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An observation balloon is a type of balloon that is employed as an aerial platform for gathering intelligence and spotting artillery. The use of observation balloons began during the French Revolutionary Wars , reaching their zenith during World War I , and they continue in limited use today.
A weather balloon, also known as a sounding balloon, is a balloon (specifically a type of high-altitude balloon) that carries instruments to the stratosphere to send back information on atmospheric pressure, temperature, humidity and wind speed by means of a small, expendable measuring device called a radiosonde.
The aerostat consists of four major parts or assemblies: the hull and fin, windscreen and radar platform, airborne power generator, and rigging and tether; they are kite balloons obtaining aerodynamic lift from relative wind and buoyancy from being lighter than air.
The sensor, which is the radiosonde instrument, is powered by a small battery and attached to the balloon; this is what measures the pressure, temperature and relative humidity as it ascends up ...
German observation balloon launching at Équancourt in the Somme (22 September 1916) German war plane brings down a tethered kite balloon (1918) World War I was the high point for the military use of observation balloons, which were extensively deployed by both sides. The British, despite their experience in late 1800s Africa, were behind ...
A ceiling balloon is used by meteorologists to determine the height of the base of clouds above ground level during daylight hours. The principle behind the ceiling balloon is a balloon with a known ascent rate (how fast it climbs) and determining how long the balloon rises until it disappears into the cloud.
The balloon flying over the U.S. is flying around 60,000 feet over the center of the country, officials said. An observation balloon at Van Cortland Park in New York City during a field artillery ...
Balloon may have mistakenly – at least partially – entered American heartland ... It is fitting, then, that the latest excitement has been prompted by what appear to be observation balloons of ...