REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

VALIDATION OF CFD SIMULATION OF STORE SEPERATION FOR EGLIN TEST CASE

yunus emre sunay

ROKETSAN Missile Industries Inc., Ankara-Türkiye, esunay@roketsan.com.tr

emrah gülay

ROKETSAN Missile Industries Inc., Ankara-Türkiye, egulay@roketsan.com.tr

alİ akgül

ROKETSAN Missile Industries Inc., Ankara-Türkiye, aakgul@roketsan.com.tr

Abstract: The carriage and release of missile from air vehicles are primary importance to missile-integration design analysis in Missile Development Projects. The accurate prediction of the trajectory of a missile released from air vehicles is critical in assessing whether the store can be released safely as well as if it will accurately reach its target. There is a famous store-separation test case: EGLIN test case is a generic model, which is used to validate prediction of trajectory of the separation of missile from air vehicle. Store separation experiments are performed for transonic and supersonic flow regimes. In this study, EGLIN store separation test case is simulated by using time-dependent Computational Fluid Dynamic (CFD) analysis. In addition to that, Navier-Stokes and Euler computations are performed  to investigate the viscous effects on the store trajectory analysis.

Key words: Computational Fluid Dynamics, CFD, Store Separation, EGLIN, FLUENT.