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VIFF Line breaks: VIFF
(also viff) Aeronautics , informal

Definition of VIFF in English:


[mass noun]
A technique used by a vertical take-off aircraft to change direction abruptly by altering the direction of thrust of the aircraft’s jet engines.


[no object] Back to top  
(Of a vertical take-off aircraft) change direction by altering the direction of thrust of the engines: the VSTOL Harrier with its ability to viff
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.


1970s: acronym from vectoring in forward flight.

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