A First Look at Using System Identification Programs for AirCraft (SIDPAC) to Reduce Data from Ballistic Shots

Abstract

NASA's System Identification Programs for AirCraft (SIDPAC) is used to reduce data generated by a coupled Computational Fluid Dynamics/Rigid Body Dynamics (CFD/RBD) simulation. First, the CFD force predictions are used in a direct regression to determine force and moment coefficients for a conventional aircraft-type aerodynamic model of the Laboratory Technology Vehicle. Second, RBD motion predictions of Cartesian position and Euler angle orientation are used as reference for a motion-reconstruction study using the SIDPAC output error (oe.m) routine. Finally, we explore motion reconstruction with sparse measurements mimicking what would be captured in an actual spark-range test.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2021
Accession Number
AD1148105

Entities

People

  • Bradley T. Burchett

Organizations

  • United States Army

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Aerodynamics
  • Aircrafts
  • Algorithms
  • Availability
  • Buildings And Structures
  • Classification
  • Coefficients
  • Computational Fluid Dynamics
  • Computational Science
  • Contracts
  • Data Sets
  • Dynamics
  • Euler Angles
  • Fluid Dynamics
  • Free Flight
  • Identification
  • Measurement
  • Mechanics
  • Military Research
  • Monitoring
  • Nonlinear Dynamics
  • Orientation (Direction)
  • Physics
  • Physics Laboratories
  • Simulations
  • Standards
  • Trajectories
  • Vehicles

Readers

  • Computational Modeling and Simulation
  • Control Systems Engineering.
  • Critical Infrastructure Protection in CBRN and WMD Threats.