Error Analysis of Airfoil Experiment

[ruzfactor]

I have done a wind tunnel experiment on NACA 0015 airfoil for different angle of attack at a fixed velocity. Also calculated Cp, Cl, Cd and Cm for each angle of attack. Now I want to do an error analysis to find uncertainties in Cl,Cd and Cm. Please explain how I'm going to do that? I have searched google but couldn't find anything that made me clear about error analysis. The uncertainties should be in %of the total values.

 

[edgepflow]

Off all the variables used to compute the Cp and other factors, you will have to determine the relative error of each. Then you will need to decide which ones are fixed errors (bias) and which ones are random. The bias errors directly add the and random errors add square root of sum of squares.