OPTEC Seminar - Pierre Martinon | OPTEC - K.U.Leuven CoE Optimization in Engineering

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OPTEC Seminar - Pierre Martinon

Thu 16 Apr 2009 16:00-17:00, ESAT Aud. A

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"A less problem dependent indirect approach for optimal trajectories with singular arcs: application to space launchers"
Pierre Martinon, CMAP, Ecole Polytechnique, INRIA-Futurs.
http://www.cmap.polytechnique.fr/~martinon

The talk discusses trajectory optimization for space launcher problems, using Pontryagin's Minimum Principle and an indirect shooting method. Due to aerodynamic forces (mainly drag), the flight may involve singular arcs, i.e. phases with a non maximal thrust. As the analytical expression of several physical parameters is not known, realistic models typically use tabular data (atmospheric pressure for instance). For indirect approaches, this hinders the usual method for computing the singular control, which involves higher order derivatives. We introduce an alternate, less problem dependent method for computing an approximation of the singular control. Numerical experiments are carried out for a typical Ariane 5 and a new launcher prototype.

Slides , movie

Short link	http://www.kuleuven.be/optec/event/902
Event type	Seminar
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Newsflash

Two OPTEC professors have been awarded three "Gouden Krijtjes", the yearly teaching awards given by the organization of engineering students (vtk). Prof. Lombaert was awarded the prize for the best course in civil engineering, and Prof. Diehl the prizes for the best professor and the best course in mathematical engineering (where he teaches numerical optimization). They received these awards at the yearly "proffentap" where experienced students taught them how to draft beer professionally.