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WRA
WRA 1 Weapon replaceable assembly.
2 War Resources Administration (US, WW2).
WRAC Women’s Royal Army Corps (UK 1946–93).
WRAF Women’s Royal Air Force (UK, 1949–94).
WRALC Warner-Robins Air Logistics Center (USAF).
wrap-around Wrap-round.
wrapped connection Not soldered but made by wire
wrapping.
wrapping cord See serving cord.
wrap-round boosts Boost motors, usually four spaced at
90°, arranged around sides of body of missile or test
vehicle and at burnout separated laterally.
wrap-round engine Turboramjet comprising turbojet
core surrounded by separate ramjet duct; differs from
afterburning turbofan in that there is no fan, all burners
are in roughly same axial plane, and in RJ mode core is
shut off.
wrap-round fins Rocket or missile fins which, before
launch, are recessed around the curved body; they open
after launch on hinges parallel to the longitudinal axis.
wrap-round windscreen Manufactured as single blown
or vacuum-formed moulding forming entire front of
cabinm, or cockpit, extending from nose or engine cowl
to behind front seat[s].
wrap-round wing skin Single sheet wrapped around
leading edge and forming upper/lower wing surfaces back
to rear spar.
WRB War Resources Board (US, WW2).
WRCP Weather-radar control panel.
WRCS Weapon-release computer set (USAF).
WRD War-reserve drop-tank (large quantities in store).
WRDA Weapons range danger area.
WRE Weapons Research Establishment [Woomera,
office at Salisbury, South Australia].
Wrebus WRE break-up system; radio-commanded
method of explosively disintegrating errant vehicle.
wreckage field Total area of land or seabed considered
to contain every part of crashed aircraft, especially one
that broke up in flight.
wreckage trail Wreckage field from aircraft which broke
up at high altitude.
Wren[s] See WRNS.
Wright-Patterson AFB Vast complex outside Dayton,
OH, formed by 1948 merger of Wright Field [1917] and
Patterson Field [1931] (USAF).
wring (wringing it) out To demonstrate one’s piloting
skill by flamboyant demonstration intended to push
aircraft (usually training aeroplane) to limits; has overtones
of poor airmanship.
wrinkle Visible buckle in skin.
wrist actimeter Gives alarm if pitch attitude changes,
even slightly, with pilot dozing [interpreted as no wrist
movement in 4 min]; can be set to alarm even with no
aircraft rotation.
wrist pin 1 In UK: attaches radial-engine con-rod (articulated
rod) to master rod; also called knuckle pin. Hence
** end of articulated rod.
2 US : attaches piston to con-rod [in UK called gudgeon
pin].
write In EDP (1), to enter in memory, to record input
information.
WSK
write off To damage an aircraft so severely it is not
judged worth repairing.
write-off 1 An aircraft so severely damaged that repair
is uneconomic.
2 Unobligated balance of funds removed from account
involved.
written off Struck off charge, for reasons of obsolescence,
unrepairable damage, total cannibalization or
destruction in crash; does not include sale or MIA.
WRM 1 War-readiness (or reserve) materiel (USAF).
2 Warm.
WRMFNT Warm front.
WRNG Warning.
WRNS Women’s Royal Naval Service.
WRO Western Range Operations; CI adds communications
and information (VAFB).
wrought Generally, shaped by plastic deformation, eg
by forging or other hot or cold working as distinct from
casting, sintering or machining.
WRP Wing reference plane.
WRR Wide-range ramjet (from 1995, France-Russia).
WRS 1 Word-recognition system.
2 Wide-area reference station (WAAS3).
3 Weather Reconnaissance Squadron.
WRSK War-readiness spares (or supply) kit (USAF).
WRT Weather-radar receiver/transmitter.
WS 1 Weapon system.
2 Weather service (FAA).
3 Water service (cart).
4 Windshear (Sigmet warning).
5 Weather-advisory Sigmet.
6 Wireless School (RFC, RAF).
W/S 1 Warning/status (display).
2 Windscreen.
W s 1 Structure weight.
2 Maximum shoulder width of tyre [tire].
WS 3 See WSSS.
WSADS Wind-supported air, or aerial, delivery system
[for leaflets and similar items] (USA).
WSC 1 Weapon-system controller.
2 World Space Congress (2002).
WSCP Warning-system control panel.
WSCS Weapon-system computational subsystem.
WSD Wind speed and direction (W/V is preferred).
WSDDM Weather support for deicing decisionmaking.
WSDL Weapon-system data-link.
WSDPS Weapon-system design and performance
specification.
WSEG Weapon-systems evaluation group (DoD).
WSEP Weapon-system evaluation program (USAF).
WSF Weapon storage flight (RAF).
WSFO Weather Service Forecast Office (US NWS).
Wsg Maximum growth shoulder width of tyre.
WSHFT Windshift.
WSI 1 Windshear indicator.
2 Water-separometer index (fuel).
WSIM Water-separometer (or separation) index,
modified.
WSOA Wide-swath ocean altimeter.
WSOp WSO(1) in RAF style.
WSIP Weapon[s] system improvement programme.
WSK Wire-strike kit.
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