Self-excited and quasi self-excited pitch-angle oscillations in a flow past a conical-spherical body at Mach number М = 1.75
E.A. Chasovnikov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: cone, self-excited oscillations, self-oscillations, quasi self-oscillations, oscillation amplitude, normalized frequency of oscillations
Abstract
A study on transition processes for experimental time dependencies of the pitch angle for the case of free rotation of a body discovered the final intervals with a steady amplitude of oscillations - known as quasi self-oscillations. Statistical analysis demonstrated that the maximum possible difference between the amplitudes of self-excited oscillations (including the case of quasi self-excited oscillations) at the normalized oscillation frequency of 0.02 was about 1 degree.
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