turbofan
Noun
Meaning
English Wikipedia has an article on:turbofanWikipedia
turbofan (plural turbofans)
(aviation) A turbojet engine having a (typically ducted) fan that forces air directly into the hot exhaust and obtains a portion of the thrust from the turbojet and a portion from the turbojet section.
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Examples
All the air ingested by the inlet is passed through the compressor, combustor, and turbine, unlike the turbofan engine described below.
Brown 1970, p. 71. The Harrier is powered by a single Pegasus turbofan engine mounted in the fuselage.
As can be seen in the following table, rocket engines generally achieve much higher thrust-to-weight ratios than duct engines such as turbojet and turbofan engines.
Engines and landing gear The F-14 was initially equipped with two Pratt & Whitney TF30 (or JT10A) turbofan engines with each providing a maximum thrust of 20,900 lb (93 kN) and giving the aircraft an official maximum speed of Mach 2.34.
For example, the JT8D, a bypass engine, has a jet velocity of 1450 ft/sec whereas the JT9D, a turbofan, has jet velocities of 885 ft/sec (cold) and 1190 ft/sec (hot).
For main A Pratt & Whitney F100 turbofan engine for the F-15 Eagle being tested in the hush house at Florida Air National Guard base.