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The key to understanding the behavior of the balloons is understanding how the pressure inside a balloon varies with the balloon's diameter. The simplest way to do this is to imagine that the balloon is made up of a large number of small rubber patches, and to analyze how the size of a patch is affected by the force acting on it.
A balloon is an inflatable flexible filled with air and also gas, such as helium, hydrogen, nitrous oxide or oxygen. Modern balloons can be made from materials such as latex rubber, polychloroprene, or a nylon fabric, while some early balloons were made of dried animal bladders [citation needed].
Geostationary balloon satellites (GBS) are proposed high-altitude balloons that would float in the mid-stratosphere (60,000 to 70,000 feet (18 to 21 km) above sea level) at a fixed point over the Earth's surface and thereby act as an atmospheric satellite. At those altitudes, air density is around 1/15 to 1/20 [37] of what it is at sea level ...
It only takes about 10 to 15 minutes for it to reach full size, but it needs continuous air to stay inflated. “When we put it up on the front lawn, it definitely looked larger than life ...
A dozen or so hot air balloons, some 1,600 feet above ground level, scattered a sky that soon would fill with hundreds of more balloons for the 52nd Albuquerque International Balloon Fiesta.
Transosondes, weather balloons with instrumentation meant to stay at a constant altitude for long periods of time to help diagnose radioactive debris from atomic fallout, were experimented with in 1958. [6] The drone technology boom has led to the development of weather drones since the late 1990s. [7]
The air-filled red balloon acts as a simple ballonet inside the outer balloon, which is filled with lifting gas. A ballonet is an air bag inside the outer envelope of an airship which, when inflated, reduces the volume available for the lifting gas, making it more dense. Because air is also denser than the lifting gas, inflating the ballonet ...
The balloon and sensor often endure temperatures as low as 139 degrees below zero Fahrenheit, air pressures only a few thousandths of what is found on the Earth's surface, ice, rain, thunderstorms ...
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