An Offline/Online DDDAS Capability for Self-Aware Aerospace Vehicles
Douglas Allaire, Jeffrey T. Chambers, Raghvendra V. Cowlagi, David N. Kordonowy, Marc Lecerf, Laura Mainini, Fatma Demet Ulker, Karen E. Willcox · Procedia Computer Science · 2013
In this paper we develop initial offline and online capabilities for a self-aware aerospace vehicle. Such a vehicle can dynami- cally adapt the way it performs missions by gathering information about itself and its surroundings via sensors and responding in- telligently. The key challenge to enabling such a self-aware aerospace vehicle is to achieve tasks of dynamically and autonomously sensing, planning, and acting in real time. Our first steps towards achieving this goal are presented here, where we consider the execution of online mapping strategies from sensed data to expected vehicle capability while accounting for uncertainty. Libraries of strain, capability, and maneuever loading are generated offline using vehicle and mission modeling capabilities we have de- veloped in this work. These libraries are used dynamically online as part of a Bayesian classification process for estimating the capability state of the vehicle. Failure probabilities are then computed online for specific maneuvers. We demonstrate our models and methodology on decisions surrounding a standard rate turn maneuver.