空くう気き房ぼう

noun

auxiliary air bag; ballonnet

Technical term used in airships and similar lighter-than-air craft; refers to an internal air-filled compartment that helps control buoyancy and shape.

• 飛ひ行こう船せんの空くう気き房ぼうは、高こう度ど変へん化かによる気き圧あつ差さを調ちょう整せいする役やく割わりを持もつ。

  The ballonnet of an airship serves to adjust for pressure differences caused by altitude changes.