The compartment in a balloon or airship into which air or another gas can be forced in order to maintain the craft’s shape as buoyant gas is released.
More 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.