WorldofAerospace.googlepages.com Contact Us | Sitemap | Home Calculate Aerodynamic Force Fa on Flat Surface  Method to Calculate the Aerodynamic Force Fa on a piece of Flat Surface. Aerospace Aerodynamic Force on a Flat Surface In order to calculate the Aerodynamic Force on Flat Surface we need to first define the dimensions of the flat surface. The Dimensions are in x-direction and y-direction in feet where the x-direction is in the direction of the flow and y-direction is perpendicular to the direction of the flow.   Now, the Pressure Distribution in lbs per square foot equation is defined.   and, the Shear Stress Distribution in lbs per square foot is also defined.   Using integration and noting that x = 0 at the front of the surface, the value of dA, Force due to pressure distribution Fp and Force due to shear stress distribution F(tw) are computed.   The aerodynamic force is calculated using the formula, Fa = squareroot(Fp^2 + F(tw)^2).   The value of theta is calculated using, theta = arctan (Fp/F(tw)). Download Free Program to Calculate the Aerodynamic Force on a piece of Flat Surface 