- lighter-than-air aircraft
- An aircraft that is supported by its buoyancy in the air. Balloons are one of the categories of lighter-than-air aircraft.
Aviation dictionary. 2014.
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Lighter than air — Some gases are buoyant in air because they have densities lower than that of air (about 1.2 kg/m3, 1.2 g/l). Lighter than air gases are used to fill craft called aerostats, which include free balloons, moored balloons, and airships, to make the… … Wikipedia
lighter-than-air — light′er than air′ adj. 1) aer. (of an aircraft) weighing less than the air it displaces, hence obtaining lift from aerostatic buoyancy 2) aer. of or pertaining to lighter than air craft • Etymology: 1900–05 … From formal English to slang
lighter-than-air — /luy teuhr dheuhn air /, adj. Aeron. 1. (of an aircraft) weighing less than the air it displaces, hence obtaining lift from aerostatic buoyancy. 2. of or pertaining to lighter than air craft. [1900 05] * * * … Universalium
lighter-than-air — /laɪtə ðən ˈɛə/ (say luytuh dhuhn air) adjective 1. (of aircraft) of less specific gravity than the air. 2. of or relating to such aircraft … Australian English dictionary
lighter-than-air — adjective relating to a balloon or other aircraft that flies because it weighs less than the air it displaces • Similar to: ↑light • Topics: ↑aircraft … Useful english dictionary
lighter-than-air craft — noun aircraft supported by its own buoyancy • Hypernyms: ↑aircraft • Hyponyms: ↑airship, ↑dirigible, ↑balloon … Useful english dictionary
aircraft classification — Aircraft are classified in several ways: i. With respect to certification, rating, privileges, and information of fliers, there is a broad classification of aircraft. Examples include airplane, rotorcraft, glider, and lighter than air aircraft.… … Aviation dictionary
air law — Introduction the body of law directly or indirectly concerned with civil aviation. Aviation in this context extends to both heavier than air and lighter than air aircraft. Air cushion vehicles are not regarded as aircraft by the… … Universalium
Aircraft registration — A Van s Aircraft RV 7 displaying registration G KELS. The G prefix denotes a civil aircraft registered in the United Kingdom An aircraft registration is a unique alphanumeric string that identifies a civil aircraft, in similar fashion to a… … Wikipedia
Air launch — Air launching is the practice of dropping a parasite aircraft, rocket, or missile from a mothership. The parasite aircraft or missile is usually is tucked under the wing of the larger mothership and then dropped from underneath the wing while in… … Wikipedia