A high-altitude platform station (HAPS, which can also mean high-altitude pseudo-satellite or high-altitude platform systems), also known as atmospheric satellite, is a long endurance, high altitude aircraft able to offer observation or communication services similarly to artificial satellites. Mostly unmanned aerial vehicles (UAVs), they remain aloft through atmospheric lift, either aerodynami. DefinitionsHigh-altitude long endurance (HALE) High-altitude, long-endurance (HALE) aircraft are non-weaponized military drones capable of flying at 60,000 ft (18,000 m) over 32 hours, like the USAF RQ-4 Global Hawk or its variants us. In 1983, produced A Preliminary Study of and Associated Power Trains for the, as long endurance flight could be compared to spacecraft. In 1984 was published the Design.
