Damping Characteristics of a Reentry Vehicle at Hypersonic Velocities
N. P. Adamov1, L. N. Puzyrev1, A. M. Kharitonov1, E. A. Chasovnikov1, A. A. Dyad'kin2, A. N. Krylov2
1Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
2Korolev Rocket and Space Corporation Energia, Korolev, 141071 Russia
Keywords: reentry vehicle model, free oscillations, frequency of oscillations, damping decrement, longitudinal damping
Abstract
The experimental equipment, model, test conditions, and methods used for determining the streamwise damping on a setup with free oscillations on rolling bearings are described. Characteristics of aerodynamic damping of the model with two positions of the rotation axis and Mach numbers M∞ = 2, 4, and 6 are measured. Irregular oscillations of the model with a greater displacement of the rotation axis with respect to the longitudinal axis are found to arise at M∞ = 2.
|
