The Analysis of free oscillations parachute Systems with elastic line

Аuthors

Churkin V. M.^*, Churkina T. Y.^**

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: churandr@mail.ru
**e-mail: k906@mai.ru

Abstract

Consider the motion in the vertical plane parachute system (PS) with elastically suspended load. In writing the equations of motion of the load model liruetsya material point, the dome axisymmetric solid, strictly nN two linear weightless springs. Compiled simplified the nonlinear equations of perturbed motion of the system, which take into account the non-linear dependence of the normal component of the aerodynamic forces of the dome pa-rashyuta the angle of attack. The method of harmonic linearization are expressions of defining the boundaries of stability regions and the main parameters of the vibrational modes arising from the motion of the system.

Keywords:

parachute system, elastic straps, nonlinear analysis, harmonic linearization, the vibrational modes, stability, self-oscillation.