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

reportActive / Technical Report | Accesssion Number: AD1148105 | Open PDF

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.

Author(s):
Burchett, Bradley T.
Author Organization(s):
U.S. Army Combat Capabilities Development Command, Army Research Laboratory
Funding Organization(s):
U.S. Army Combat Capabilities Development Command, Army Research Laboratory, Aberdeen Proving Ground , MD
Document Type:
Technical Report/Memorandum Report
Publication Date:
2021 Sep 01
Pagination:
31

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution Code:
A - Approved For Public Release
Distribution Statement: Public Release

RECORD

Collection: TRECMS
Subject Terms
Communities of Interest:
Air Platforms
Descriptor(s):
euler angles, identification, military research, abstracts, aircrafts, simulations, standards, trajectories, dynamics, aerodynamics, availability, buildings and structures, classification, coefficients, contracts, monitoring, orientation (direction)
Keyword(s):
spark range, projectile aerodynamics, trajectory reconstruction, system identification, sidpac(System Identification Programs for AirCraft)
Subject Categories:
Navigation, Detection and Countermeasures; Ordnance; Ordnance
Creation Date:
2021 Sep 22
Update Date:
2021 Oct 05