Method of Finding Aerodynamic Characteristic Equations of Missile for Trajectory Simulation

Authors: Attapon Charoenpon, Ekkarach Pankeaw

Abstract:

This paper present a new way to find the aerodynamic characteristic equation of missile for the numerical trajectories prediction more accurate. The goal is to obtain the polynomial equation based on two missile characteristic parameters, angle of attack (α ) and flight speed (╬¢ ). First, the understudied missile is modeled and used for flow computational model to compute aerodynamic force and moment. Assume that performance range of understudied missile where range -10< α <10 and 0< ╬¢ <200. After completely obtained results of all cases, the data are fit by polynomial interpolation to create equation of each case and then combine all equations to form aerodynamic characteristic equation, which will be used for trajectories simulation.

Keywords: Aerodynamic, Characteristic Equation, Angle ofAttack, Polynomial interpolation, Trajectories

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1081361

References:

[1] John D.Anderson, Jr, "Fundamental of Aerodynamics", 3rd ed. New York: McGraw-Hill, 2001, pp. 15-35.
[2] Steven C. Chapra, Raymond P.Canale,"Numerical Methods for Engineer", 6th ed. New York: McGraw-Hill, 2009.
[3] G.Harry Stine,"Handbook of Model Rocketry", 7th ed. New Jersey: John Wiley&Sons, 2004.
[4] Aerocon System URL: aeroconsystems.comicart/products/Rattworks J90_Hybrid_Rocket_Mot or-133-0 .html.