Definition of VIFF in English:

VIFF

Syllabification: VIFF
(also viff)
Aeronautics , • informal

noun

  • A technique used by a vertical takeoff aircraft to change direction abruptly by altering the direction of thrust of the aircraft’s jet engines.

verb

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  • (Of a vertical takeoff aircraft) change direction by altering the thrust of the aircraft’s jet engines.
    More example sentences
    • Harrier pilots do use the nozzles in air combat but I don't think to the extent viffing requires.
    • Plaguewyrm 1 viffed to the right, underbelly thrusters bringing it in line to the Thunderbolt it was tailing.
    • We use viffing, but it's more of a last-ditch than a standard manoeuvre.

Origin

1970s: acronym from vectoring in forward flight.

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