Noun
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.
All the air ingested by the inlet is passed through the compressor, combustor, and turbine, unlike the turbofan engine described below. Source: Internet
Brown 1970, p. 71. The Harrier is powered by a single Pegasus turbofan engine mounted in the fuselage. Source: Internet
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. Source: Internet
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. Source: Internet
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). Source: Internet
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. Source: Internet