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MT1_eqsheet - MAE 104 Fall 2009 Equation Sheet for Midterm...

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MAE 104, Fall 2009 Equation Sheet for Midterm 1 Use the following fluid properties: air: ρ = 1 . 2 kg/m 3 ; Drag force per unit span, D 0 , induced by a flow around an object D 0 = 1 2 ρ V 2 c c d where c is the chord of the object, and c d is the drag coefficient. Drag Coefficient c d on a body with a vertical rear part c d = 1 c Z c 0 c pu ( x ) dy u dx - c pl ( x ) dy l dx dx - 1 c Z y u ( x = c ) y l ( x = c ) c pr ( y ) dy where c pu , c pl and c pr are respectively the pressure coefficients on the upper, lower and rear surfaces of the body. x y y u (x) y l (x) c y u (c) y l (c) C pu (x) C pl (x) C pr (y) Drag force per unit span, D 0 , induced by a flow around an object with upstream
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