About the Dynamic Damping Coefficients of a Segmental-Cone Model at Mach M = 2.3.
https://doi.org/10.25205/2541-9447-2022-17-1-34-46
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
Supporting agencies: 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”
About the Authors
N. P. Adamov
Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Nikolai P. Adamov, Candidate of Engineering Sciences
Novosibirsk
N. A. Mishchenko
Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences; Novosibirsk state University
Russian Federation
Russian Federation
Nikita A. Mishchenko, Laboratory Assistant
Novosibirsk
E. A. Chasovnikov
Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Evgenii A. Chasovnikiv, Candidate of Engineering Sciences
Novosibirsk
References
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Review
For citations:
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;17(1):34-46. (In Russ.) https://doi.org/10.25205/2541-9447-2022-17-1-34-46
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