VNAV
From Wikipedia, the free encyclopedia
Vertical NAVigation in aviation is a function of autopilot which directs vertical movement of aircraft either according to pre-programmed FMS flight plan during cruise or according to ILS glideslope during approach.
VNAV in the sense that the FMS directs altitude according to a flight plan was first introduced on B757 and B767 in 1982, while Autoland (using ILS guidance) has been available since mid-20th century.
[edit] See also
LNAV, RNAV, Navigation.
[edit] External links
http://www.ae.gatech.edu/people/jpclarke/cda/workshop2/presentations/Miller.pdf
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