Effect of some Disturbance Factors on Falling Point Distribution of Unguided Rocket

The paper investigates the individual and combined effects of disturbance factors includ-ing thrust misalignment, the offset of the centre of gravity and misalignment of the principal axes of inertia on falling point distribution of a type of unguided rocket (fin-stabilized rockets with single-stage solid-propellant rocket engines). The mathematical model used in the paper is developed from an available rocket motion model and solved for a representative rocket which is BM-21 rocket. The obtained results show dependencies of falling point deviation on disturbance parameters. These dependencies agree with the standard data given in the firing table; in addition, they are fuller and more insight-ful than the previous research. © 2021, University of Defence. All rights reserved.