بال واره ، دوکی شکل ، هر جسمی که دارای شکل و مقطع آیرودینامیکی شبیه بال هواپیما باشد
Description
A structure with curved surfaces designed to give the most favourable ratio of lift to drag in flight, used as the basic form of the wings, fins, and tailplanes of most aircraft.
