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 reduces the overall lift while deflating it increases lift. In this way, the ballonet can be used to adjust the lift a...
Found on
http://en.wikipedia.org/wiki/Ballonet
A compartment within the envelope of a balloon or airship into which air can be blown to counteract changes of volume of the gas in the envelope. This is necessary to maintain pressure and alter trim, and in non-rigid types to preserve envelope shape.
Found on
https://www.encyclo.co.uk/local/20784
No exact match found.
