Investigation of the movement of the descent vehicle in the planet’s atmosphere taking into account the asymmetry

Authors: Kukharenko A.S.
Published in issue: #4(57)/2021
DOI: 10.18698/2541-8009-2021-4-691
Category: Aviation and Rocket-Space Engineering | Chapter: Aircraft Dynamics, Ballistics, Motion Control
Keywords: descent vehicle, differential equations, stable motion, oscillations, coordinate system, damping moment, angle of attack, rotational motion
Published: 27.04.2021

The work is aimed at improving the technology of spacecraft descent to the surface of planets covered with atmosphere. A feature of the considered descent vehicle is the asymmetry caused by the displaced center of pressure relative to the longitudinal axis. The work simulates the movement of the descent vehicle with an inflatable braking device. Mathematical modeling of the descent process in a stationary flow and a flow with variable parameters has been carried out. The studies were carried out using the numerical integration of the differential motion equations. The results of changes in the angle of attack versus time are shown in the form of graphs. The influence of damping on the stability of the rotational motion of the descent vehicle relative to the center of mass is shown.

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