About the Dynamic Damping Coefficients of a Segmental-Cone Model at Mach M = 2.3
The material was received by the Editorial Board: 14.05.2021
Abstract In order to describe the nonlinear behavior of oscillation amplitude of the segmental-conical model on a transversive rod setup in a wind tunnel at Mach М = 2, a polynomial function of damping derivatives was used. Polynom of the 4th degree as a function of viscous damping allowed to describe two limit cycles observed in experiments. Coefficients of the polynom were determined and showed sufficient agreement with a direct numerical solution of the proposed dynamic equation.
Keywords
Van der Pole equation, dynamic stability of reentry vehicles, aerodynamic damping, free oscillation setup
Funding
The research was carried out within the framework of the Program of Fundamental Scientific Research of the state academies of sciences in 2013–2020 (project no. АААА-А17-117030610125-7). Experiments were carried out using the equipment of the Joint Access Center “Mechanics”
УДК 533.6.013.4
About the Dynamic Damping Coefficients of a Segmental-Cone Model at Mach M = 2.3 References: Adamov N. P., Mishchenko N. A., Chasovnikov E. A. About the Dynamic Damping Coefficients of a Segmental-Cone Model at Mach M = 2.3. Siberian Journal of Physics. 2022, vol. 17, no. 1. P. 34–46 (in Russ.). DOI: 10.25205/2541-9447-2022-17-1-34-46