Aerospace Instrument-Making Annotation << Back Simulator of the leading-slave aircraft relative motion in the orbicular coordinate system of the slave aircraft V.M. Terent’ev The work represents dynamic and kinematic equations of the relative motion of the two aircrafts, which are written in the different coordinate systems. This equations might be using in the synthesis of the information processing algorithms for the aircraft control system in the group and in the conduction of the mathematical modeling of the aircraft flight in the regime group. Key words: aircraft, relative motion, differential equation, coordinate system, cosine matrix. E-mail: kbpa@san.ru