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February 16, 2007, 02:22 |
power input / output help
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#1 |
Guest
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Hi,
I would like to find out how to calculate power input / output for a moving airfoil. p(in) should be thrust * vel. -> should be quite certain p_in = - Lift (L)(t)*dy/dt - Moment (M)(t)*d(theta)/dt -> I got this from some papers, which is amount of energy imparted to the airfoil for it to overcome the fluid force.However, the case considered was for an airfoil moving up/down and pitching. What I'd like to know is if the airfoil is also moving sideways (left,right), will I have to add - Drag (D)(t)*dx/dt? thanks alot! |
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