Print Email Facebook Twitter Distance Fields Over Grids Method for Aircraft Envelope Determination Title Distance Fields Over Grids Method for Aircraft Envelope Determination Author Helsen, R van Kampen, E. (TU Delft Control & Simulation) de Visser, C.C. (TU Delft Control & Simulation) Chu, Q. P. (TU Delft Control & Simulation) Date 2016 Abstract In this research, the concept of posing the flight envelope as a reachable set is ex- plored further and it is investigated whether the "Distance Fields Over Grids (DFOG)" method for reachability computations is a viable method for envelope determination. The DFOG method approximates the reachable set of a dynamic system by solving a number of optimal control problems over a grid in the state-space. Then, the end- points of the resulting optimal trajectories are used to provide an approximation of the reachable set. The DFOG method is improved by using a 2nd order RK method for the state discretization and developing a new adaptive grid selection approach. This method is then applied to the computation of a four-dimensional reachable set of a nonlinear high-fidelity F-16 model. The results are compared to results obtained pre- viously with level sets and show that the DFOG method provides a less conservative approximation to the reachable set. 1 To reference this document use: http://resolver.tudelft.nl/uuid:03e5d482-c49f-4fc5-b084-acb51cc2d1d7 DOI https://doi.org/10.2514/1.G000824 ISSN 0731-5090 Source Journal of Guidance, Control, and Dynamics: devoted to the technology of dynamics and control, 39 (7), 1470-1480 Part of collection Institutional Repository Document type journal article Rights © 2016 R Helsen, E. van Kampen, C.C. de Visser, Q. P. Chu Files PDF 2016_Helsen_Distance_Fiel ... viewed.pdf 951.56 KB Close viewer /islandora/object/uuid:03e5d482-c49f-4fc5-b084-acb51cc2d1d7/datastream/OBJ/view