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.
VERTICAL NAVIGATION (VNAV)- A function of area navigation (RNAV) equipment which calculates, displays, and provides vertical guidance to a profile or path.
VNAV
Vertical navigation, or the capability to compute pitch-axis maneuvers and altitude-related points in space.
VNE
Never Exceed Speed ...
Vnav - vertical navigation.
Volmet - continuous recorded broadcasts of weather conditions at selected airfields.
WAAS was developed beginning in 1995 by the FAA in an effort to move GPS navigation toward a point at which it could provide ILS-type approaches (precision lateral and vertical navigation) to aviation users.
GPS (with vertical navigation via WAAS or EGNOS) - Global Positioning System
LAAS - Ground Based Augmentation System (GBAS) for Global Satellite Navigation Systems (GNSS)
JPALS - Joint Precision Approach and Landing System ...
VNAV: Vertical Navigation
VOR: Very high frequency Omnidirectional Range. A radio navigation aid operating in the 108-118 MHz band. A VOR ground station transmits a two-phase directional signal through 360°.
 See also: Aircraft, Navigation, Flight, Weather, VOR
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