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gust loading
between maximum gust and lull expressed as percentage
of mean wind.
gust loading Increased structural loads caused by gust
(1, 2).
gust locks Particular control locks preventing movement
of flight controls of parked aircraft.
gust response Aircraft encountering gust (1, 2) experiences
vertical acceleration made more severe by high
speed, low wing loading (esp. large span, discounting
flexure effect of wing) and some other factors. Normal
measure of ** is number of 0.5 g vertical accelerations
experienced by pilot’s seat per minute under specified
conditions at high (Mach 0.9) speed at low level.
Guti Rare clag in Zimbabwe.
gutter Afterburner flameholder having cross-section
generally in form of V, open side to rear, to create strong
turbulence sufficient to keep flame attached; see vapour *.
Guttman Original scaling technique used to assess
community noise response assuming that any positive
answer implies positive answer to all questions of lower
order; final Guttman scale is normally: no action; sign
petition; attend meeting; contact officials; visit officials;
help organize action group.
GUVVF Chief Administration of Air Fleet (USSR).
GV Grivation.
GVC Girls Venture Corps; -AC or (AC) adds Air
Cadets [1939–, incorporates WJAC; office Sheffield S9
1UD] (UK).
GVE Graphics vector engine.
GVF Civil Air Fleet (USSR, R).
GVI General visual inspection.
G/VLLD Ground/vehicle laser locator designator.
GVLS Ground vortex length scale.
GVPF Geared variable-pitch fan.
GVR Gross vehicle weight [airport vehicle].
GVRC GPS volume receiver card.
GVS 1 Ground velocity subsystem.
2 Global voice service.
GVSC Generic VHSIC spaceborne computer (USAF).
GVT Ground vibration test(s).
GVW Gross vehicle weight.
GW 1 Guided weapon.
2 Groundwave.
3 Gateway.
G w In a flight-control system [for example] a washout
filter.
GWAI George Washington Aviation Institute
[Ashburn, VA] (US).
GWAC Government-wide acquisition contract [2007–]
(US).
GWIB Guy way in back [GIB1 more common].
GZ
GWIS Generic weapon interface system.
GWEN, Gwen Groundwave emergency network.
GWJ Garnet water jet for high-rate cutting of hard
metals.
GWM Guam missile/space station.
G-WOE Global war on error.
GWOT, G-WOT Global war on terrorism.
GWS 1 Guided weapon system (RN).
2 Graphical weather service.
GWT Gross weight.
GWVSS Ground wind vortex sensing system.
G x Gain of transponder RF amplifier.
G xyz Shear modulus of a composite panel with fibres
crossing at 45°.
gyro Gyroscope.
gyro angling gain CG = H/c, H sense (7).
gyrocompass Compass based upon space-rigidity of
gyroscope; no true long-term instrument exists but see
directional gyro and Gyrosyn, and sensing element of fluxgate
compass is gyro-stabilized.
gyrocopter Autogyro (US).
gyrodyne Aerodyne having engine power transmitted to
lifting rotor(s) and propeller(s) used for thrust; convertiplane
has wing in addition.
gyrograph Graphical plot of gyro drift against time.
gyro gunsight Sight for fixed guns using one or more
gyros (and RAE-developed Hooke’s joint with two
degrees of freedom) to provide automatic lead computation
by measuring rates of sightline spin while remaining
insensitive to rotation about sight axis itself caused by roll
of host aircraft).
gyrohorizon See artificial horizon.
gyro log Form used to calculate and record gyro drift
and drift rate (ASCC).
gyromagnetic compass Directional gyro whose azimuth
datum is maintained aligned with magnetic meridian by
precession torquing from magnetic detector.
gyropilot See autopilot.
gyroplane Becoming a common US term for an autogyro.
gyroscopic manoeuvre Flight manoeuvre by aerodyne in
which the aircraft tumbles, rotating about all three axes
but capable of controlled recovery.
gyrostabilized Held in fixed attitude relative to space,
subject to precession and wander.
gyrostat Hughes-developed technique for satellites of
great length spinning about minor axis.
Gyrosyn Registered name for gyrosynchronized
compass comprising DI (2) slaved to magnetic meridian
by fluxgate.
gyro time constant GTC = J/c.
gyro vertical Local vertical indicated by vertical gyro.
GZ Ground zero.
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