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Angle of attack. a. Velocity. Middle line. Cord. http://www.pagendarm.de/trapp/programming/java/profiles/NACA4.html. Lift. F L. Drag. F D. c. Pressure distribution around an airfoil. -. Pressure along the upper surface. D H. 0. Pressure along the lower surface. +.
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Angle of attack a Velocity Middle line Cord http://www.pagendarm.de/trapp/programming/java/profiles/NACA4.html
Lift FL Drag FD c
Pressure distribution around an airfoil - Pressure along the upper surface DH 0 Pressure along the lower surface + http://www.desktopaero.com/appliedaero/
Lift FL Lift
FL Lift coefficientCL
Drag FD Drag
Blade profile data Angle of attack Angle of attack d v Average relative velocity
Wind velocity = C w Relative velocity = V V C U Peripheral velocity = U
Torque FL Trust FD U V C
U V C Torque Trust U V Torque C Trust
C Fthrust w M’torque Torque Trust F’thrust M’thrust