Application of the Canadian code to the F/A-18C JDAM separation

Fortin, F.; Benmeddour, Ali; Jones, Duncan

doi:10.2514/6.1999-127

Cited by 11 publications

(9 citation statements)

References 6 publications

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“…The Euler code was developed at IAR and was successfully used to predict the F/A-18C/JDAM separation trajectories 9 . The Euler solver is based on Jameson's cell centred finite volume formulation with the addition of explicit second and fourth order artificial viscosity.…”

Section: Cfd Verificationmentioning

confidence: 99%

Sting effects on store captive loads

Jiang

Tang

Benmeddour

et al. 2001

39th Aerospace Sciences Meeting and Exhibit

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An investigation has been carried out on the effects of the articulated sting, used at the Institute for Aerospace Research (IAR) 1.5m Trisonic Slowdown Wind Tunnel, on the aerodynamic loads measurements of the MK83-BSU mounted on the CF-18 model. The sting-induced increments in store loads for various Mach numbers are discussed in the paper, and qualitatively verified by the CFD solutions from an Euler code. The sting effects on the store trajectories released from the CF-18 are also studied. It is concluded that for store safety release study, errors due to the sting effects are negligible for the conditions investigated.

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Section: Cfd Verificationmentioning

confidence: 99%

Sting effects on store captive loads

Jiang

Tang

Benmeddour

et al. 2001

39th Aerospace Sciences Meeting and Exhibit

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“…This response of the ejectors to the store motion is modeled, and the result is presented as a function of time for each piston. This modeling process for the F/A-18/JDAM is described by Fortin et al [14], and the results are presented in Table 1. A consistent theme with previous simulations is that this ejector model is limited (cf.…”

Section: Ejector Force Modelmentioning

confidence: 99%

“…Cenko [8]). Since even slight errors in the initial trajectory of the store can become augmented as the separation simulation is marched forward in time, researchers have modified either the ejector model [8,9], or the computed JDAM trajectory [14], in order to provide a realistic store separation. Physically, the JDAM is constrained by the ejector mechanism, which is not accounted for in simplistic models.…”

Section: Ejector Force Modelmentioning

confidence: 99%

“…The modified ejector forces and friction resistance are used with all the simulation results presented here. [7,14]).…”

Section: Ejector Force Modelmentioning

confidence: 99%

“…Cenko [7,8]) . The JDAM separation provides an attractive demonstration case because it contains a complex aircraft geometry, flight telemetry and photographic-derived quantitative data, and also because it has been simulated by numerous other CFD methods [9][10][11][12][13][14][15]. These previous CFD simulations can be broken into two broad classes; those which computed a set of static solutions which were used with a store trajectory simulation package, and those which computed the trajectory of the store within the CFD simulation process.…”

Section: Introductionmentioning

confidence: 99%

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Simulations of 6-DOF Motion with a Cartesian Method

Murman

Aftosmis

Berger

et al. 2003

41st Aerospace Sciences Meeting and Exhibit

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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.

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Parallelization of a finite volume CFD code

Rebaine¹,

Fortin²,

Benmeddour³

Workshops on Mobile and Wireless Networking/High Performance Scientific, Engineering Computing/Network Design and Architecture/

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Application of the Canadian code to the F/A-18C JDAM separation

Cited by 11 publications

References 6 publications

Sting effects on store captive loads

Sting effects on store captive loads

Simulations of 6-DOF Motion with a Cartesian Method

Parallelization of a finite volume CFD code

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