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A dirigible (or "dirigible balloon", "Ballon dirigeable" etc.) is an LTA aircraft which can be actively piloted.

Ratio of power to speed:

[...] the power necessary to communicate increasing speeds to the same airship increases proportionately to the cube of the speed. This law has been demonstrated by calculation and verified by experience. It is of vital importance, for it leads to various conclusions of the utmost moment. Thus to double the speed of a dirigible balloon, we must give it a motor power not twice, but eight times greater (8 is the cube of 2; 8=2x2x2).[1]
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Index of 19th-century French dirigibles and the sizes and speeds of their propellers.


See Ballon dirigeable on Wikipédia; also w:Airship and w:de:Luftschiff.

Patents in category dirigibles Patents in categories dirigibles or dirigible Patents in categories dirigible or dirigibles



Enclosing categories LTA
Keywords balloon, navigation, propulsion, aerostat
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