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Main Question or Discussion Point
Good day all:
I'm having trouble deriving the forces for Lift and Drag in the attached diagram.
The text I have (Fundamentals of Aerodynamics  John Anderson) states the solution to be:
L = N cosα  A sinα
D = N sinα + A cosα
Can anyone guide me through this? I think the cofunction identity is used somewhere:
sin(90  x) = cos x
cos(90  x) = sin x
But that's as far as I've gotten.
Help is appreciated, thanks!
I'm having trouble deriving the forces for Lift and Drag in the attached diagram.
The text I have (Fundamentals of Aerodynamics  John Anderson) states the solution to be:
L = N cosα  A sinα
D = N sinα + A cosα
Can anyone guide me through this? I think the cofunction identity is used somewhere:
sin(90  x) = cos x
cos(90  x) = sin x
But that's as far as I've gotten.
Help is appreciated, thanks!
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