| G |
|
|
|
|
g |
the acceleration due to the Earth's gravity; generally employed as a unit
in measuring the nett lift on the aircraft; acceleration during rapid changes
in direction of an aircraft's flightpath |
|
GA |
general arrangement (a three- or four-view drawing of the complete aircraft)
or (2) general aviation |
|
GaAs |
gallium arsenide |
|
GAO |
General Accounting Office (US) |
|
GAPAN |
Guild of Air Pilots And Navigators |
|
GAU |
gun (aircraft) unit (US) |
|
GBU |
glide bomb unit (US) |
|
GCA |
ground-controlled approach (radar) |
|
GCI |
ground-controlled interception |
|
GE |
General Electric |
|
GFE |
government-furnished equipment |
|
GFRP |
glass-fibre reinforced plastic |
|
GGS |
gyro gunsight |
|
GIAT |
Groupement Industriel
des Armaments Terrestres (France)
|
|
GIFAS |
Groupement des
Industries Françaises Aéronautiques et Spatiales (France's aerospace
manufacturers' association)
|
|
GLCM |
ground-launched cruise missile |
|
glide ratio |
distance travelled along track divided by height lost, unpowered, in still
air |
|
glideslope |
descent path guidance element of an ILS |
|
glove |
fixed-portion
immediately inboard of a variable-geometry wing |
|
GmbH |
Gesellschaft mit
beschraenkter Haftung (German: limited liability company)
|
|
GMT |
Greenwich Mean Time |
|
GNS |
global navigation system |
|
GP |
general purpose |
|
GPI |
glide path indicator |
|
GPMG |
general-purpose machine gun |
|
GPS |
(formerly Navstar) Global Positioning System (US-DoD) |
|
GPU |
(1) ground power unit or (2) Gun Pod Unit |
|
GPWS |
ground-proximity warning system |
|
GR |
Ground Attack Reconnaissance (UK) |
|
Grandfather rights |
award of permanent certificates to US domestic airlines in June 1940 for
all their existing route networks |
|
GRD |
Gruppe für Rüstungsdienste
(Swiss)
|
|
green aircraft |
completed airframe fresh from factory, flyable but only basically equipped,
without paint and interior furnishings |
|
GRP |
glass-reinforced plastic |
|
GS |
ground speed |
|
GSE |
ground support equipment |
|
GSh |
Gryazev-Shipunov (Russian gun designers) |
|
GTS |
gas turbine starter |
|
GW |
guided weapon |
| |
|
| H |
|
| |
|
|
HAAC |
helicopter air-to-air combat |
|
HAARS |
High-Altitude Airdrop Resupply System |
|
HADAS |
Helmet Airborne Display and Sight |
|
HADS |
Helicopter Air Data System |
|
HAECO |
Hong Kong Aircraft Engineering Co Ltd |
|
HAI |
Hellenic Aerospace Industry Ltd |
|
HAL |
Hindustan Aeronautics Ltd (India) |
|
HALE |
high altitude, long endurance |
|
HALO |
(1) high altitude, low observable, (2) high altitude, low opening (parachute)
|
|
HAMC |
Harbin Aircraft Manufacturing Co (China) |
|
HAP |
Hélicoptère d'Appui
Protection (France, Eurocopter Tiger variant)
|
|
HAR |
helicopter, search and rescue (UK) |
|
hardened |
(relating
to airfield buildings) afforded maximum protection against effects of nuclear
blast |
|
hardpoint |
reinforced load-bearing portion of aircraft to which weapons or stores can
be attached |
|
HARM |
High-speed Anti-Radiation Missile (Texas Instruments AGM-88) |
|
HARS |
heading/attitude reference system |
|
HARV |
High-AOA Research Vehicle (F/A-18 mod) |
|
HAS |
hardened aircraft shelter |
|
HASC |
House Armed Services Committee (US) |
|
HC |
Helicopter, Cargo (UK) |
|
HDD |
head-down display |
|
HDU |
hose drum unit (in relation to in-flight refuelling equipment) |
|
HE |
high explosive |
|
head-down display |
display on cockpit instrument panel, as distinct from HUD |
| HEAVY |
'Heavy'
is not an acronym as such, but is used reguarly in radio transmissions to
air traffic control merely to indicate that a commercial flight is being
operated by a large or widebodied aircraft such as the Boeing 747, McDonnell
Douglas DC-10, MD-11 etc. |
|
HEL |
high energy laser |
|
helicopter |
rotary-wing aircraft in which engine power is applied to a substantially
horizontal rotor (or rotors), which provide both lift and propulsion |
|
HF |
high frequency |
|
HIFR |
hover in-flight refuelling |
|
HI-LO-HI |
mission profile with high level ingress, low-altitude attack and high-level
egress |
|
HiMAT |
Highly Manoeuvrable Aircraft Technology (Rockwell/USAF/NASA programme) |
|
HIRSS |
hover infra-red suppression system |
|
HLH |
heavy-lift helicopter |
|
HMD |
helmet-mounted display |
|
HMG |
Her Majesty's Government (UK) |
|
HMP |
Heavy Machine-gun Pod (FN Herstal) |
|
HMS |
(1) Her Majesty's Ship (RN) or (2) helmet-mounted sight |
|
HMSC |
Hughes Missile Systems Company |
|
HOCAC |
hands-on cyclic and collective (relating to helicopters) |
|
homebuilt |
aircraft designed to be built or assembled from plans or kits by an amateur
constructor |
|
HOT |
Haut subsonique
Optiquement Teleguidé tiré d'un tube (high subsonic, optically-guided,
fired from a tube -- helicopter-carried anti-tank missile)
|
|
hot and high |
combination of altitude and high ambient temperature which has an adverse
effect on take-off performance |
|
HOTAS |
hands-on throttle(s) and stick (describes the location of essential fighter
controls to minimise hand movement during combat) |
|
HOTOL |
horizontal take-off and landing |
|
hovering ceiling |
height at which air density is such that rate of climb of a helicopter becomes
zero |
|
hp |
horsepower |
|
HP |
high pressure |
|
HQ |
headquarters |
|
HS |
Helicopter Squadron (USAF) |
|
HSCT |
High-Speed Commercial Transport |
|
HSI |
horizontal situation indicator |
|
HSS |
Helicopter Support Ship |
|
HTOVL |
horizontal take-off, vertical landing |
|
HUD |
head-up display |
|
HUDWAC |
head-up display and weapon-aiming computer |
|
HUDWASS |
head-up display weapon aiming sub-system |
|
HUMS |
health and usage monitoring system |
|
HVAR |
High Velocity Aircraft Rocket (USN Zuni) |
|
HVM |
HyperVelocity Missile (Loral Vought Systems) |
|
HySTP |
Hypervelocity System Technology Program (USAF/NASA) |
|
Hz |
Hertz (ie, cycle per second) |
| |
|
| I |
|
| |
|
|
IADS |
integrated air defence system |
|
IAI |
Israel Aircraft Industries Ltd |
|
IAP |
International AirPort |
|
IAS |
indicated airspeed |
|
IATA |
International Air Transport Association |
|
ICAO |
International Civil Aviation Organisation |
|
ICBM |
inter-continental ballistic missile |
|
ICE |
Improved Combat Efficiency |
|
ICNIA |
Integrated Communications, Navigation and Identification Avionics (USAF/USN)
|
|
ID |
Identification |
|
IDF |
(1) Indigenous Defence Fighter (Taiwan) or (2) instantaneous direction finder
|
|
IDS |
Interdictor/Strike (Tornado variant) |
|
IFALPA |
International Federation of Air Line Pilots Associations |
|
IFF |
identification, friend or foe |
|
IFR |
(1) instrument flight rules or (2) in-flight refuelling |
|
IFTU |
Intensive Flying Trials Unit (UK) |
|
IGE |
in ground effect (helicopter hovering performance just above a theoretical
flat horizontal surface) |
|
IHPTET |
Integrated High Performance Turbine Engine Technology (DoD/NASA) |
|
IIR (I2R) |
imaging infra-red |
|
ILS |
instrument landing system |
|
IMC |
instrument meteorological conditions |
|
IMINT |
imagery intelligence |
|
IMN |
indicated Mach No |
|
Imp gal |
Imperial gallon (approx 1.20 US gal, 4.546 litres) |
|
INAS |
integrated nav/attack system |
|
incidence |
angle at which wing is set to the fore/aft axis |
|
INEWS |
INtegrated Electronic Warfare System (USAF/USN) |
|
INF |
intermediate range nuclear forces |
|
INS |
inertial navigation system -- method of measuring all accelerations imparted
by an aircraft and integrating them with respect to time to give a continuous
read-out of velocity and with a second time integration also giving present
position relative to the point of origin |
|
integral construction |
machined
from solid rather than assembled from separate parts |
|
integral tank |
one
formed by coating a part of the aircraft structure with sealant |
|
interdiction |
attack
on targets deep inside enemy territory (but not of a strategic nature) |
|
IOC |
initial/interim operational capability |
|
IOR |
Immediate Operational Requirement |
|
IP |
(1) initial point (a check-point from which the bearing and distance to
the target is known) or (2) instructor pilot or (3) intermediate pressure
|
|
IPTN |
PT Industri Pesawat
Terbang Nusantara (Indonesia)
|
|
IR |
infra-red |
|
IRADS |
Infra-Red Acquisition and Detection System (Texas Instruments, for F-117A)
|
|
IRAN |
inspect and repair as necessary (US) |
|
IRCCM |
infra-red counter countermeasure |
|
IRCM |
infra-red countermeasures |
|
IRLS |
infra-red linescan |
|
IRS |
inertial reference system |
|
IRST |
infra-red search and track |
|
IRWR |
Infra-red warning receiver |
|
ISA |
International Standard Atmosphere |
|
ISAR |
inverse synthetic-aperture radar |
|
ISD |
in service date |
|
ISO |
International Standardisation Organisation |
|
ITP |
(1) Intent To Purchase or (2) Instruction to Proceed |
|
ITT |
invitation to tender |
|
IUKADGE |
Improved United Kingdom Air Defence Ground Environment |
|
IVS |
interactive voice system |
|
IWS |
Integrated Weapon System |
