   Wikipedia

• Fuel efficiency in transportation — This page describes fuel efficiency in means of transportation. For the environmental impact assessment of a given product or service throughout its lifespan, see life cycle assessment. Caveats Comparing Fuel efficiency in transportation is a bit …   Wikipedia

• Pulse jet engine — A pulse jet engine (or pulsejet) is a very simple form of internal combustion engine based jet engine where combustion occurs in pulses. A typical pulsejet comprises an air intake fitted with a one way valve, a combustion chamber, and an… …   Wikipedia

• Airbreathing jet engine — An airbreathing jet engine (or ducted jet engine) is a jet engine propelled by a jet of hot exhaust gases formed from air that is drawn into the engine via an inlet duct. All practical airbreathing jet engines are internal combustion engines that …   Wikipedia

• Marine propulsion — For the operation of ship engines, see Engine department (ship). For the design of ships, see Naval architecture. A view of a ship s engine room Marine propulsion is the mechanism or system used to generate thrust to move a ship or boat across… …   Wikipedia