Dergi makalesi Açık Erişim

Nonlinear yaw-pitch-roll coupling of unguided missiles with wraparound fins

2000    Tanrikulu, O; Onen, C; Gokhan, T

Almost all of the research on flight dynamics of unguided missiles with wraparound fins is based on linear system models. This is in sharp contrast with the research on flight dynamics of planar finned unguided missiles, which has focused mostly on nonlinear problems since the 1950s. A general fifth-order nonlinear autonomous dynamic system model is developed for unguided missiles with four wraparound fins. Aerodynamic characteristics of a basic planar finner and a basic wraparound finner are obtained by using a panel code, Missile DATCOM empirical database, and published experimental data. Effects of nonlinear aerodynamic terms on location and stability of equilibrium points of a basic planar finner and a basic wraparound finner are investigated. It is shown that wraparound and planar finned unguided missiles have different aerodynamic and flight dynamic characteristics.