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Influence of the atmospheric turbulence on the accuracy of the missile targeting

Kowaleczko G., Kaźmierczak R.

Journal of KONES

2017

Vol. 24, No. 1

211--222

The article presents results of simulation of 6-DOF motion for a missile subjected to atmospheric turbulences. Therefore, an applied mathematical model of motion includes description of stochastic turbulences influencing on missile flight. Both models of the motion as well as of turbulences are shortly presented. Model validity was assessed by comparing the calculation results with the data recorded during shooting on the range. Result of series of simulations allows determining the missile sensitivity to this case of disturbances. Exemplary results of simulations are shown. The turbulence model assumes that the wind is dependent on time and space. This assumption is based on the Taylor's "frozen turbulence" hypothesis. The advection velocity of the turbulence is much greater than the velocity scale of the turbulence itself. The velocity has two component. In the article, the first component is omitted and the second is treated as the stochastic process representing atmospheric turbulence. To describe this turbulence Shinozuka's method was applied. Mathematical description of the missile motion, equations of translatory motion, External forces end moments, model of the turbulence are presented in the article.

Evaluation of the jet damping effect on flight dynamics of a homing guided missile

Kowaleczko G.

Journal of Theoretical and Applied Mechanics

2016

Vol. 54 nr 3

893--907

The paper presents evaluation of the jet damping effect on spatial motion of a homing guided missile with variable mass. The mathematical model of motion including effects generated by the burning fuel are presented – changes of mass characteristics as well as the jet damping effect are taken into account. Both the influences of inertia forces/moments and changes of the position of mass center are calculated. The damping effect generating additional forces and moments acting on the missile is also determined. The obtained set of equations of motion allows one to analyze a wide spectrum of various problems, e.g. the influence of jet damping on the homing guided missile trajectory or the dynamic response of the missile to atmospheric disturbances. Exemplary results of simulations are shown.