Paolo18
New Member
Hello everybody! I've been working on OpenVSP for a month, but I have found a problem, which prevents me from correctly estimate my 3D model's aerodynamic parameters (C_l, C_d, L/D, C_d0, etc.). I'm using VSPAero for that purpose. Unfortunately, it doesn't work with the whole model, but it forces me to reduce the number of objects taken into consideration in the aerodynamic computation. More in detail, I realized that the programme isn't able to set up the input file when I build the degenerated geometry starting from the main body of the airplane and the two motors, taking them without their links to the fuselage. Why does this happen and how could I avoid this obstacle? I tried to compute the aerodynamic parameters for the airplane body and the two jet motors separately, but I don't know how to estimate the aerodynamic parameters of the whole model, starting from the ones computed for two individual parts (I don't think that it's correct just to add up the correspondent coefficients). Thank you for your attention.
