Minimum drag and heating 0.3-caliber projectile nose geometry

Abstract

Understanding the performance of penetrators and aerodynamic bodies of revolution (missiles, rockets, aircraft noses, etc.) requires a close look at the drag and the heat transfer characteristics at a wide range of supersonic flight conditions. This research utilizes computational study and compares the aerothermal loads of supersonic flows around a new penetrator geometry, derived based on the optimization of the nose factor, to those of other common projectile shapes: conical, tangent-ogive, and power series nose geometries. The abundance of research on 0.3-caliber projectile made the choice for this research simple in order to maximize our ability to compare to the existing data. The comparison of our 0.3 caliber cylindrical projectile with other geometries shows that within the range of 500–1500 m/s flight speed the new geometry has the lowest aerodynamic drag, lowest body temperature, and least amount of heating.

Recurrence Relation for Projectile Simulation Project and Game based Learning

“…Following aspects need to be considered in order to model the desired animation. (1) In which direction it should be launched to meet the desired result? (2) How high it will go?…”

“…Understanding projectiles in an interdisciplinary manner is exceedingly important at variety of levels to incorporate them in real life applications. Engineering applications involving projectile use deep and precise analytical equations which are difficult to grasp and requires an in depth domain knowledge [1][2] [3]. Classical literature documented Physical class room experiments to study and build understanding about projectile models [4] [5].…”

“…As a senior computer science faculty, I strongly believe that understanding these mathematical foundation has played an immense important role in polishing ones" cognitive, engineering and programming skills [6] - [12]. There exist three common models to simulate projectile in computer applications for gaming and simulation; they are: (1) No drag model (2) Linear drag model and (3) Quadratic drag model. In no drag model, the motion of projectile is mainly dependent on initial velocity and the angle of launch.…”