Simulations of 6-DOF motion with a cartesian method

Scott M. Murman, Michael J. Aftosmis, Marsha Berger

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Coupled 6-DOF/CFD trajectory predictions using an automated Cartesian method are demonstrated by simulating a GBU-31/JDAM store separating from an F/A-18C aircraft. Numerical simulations are performed at two Mach numbers near the sonic speed, and compared with flight-test telemetry and photographic-derived data. For both Mach numbers, simulation results using a sequential-static series of flow solutions are contrasted with results using a time-dependent approach. Both numerical approaches show good agreement with the flight-test data through the first 0.25 seconds of the trajectory. At later times the sequential-static and time-dependent methods diverge, after the store produces peak angular rates, however both remain close to the flight-test trajectory. A computational cost comparison for the Cartesian method is included, in terms of absolute CPU time, and relative to computing uncoupled 6-DOF trajectories through a pre-computed matrix of simulations. A detailed description of the 6-DOF method is provided in an appendix, along with verification studies confirming its numerical accuracy.

Original languageEnglish (US)
Title of host publication41st Aerospace Sciences Meeting and Exhibit
StatePublished - 2003
Event41st Aerospace Sciences Meeting and Exhibit 2003 - Reno, NV, United States
Duration: Jan 6 2003Jan 9 2003

Other

Other41st Aerospace Sciences Meeting and Exhibit 2003
CountryUnited States
CityReno, NV
Period1/6/031/9/03

Fingerprint

flight tests
trajectory
Trajectories
trajectories
flight
Mach number
simulation
telemetry
Telemetering
charge flow devices
acoustic velocity
aircraft
Program processors
Computational fluid dynamics
Aircraft
costs
matrix
method
Computer simulation
matrices

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

Cite this

Murman, S. M., Aftosmis, M. J., & Berger, M. (2003). Simulations of 6-DOF motion with a cartesian method. In 41st Aerospace Sciences Meeting and Exhibit

Simulations of 6-DOF motion with a cartesian method. / Murman, Scott M.; Aftosmis, Michael J.; Berger, Marsha.

41st Aerospace Sciences Meeting and Exhibit. 2003.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Murman, SM, Aftosmis, MJ & Berger, M 2003, Simulations of 6-DOF motion with a cartesian method. in 41st Aerospace Sciences Meeting and Exhibit. 41st Aerospace Sciences Meeting and Exhibit 2003, Reno, NV, United States, 1/6/03.
Murman SM, Aftosmis MJ, Berger M. Simulations of 6-DOF motion with a cartesian method. In 41st Aerospace Sciences Meeting and Exhibit. 2003
Murman, Scott M. ; Aftosmis, Michael J. ; Berger, Marsha. / Simulations of 6-DOF motion with a cartesian method. 41st Aerospace Sciences Meeting and Exhibit. 2003.
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