هواپیما SECRETS

A variable geometry wing could be improved in flight to a different shape. The variable-sweep wing transforms concerning an economical straight configuration for takeoff and landing, to a reduced-drag swept configuration for top-velocity flight.اردو الفاظ کا وسیع ذخیرہ جہاں لفظ اپنی خوش آہنگ آوازوں،