METHOD OF ASSESSING EFFECT OF AIR ON DAMPING STRUCTURAL VIBRATIONS Russian patent published in 2020 - IPC G01M9/06 G01M10/00 

FIELD: astronautics.

SUBSTANCE: invention relates to ground-based dynamic tests of space structures, for example, panels of solar panels and antenna reflectors. Method consists in hanging structures in a liquid medium, establishing an oscillation measurement system. At that said structures are pre-made in the form of scaling models, the scale of which corresponds to the damping of model oscillations in liquid medium damping oscillations of nature in air. Then, deviation of the model from the equilibrium position realizes the mode of free oscillations, by attenuation of which the damping characteristics of the oscillations of the model are determined, then scale models of structures are hung on elastic suspension in vacuum chamber and characteristics of damping by damped free oscillations of scaled models of structures in vacuum chamber are determined. Thereafter, the effect of the air medium on the damping of structural vibrations is evaluated by comparing damping characteristics obtained on scale models in a liquid medium with such characteristics obtained in a vacuum chamber.

EFFECT: technical result consists in simplification of experiment, reduction of time costs for conducting research.

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