An interesting paper has been uploaded from Victor F. Villace (ESA) and Sergey A. Takovitskii (TsAGI). The subject is about the calculation of an optimum trim of an experimental hypersonic glider with EcosimPro and a new library based on the EcosimPro FLIGHT_SIM library.
Single point trimming of the hypersonic glider is not sufficient to accomplish the mission requirements. The research shows that drifts of +/-4% around the centre of gravity imply large penalties on the aerodynamic efficiency along the intended glider trajectory, unless that the vehicle control is optimised for each particular case.