An aerostat (from Ancient Greek ἀήρ (aḗr) 'air' and στατός (statós) 'standing', via French) or lighter-than-air aircraft is an aircraft that relies on buoyancy to maintain flight. Aerostats include the unpowered balloons (free-flying or tethered) and the powered airships.

Airships, balloons, and blimps generate buoyancy lift or aerostatic lift using an envelope filled with a less dense gas than air, such as helium, enabling them to fly freely and “float” without needing forward airspeed. Such aircraft have been collectively called “airships” or “aerostats.”

The Tethered Aerostat Radar System (TARS) [1] is an American low-level airborne ground surveillance system that uses aerostats (moored balloons) as radar platforms. Similar systems include the EL/M-2083 and JLENS .

2016年3月16日 · Navigating the range of aerostat systems – a summary. An aerostat is a craft that gains lift using a buoyant gas, such as helium or hydrogen, and therefore is lighter than air. All known field operational systems today use helium as their key “lifting” gas (it is non-flammable, so considered safer than hydrogen). Beyond that, aerostat ...

TCOM’s Strategic Aerostat Platforms include some of the largest tethered aerostats currently in operation. These robust systems are ideal for aerial surveillance applications due to their enormous payload capacity and extended altitude range.

2021年10月13日 · A lighter-than-air aircraft, or aerostat, is a vehicle that achieves flight by creating buoyancy or lift by using lifting gas that is lighter than air. This method contrasts with a heavier-than-air aircraft, or aerodyne, which generates lift with the flow of air over an airfoil.

2022年3月2日 · An aerostat is an aircraft that generates lift by using a lifting gas to become lighter than air. Aerostats are named so because they utilize aerostatic lift, a buoyant force that does not require movement through surrounding air.

Tethered aerostats are balloons, similar to blimps, which use lighter-than-air gases to take flight and remain aloft while moored by ground equipment. These balloons can carry equipment such as digital cameras or communication repeaters.