vaayupatrak
 |
yeh lekh ek aadhaar hai. aap ise badhaakar vikipeediya ki sahaayata kar sakte hain. |
kisi vaayuyaan ke pankh (wing) aadi ke anuprasth kaat (cross-section) ke aakaar ka naam vaayupatrak (airfoil ya aerofoil) hai. vaayuyaan ke pankh ke alaava propelar, rotar ya tarbaain ke blade ke anuprasth kaat ke aakaar ko bhi vaayupatrak kehte hain. is aakaar ka bahut mahatva hai kyonki gati ke samay balon ka parinaam va disha is par nirbhar karti hai.
