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bypass ratio

   Also found in: Acronyms, Wikipedia 0.01 sec.
bypass ratio
n
(Engineering / Aeronautics) Aeronautics the ratio of the amount of air that bypasses the combustion chambers of an aircraft gas turbine to that passing through them


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Apr 14, 2009 Europe's environmental engine targets for 2020 can be met using engines with a bypass ratio of 14, according to an analysis tool developed for the European Union's Environmentally Friendly Aero-engine (Vital) project.
Put simply, open-rotor engines have a higher bypass ratio than turbofans or turbojets for an equivalent-sized device.
Many new turbofan engine designs just coming into production also use very high bypass ratios for increased fuel efficiency, but the propfan is still about 25 percent more efficient than these, Hanson says.
 
 
 
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