Simulations of store separation from an F/A-18 with a Cartesian method

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

Research output: Contribution to journalArticle

Abstract

Coupled computational fluid dynamics with six-degree-of-freedom trajectory predictions using an automated Cartesian method are demonstrated by simulating a GBU-31/Joint Direct Attack Munition 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 s 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.

Original languageEnglish (US)
Pages (from-to)870-878
Number of pages9
JournalJournal of Aircraft
Volume41
Issue number4
DOIs
StatePublished - 2004

ASJC Scopus subject areas

  • Aerospace Engineering

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