On-Line Aerodynamic Identification for Space Access Vehicles (Preprint)
AUSTRAL ENGINEERING AND SOFTWARE INC ATHENS OH
Pagination or Media Count:
This paper describes the on-going development of a comprehensive integrated guidance and control architecture featuring an on-line aerodynamic identification scheme that produces a global estimate of a damaged vehicles aerodynamic characteristics. This estimate is used to derive updated constraints reflecting the vehicles degraded maneuverability that are incorporated into computationally efficient algorithms for on-line trajectory reshapingretargeting. This paper presents recent progress on a Multiple-Model Adaptive Estimation approach to the global aerodynamic estimation process. The scheme utilizes diagnostic information assumed to be provided by a vehicle health monitor to generate a bank of aerodynamic models in which each model is created by an aerodynamic prediction code for a vehicle configuration reflecting a particular type of damage. The individual models are blended through weights that are adapted on-line using measured data.
- Information Science
- Computer Hardware
- Spacecraft Trajectories and Reentry