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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 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 ...
The Zephyr is a series of high-altitude platform station aircraft produced by Airbus. They were designed originally by QinetiQ, a commercial offshoot of the UK Ministry of Defence. In July 2010, the Zephyr 7 flew for 14 days. In March 2013, the project was sold to Airbus Defence and Space. In the summer of 2022, the Zephyr 8/S flew for 64 days.
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 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]
Cavalier Space Force Station, North Dakota, is a United States Space Force installation, where the 10th Space Warning Squadron, Space Delta 4, United States Space Force monitors and tracks potential missile launches against North America with the GE AN/FPQ-16 Enhanced Perimeter Acquisition Radar Attack Characterization System (PARCS).
High Earth orbit: geocentric orbits above the altitude of geosynchronous orbit (35,786 km or 22,236 mi). [8] For Earth orbiting satellites below the height of about 800 km, the atmospheric drag is the major orbit perturbing force out of all non-gravitational forces. [11]
Advanced Extremely High Frequency (AEHF) is a constellation of communications satellites operated by the United States Space Force. They are used to relay secure communications for the United States Armed Forces , the British Armed Forces , the Canadian Armed Forces , the Netherlands Armed Forces and the Australian Defence Force . [ 3 ]