Aerodynamic and External Ballistic Modelling of a Rocket Target with Two Motors in a Parallel Configuration

In this research, the numerical analysis is con-ducted to study the aerodynamic characteristics of the rocket target RT-400M with two motors arranged in parallel con-figuration with different nose cone shapes and performed ballistics analysis on drag values obtained from the finalised nose shape. Two RM 12K motors are used to increase range. This method reduces the R&D cost required to develop the new rocket motor with extended thrust. Reynolds averaged Navier-Strokes equation with k-omega SST model is adapted for the analysis. A parabolic nose shape produces the least val-ues of drag, drag coefficient, and required velocities. A rocket target with a parabolic nose produces a maximum cd value of 0.29 and is used for the external ballistic calcula-tion. Thrust values of the two motors are obtained from the experimental study. This rocket configuration reaches a maximum of 7800 m distance and a maximum of 3750 m in altitude.