Definition of ballonet in English:

Share this entry


Pronunciation: /ˌbaləˈnā/
(also ballonnet)


A separate gas- or air-filled compartment within the main envelope of a balloon or airship, designed for the maintenance or adjustment of the envelope’s shape, buoyancy, or orientation.
Example sentences
  • The helicopter is fitted with ballonet flotation devices for emergency landing on water.
  • As a rule, such airships have a soft structure of a ballonet and consequently a considerable drag.
  • This triggers an automatic mechanism that pumps air into the ballonet compartment to compensate.



Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.