Metamodeling and Optimisation Applied to the Selection of the Configuration of Atmospheric Entry Vehicles
Rodrigo Haya Ramos, Davide Bonetti · 2006
This paper describes the application of advanced mathematical techniques like the kriging metamodeling and the optimisation through genetic algorithms to the selection of the configuration of atmospheric entry vehicles. For a given aerodynamic shape, the selection of the configuration involves the specification of the center of gravity location and the nominal Angle of Attack profile as well as the identification of margins and corridor for the design of a specific mission. This is the first step in the Flight Mechanics design chain of an atmospheric entry vehicle. The implementation of a large number of constraints in this step is a general recommendation for limiting the number of iterations, but it increases the complexity of the design selection. The classical selection based on graphs, charts and maps, taking into account the mission and system requirements and constraints, is here supported by automated decisions based on numerical optimisation. The advantage of applying metamodeling techniques and genetic algorithms optimisation has been assessed by comparing the results obtained for an advanced capsule (Biconic shape without active control surfaces) and a Klipper derived lifting body concept.