| WAC |
Weapon aiming computer |
| WARPAC |
Warsaw Pact (defunct) |
| WAS |
Weapon aiming system |
| wash-in |
In-built twist in wing or rotor increasing angle
of incidence towards tip |
| wash-out |
In-built twist in wing or rotor decreasing angle
of incidence towards tip |
| watt |
Unit of power (= 1J/s) (SI) |
| waypoint |
Predetermined geographical point forming
beginning or end of a route segment |
| WDNS |
Weapon delivery and navigation system |
| WEF |
With effect from |
| wet lease |
Lease of commercial aircraft from another
carrier including at least flight crew but |
|
usually not the cabin crew; major service still
provided by owner |
| wet wing |
Wing in which fuel tanks are integral part of
the structure |
| WEU |
Western European Union |
| WFU |
Withdrawn from use |
| wheelbase |
Distance between centre of nosewheel or
tailwheel and line joining centre of |
|
mainwheels |
| white-tail |
Unsold or presently not leased aircraft
available for immediate lease/sale |
| wide body |
Commercial aircraft with cabin large enough to
accomodate two aisles |
| WIG |
Wing-in-ground-effect |
| Wild Weasel |
Nowadays used as a generic term for dedicated EW
platform based on combat |
|
aircraft; originally code name for specific USAF
program |
| wing area |
Total area of clean wing and area of fuselage
within projected leading edge and |
|
trailing edge |
| winglet |
Wingtip which is turned up; increases efficiency
of by reducing tip vortex |
| wing loading |
MTOW divided by wing area |
| WIP |
Work in progress |
| W/O |
Written-off |
| WIU |
Weapons interface unit |
| WOD |
Wind over deck (on aircraft carrier) |
| WRAF |
Women's Royal Air Force (UK) |
| write-off |
An aircraft which has been so severely damaged
as to make repair uneconomical |
| WRS |
Weather Reconnaissance Squadron (USAF) |
| WSI |
Windshear indicator |
| WSO |
Weapon system operator also:
weapon systems officer |
| WW |
World War |