- free balloon
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—free ballooning.a balloon, often equipped to carry passengers, that drifts with air currents and whose ascent and descent are controlled by the release of ballast and buoyant gas.
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Universalium. 2010.
free balloon
Look at other dictionaries:
free balloon — noun : a balloon which can be made to ascend by the use of ballast and to descend by the release of gas but which cannot be guided in flight * * * free ballooning. a balloon, often equipped to carry passengers, that drifts with air currents and… … Useful english dictionary
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balloon flight — ▪ aviation Introduction passage through the air of a balloon that contains a buoyant gas, such as helium or heated air, for which reason it is also known as lighter than air free flight. Unmanned balloons have been used to carry meteorological… … Universalium
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Free-fall — is motion with no acceleration other than that provided by gravity. Since this definition does not specify velocity, it also applies to objects initially moving upward. Although the definition specifically excludes all other forces such as… … Wikipedia
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Balloon loop — A Balloon loop is a track arrangement that allows a train to reverse direction, and return to where it came from, without having to shunt or even to stop. Balloon loops can be useful for passenger trains, and unit freight trains, such as coal… … Wikipedia
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