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By 1958, the Fulton aerial retrieval system, or "Skyhook", was finished. The ground system could be dropped from an aircraft and contained the necessary equipment for a pickup, including a harness, for cargo or a person, attached to 500 feet (150 m) of high-strength, braided nylon line and a dirigible-shaped balloon inflated by a helium bottle.
Helium storage and conservation is a process of maintaining supplies of helium and preventing wasteful loss. Helium is commercially produced as a byproduct of natural gas extraction. Until the mid-1990s, the United States Bureau of Mines operated a large scale helium storage facility to support government requirements for helium.
The US Army built the first helium extraction plant in 1915 at Petrolia, Texas, where a large natural gas field averaged nearly 1 percent helium. [6] The United States Navy established three experimental helium plants during World War I, to recover enough helium to supply barrage balloons with the non-flammable, lighter-than-air gas. Two of the ...
Helium is inert - it does not react with other substances or combust - and its atomic number is 2, making it the second lightest element after hydrogen. Rockets need to achieve specific speeds and ...
It’s widely believed that the suspected Chinese surveillance balloon, shot down by the U.S. military on Saturday after passing over the northern U.S. earlier in the week, was a helium balloon.
A nitrogen generator Bottle of 4Å molecular sieves. Pressure swing adsorption provides separation of oxygen or nitrogen from air without liquefaction. The process operates around ambient temperature; a zeolite (molecular sponge) is exposed to high pressure air, then the air is released and an adsorbed film of the desired gas is released.
Helium is a commonly used carrier gas for gas chromatography. The age of rocks and minerals that contain uranium and thorium can be estimated by measuring the level of helium with a process known as helium dating. [28] [30] Helium at low temperatures is used in cryogenics and in certain cryogenic applications.
Some states have banned mass balloon releases, like the one in Cleveland, Ohio, in 1986 when a charity set loose a world-record 1.5 million helium-filled balloons.