I have a MAV and I need to find out the lift and drag coefficients for the wing and tail. I am not available with a wind tunnel so I will be using a load cell along with a separate wind source. Now I can measure forces on the MAV, airspeed at the wing and tail surfaces.
If I just use the angle of attack at the centre of mass then I can find the corresponding lift and drag coefficients (since there are two unknowns and two equations for forces along x and z axis). Now if I want to find separate lift and drag coefficients for wing and tail, for the corresponding angle of attacks, how am I going to do that? Once again I have force on the MAV in the x and z axis, angle of attacks for wing and tail, air speed, two equations of forces but four unknowns.
Please guide me resolve this issue.