Definition of ballonet in English:
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.
- 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.
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