Accession Number:

ADA456973

Title:

On-Line Aerodynamic Identification for Space Access Vehicles (Preprint)

Descriptive Note:

Conference paper

Corporate Author:

AUSTRAL ENGINEERING AND SOFTWARE INC ATHENS OH

Report Date:

2006-02-01

Pagination or Media Count:

16.0

Abstract:

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.

Subject Categories:

  • Aerodynamics
  • Information Science
  • Computer Hardware
  • Spacecraft Trajectories and Reentry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE