Accession Number : ADB022461

Title :   Ballistic Reentry Vehicle Aerodynamic Coefficient Estimation Using an Advanced System Identification Technique

Descriptive Note : Final rept. 1 Mar 1976-1 Mar 1977

Corporate Author : SYSTEMS CONTROL INC (VT) PALO ALTO CA

Personal Author(s) : Gupta, Narendra K ; Hall, Jr, W E

PDF Url : ADB022461

Report Date : Aug 1977

Pagination or Media Count : 97

Abstract : This report develops post-flight data processing methods for aerodynamic coefficient estimation of ballistic reentry vehicles based on advanced system identification technology. This post-flight data processing involves reconstruction of unmeasured channels, aerodynamic coefficient model structure determination and maximum likelihood parameter estimation. The methods are verified on a simulation trajectory and on a flight test trajectory. It is shown that the techniques are general enough to handle a variety of regimes encountered by a typical ballistic reentry vehicle.

Descriptors :   *BALLISTIC TRAJECTORIES, *BOUNDARY LAYER TRANSITION, *REENTRY VEHICLES, AERODYNAMIC CHARACTERISTICS, ALGORITHMS, ANGLE OF ATTACK, COEFFICIENTS, COMPUTER PROGRAM VERIFICATION, DATA REDUCTION, FLIGHT TESTING, IDENTIFICATION, MACH NUMBER, MATHEMATICAL MODELS, REYNOLDS NUMBER, SYSTEMS ANALYSIS

Subject Categories : Guided Missile Dynam, Config & Cntrl Surfaces
      Guided Missile Reentry Vehicles

Distribution Statement : APPROVED FOR PUBLIC RELEASE