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In mid-1982, Walters and his then girlfriend, Carol Van Deusen, purchased 45 eight-foot (2.4 m) weather balloons from a military surplus store [5] and helium tanks from California Toy Time Balloons. They used a forged requisition from his employer, FilmFair Studios , saying the balloons were for a television commercial.
A balloon can only have buoyancy if there is a medium that has a higher average density than the balloon itself. Balloons cannot work on the Moon because it has almost no atmosphere. [15] Mars has a very thin atmosphere – the pressure is only 1 ⁄ 160 of earth atmospheric pressure – so a huge balloon would be needed even for a tiny lifting ...
High-altitude balloons or stratostats are usually uncrewed balloons typically filled with helium or hydrogen and released into the stratosphere, generally attaining between 18 and 37 km (11 and 23 mi; 59,000 and 121,000 ft) above sea level. In 2013, a balloon named BS 13-08 reached a record altitude of 53.7 km (33.4 mi; 176,000 ft). [1]
The first manned balloon flight in Britain was by James Tytler on 27 August 1784. Tytler flew his balloon from Abbeyhill to Restalrig, then suburbs of Edinburgh. He flew for ten minutes at a height of 350 feet. [32] The first manned balloon flight in England was by Signor Vincent Lunardi who ascended from Moorfields (London) on 15 September ...
Helium usually makes up a minuscule portion of natural gas, but can make up as much as 10 percent of natural gas in some fields. A helium content of 0.3 percent or more is considered necessary for commercial helium extraction. [1] In 2012, helium was recovered at 16 extraction plants, from gas wells in Colorado, Kansas, Oklahoma, Texas, and ...
While such waste of gas was necessary for the survival of airships in the later years of World War I, it was impractical for commercial operations, or operations of helium-filled military airships. The highest flight made by a hydrogen-filled passenger airship was 1,700 m (5,500 ft) on the Graf Zeppelin's around-the-world flight.
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