Glossary
Navigating the complex world of aerospace can be daunting, especially when it comes to deciphering the industry's extensive list of abbreviations and technical terms. But fear not, we've compiled a comprehensive guide to help you make sense of it all.
From A to Z, this list of aerospace abbreviations and terms is your one-stop-shop for understanding the lingo used in this dynamic field. Whether you're an industry professional, a student, or simply curious about the aerospace industry, this resource will equip you with the knowledge you need to communicate effectively and stay ahead of the curve.
Explore this alphabetized guide and unlock the secrets of the aerospace world. With clear explanations and real-world examples, you'll be speaking the language of the skies in no time. Bookmark this page and refer to it whenever you encounter an unfamiliar acronym or technical jargon – your aerospace journey just got a whole lot smoother.
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| h | Hour |
| HAAC | Helicopter air-to-air combat |
| HAARS | High-altitude airdrop resupply system |
| HADAS | Helmet airborne display and sight |
| HADS | Helicopter air data system |
| HALE | High altitude, long endurance |
| HALO | High altitude, low observable |
| also: | High altitude, low opening (parachute) |
| HAR | Helicopter, search and rescue (UK) |
| hardened | Affording maximum protection against effects of nuclear blast |
| hard point | Reinforced load bearing to which weapons or stores can be attached |
| HARS | Heading and attitude reference system |
| HAS | Hardened aircraft shelter |
| HASC | House Armed Services Committee (US) |
| HC | Helicopter, cargo (UK) |
| HDD | Head down display; display on cockpit instrument panel |
| HDG | Heading |
| HDU | Hose drum unit; inflight refueling equipment |
| HE | High explosive |
| HEL | High energy laser |
| also: | Helicopter |
| helicopter | Rotary-wing aircraft in which engine power is applied to a horizontal rotor(s) which provide both lift and propulsion |
| HF | High frequency |
| HIFR | Hover inflight refueling equipment |
| HI-LO-HI | Mission profile with high altitude ingress, low-level attack and high altitude egress |
| HMD | Helmet mounted display |
| HMG | Her Majesty's Government (UK) |
| HMS | Helmet mounted sight |
| also: | Her Majesty's Ship (RN) |
| HOCAC | Hands on cyclic and collective (helicopters) |
| homebuilt | Aircraft designed to be built or assembled from plans or a kit by an amateur constructor; re: kitbuilt |
| hot and high | Combination of high temperature and high altitude which has a detrimental effect on performance |
| HOTAS | Hands on throttle and stick; describes location of controls on fighter aircraft |
| hovering ceiling | Altitude at which rate of climb of a helicopter becomes zero |
| hp | Horsepower |
| HP | High pressure |
| HPC | High pressure compressor (jet engine) |
| HPT | High pressure turbine (jet engine) |
| HQ | Headquarters |
| hr | Hours |
| HS | Helicopter Squadron (USAF) |
| HSD | Horizontal situation display |
| HSI | Horizontal situation indicator |
| HSS | Helicopter support ship |
| HST | Hypersonic transport |
| HUD | Head-up display |
| HUDWAC | HUD weapon aiming computer |
| HUDWASS | HUD weapon aiming sub-system |
| HUMS | Health and usage monotiring system |
| HVAR | High velocity aircraft rocket |
| HYD | Hydraulics |
| Hz | Hertz; cycles per second |