aerofoil shape eke machan upper face eke area eka yata face eke area ekata wada adui ne.
etakota wing ekata wadina hulan walin udin yana tika loku area ekak cover karanna one nisa speed eka wadi, yatin yana tika speed adui.
so speed vadi tana pressure eka adu wenawa e kiyanne wing eke uda face...