The Unsteady Kernel Used in the Doublet Lattice Method

We have discussed the general idea on how to assess the stability of the aeroelastic system by working on the Laplace-transformed equations of motion. To perform that task, an effective strategy is first to work in the frequency domain and get the generalized aerodynamic force matrix. This is not a trivial task. This chapter will work out the details to explicitly get the expression of the unsteady kernel, which will appear in the fundamental doublet lattice equation.