7. Simulator Design

In an optimization algorithm, the performance for each vehicle shape is independently assessed by generating the vehicle shape, generating an aerodynamic database, and numerically propagating the entry trajectory. In this chapter, we give a top-level overview of the implementation of the algorithm, with a focus on the interfaces between the various components. We perform a detailed validation of our aerodynamics modelling approach by comparing literature values of the hypersonic force and moment coefficients for the Apollo capsule and Space Shuttle with results obtained using our methodology. Subsequently, we propagate the entry trajectory using both our coefficients and the tabulated aerodynamic coefficients. Finally, we list the settings we use in our numerical simulations (initial conditions, environmental parameters, etc.).