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Goldstone
of the induced velocity and the velocities of rotation and
forward motion.
Goldstone DSIF stations NE of Barstow, CA.
golf ball Turbulence control structure.
GoMats Gulf of Mexico advanced traffic surveillance.
gondola Car of airship.
gong Medal or decoration (RAF colloq.).
gonio VHF/DF (F).
goniometer 1 Instrument for measuring angles between
reflecting surfaces of crystal or prism.
2 Electrical transformer used with fixed and rotating
aerials for determining bearing of radio station.
3 Motor-driven instrument used with four stationary
aerials to deliver rotating signal field for VOR.
go/no-go Step-by-step basis on which manned spaceflights
are flown, with flight crew and mission control
jointly making positive decision whether to continue into
each new phase of mission.
go/no-go check list Written guide for flight crews to
determine go/no-go situation on any given subsystem
deficiency (USAF).
go/no-go gauge Dimensional gauge for checking
whether part is within upper and lower tolerance limits.
Go-NoGo Line Geographical line beyond which aircraft
carrying live NW could penetrate only after receipt of
Positive Release Message [in case of RAF 1953–80 this
was 8°E longitude].
go/no-go test equipment Provides only one of two
alternative answers to any question, eg whether given
signal is in or out of tolerance.
good engine One that continues to operate after other[s]
failed.
Goodman diagrams Various graphical plots used to
determine parts life under repeated cyclic loads, most
common having per cent alternating stress/endurance
strength as ordinate and per cent mean stress/rupture
strength as abscissa.
good parachute Fully and correctly deployed.
Goodrich de-icer Original patented pulsating rubber deicer
for leading edges, intermittently inflated with air to
break up ice.
Goodrich rivnut See Rivnut.
goofers Audience on island of carrier.
goolie chit Written promise of reward if downed aircrew
member is returned intact [UK Imperial, esp. North West
Frontier, 1920–50].
goon Guard at PoW Stalag Luft (RAF WW2).
gooseneck flare Type of runway flare mounted on
slender stem designed to bend easily if struck by aircraft.
GOPS, Gops Giga [10 9 ] operations per second.
GOR 1 General Operational Requirement.
2 Guy on the right, in side-by-side military aircraft,
normally navigator or electronic-warfare officer.
3 Ground occurrence report.
Gorac Ground collision-avoidance system operational
requirements and certification (Euret).
gore 1 Shaped sector of parachute canopy normally
bounded by two adjacent rigging lines.
2 Shaped section of airship envelope or gas bag, or
balloon envelope.
3 Radial panel in airframe, esp. pressure bulkhead,
hence * panel, * diaphragm.
GOS 1 General operator station.
2 Grade of Service.
GPIAA
3 Gate-operating system.
4 Global observing system.
Gosat Greenhouse-gases observing satellite.
GOSC General Officer Steering Committee.
Gosip Government open-systems interconnection
profile.
GosNII State scientific research institute (USSR, R); -A
or Aeronavigatsiya adds ATC/navigation/landing aids;
-AS adds avionics; -GA adds all aspects of civil aviation;
PAS adds ground test of aircraft systems.
Gospar State commission for space research (R).
Gosport tube Flexible speaking tube used in tandem
open-cockpit trainers connecting instructor’s mouthpiece
with pupil’s helmet or vice versa.
Gost State research institute for fuels and lubricants
(USSR, R).
Gothic-arch bearing Becoming the preferred type of ball
bearing in gas-turbine mainshafts, this runs the balls
between races each formed from two radii struck from
slightly different centres.
Gothic delta Wing whose basic triangular shape is modified
to resemble Gothic window; also known as ogival
delta.
GOTS Government off the shelf.
Göttingen-type tunnel Wind tunnel with return-flow
circuit but open working section.
GO 2 Gaseous oxygen.
Gouge flap Flap whose upper surface forms part of
cylindrical surface; thus as flap rotates immediate movement
is rearwards to increase area.
GOX, gox Gaseous oxygen.
GoXML Universal meta-language converting almost
any data format into XML and back.
GP 1 General purpose (bomb, or former RAF
squadron role prefix).
2 Glove pylon.
3 Geographical position.
4 Glidepath.
Gp Group.
GPa Gigapascal.
GPADIRS Global positioning air-data inertial reference
system [U adds unit or replaces system, GPIRS omits
AD].
GPADS Guided-parafoil aerial [or air or airborne]
delivery system.
GPALS Global protection against limited strikes.
GP&C Global positioning and communications.
GPB Ground-power breaker.
GPBC Gold-plated beryllium copper.
GPC Government Procurement Code (US).
GPCDU General-purpose control and display unit.
GPCU Ground-power control unit.
GPDC General-purpose digital computer.
GPEP Global-positioning experiments program.
GPES Ground-proximity extraction system.
GpFL Group flashing light.
gph, GPH Gallons per hour.
GPI 1 Ground-positioning indicator.
2 Ground point of interception.
3 Glide-path indicator.
4 Global positioning inertial; N adds navigation, RS
reference system, RU reference unit, SS sensor system.
5 Gas-penetrant imaging, or inspection.
GPIAA Accident-investigation authority (Portugal).
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