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A high altitude platform can provide observation or communication services. 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.
The first flight of the system designed for high altitude pseudo satellite (HAPS) role was planned from 2019. It is a solar powered high altitude drone with an endurance level as far as 3 months at a cruising altitude of 70,000 ft (21,000 m), weighing 500 kg (1,100 lb).
The Facebook Aquila is an experimental solar-powered drone developed by Facebook for use as an atmospheric satellite, intended to act as relay stations for providing internet access to remote areas. The Aquila first flew on 28 June 2016 with a second aircraft successfully flying in 2017.
In 2003, QinetiQ, a commercial offshoot of the UK Ministry of Defence, was planning to fly its Zephyr 3 up to 40 km at 70 m/s (250 km/h; 140 kn), after being released from a high-altitude balloon at 9 km, besting the NASA Helios which had reached 29 km. [3] It was envisionned as an alternative to space satellites, stationed permanently in the stratosphere for environmental monitoring, mobile ...
The Hawk30 flying-wing is a development of the NASA Pathfinder and NASA Helios high-altitude, long-endurance unmanned aircraft built by AeroVironment for NASA. [2] Resembling the 1999 Helios, the tailless aircraft is a 256 ft (78 m) span flying wing with 10 electric-driven propellers. Orbiting at 65,000 ft (20,000 m), it is solar-powered by day ...
Low Earth orbit is densely packed, with bands such as the one for satellite internet service Starlink from commercial space company SpaceX - at an altitude of 540–570 km (336-354 miles).
For Earth this means a period of just under 12 hours at an altitude of approximately 20,200 km (12,544.2 miles) if the orbit is circular. [16] Molniya orbit: A semi-synchronous variation of a Tundra orbit. For Earth this means an orbital period of just under 12 hours. Such a satellite spends most of its time over two designated areas of the ...
The development of the aircraft is ongoing and currently part of the Airbus High Altitude Pseudo-Satellite (HAPS) programme. [43] It is intended to provide both surveillance and connectivity solutions for months at a time. [44]