Loon LLC
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Loon LLC was an Alphabet Inc. subsidiary working on providing Internet access to rural and remote areas. The company used high-altitude balloons in the stratosphere at an altitude of 18 km to 25 km to
A Loon balloon at the Christchurch launch event in June 2013
The Loon network worked by transmitting from ground stations to a number of balloons floating high up in the atmosphere, which was then received by customers' receivers. Also shown: the wind traveling strategy, the Internet connection, and the area served.
A high-altitude platform station, also known as atmospheric satellite, is a long endurance, high altitude aircraft able to offer observation or communication services similarly to artificial satellite
Loon LLC
…Alliance for Affordable Internet Atmospheric satellite Geostationary balloon satellite…
Wind profile variation with altitude from NASA, showing minimum wind speeds between 17 and 22 km (56,000 and 72,000 ft). Although absolute values will vary, the trends shown are similar for most locations.
Capable of flying up to 60,000 ft (18,300 m) more than 34 hours, the RQ-4 Global Hawk was put into USAF service in 2001.
NASA Pathfinder Plus
NASA Centurion