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

TRAJECTORY MODELING OF DIRECT FIRE MISSILE

MOUADA Takieddine

Military Academy, University Of Defence, Belgrade, Serbia, mouadatakieddine@gmail.com

BOUTEMEDJE Abdelwahid

Military Academy, University Of Defence, BELGRADE, SERBIA, boutemedjet.abdelwahid.empfse@gmail.com.

PAVIĆ MiloŠ

Military Technical Institute, BELGRADE, SERBIA, servolab@gmx.com

MIŠLJEN Mirko

Military Technical Institute, BELGRADE, SERBIA, mirko0705@gmail.com

Abstract: This article presents a full six degrees of freedom (6-DOF) numerical simulation for direct fire missile, which is stated by the Proportional Navigation (PN) method to a slowly maneuvering ground target that was executed. Direct fire missiles are fired by line-of-sight aiming and are fired from helicopters or fixed wing aircraft. The missile maneuvering motion depends on the most significant force and moment variations in addition to gravity and target maneuver. The computational flight analysis takes into consideration the Mach number and total angle of attack effects by means of the variable aerodynamic coefficients. The equations governing the kinematics of missile-target engagement geometry for proportional navigation guidance are derived from the first principles of linear algebra for an aerodynamically controlled missile. In this study, a trajectory calculation using a 6-DOF model was developed and applied for 128 mm projectiles with motor running time 1.6 s.

Keywords: Modeling and Simulation, Guidance, Proportional Navigation, Missile-Target Engagement, LOS.