MINIATURIZED TUNED MASS DAMPER FOR APPLICATION TO HIGH SPEED WIND TUNNEL TESTING

摘要

A tunable mass-damping apparatus may include a housing having an interior surface, an interior volume containing a gas, and an axis. The housing may be configured to be coupled to a wind tunnel model. The mass-damping apparatus may include a mass configured to move back and forth in the interior volume along the axis. The mass may be configured to make an airtight seal with the interior surface of the housing, thereby dividing the interior volume into an upper chamber and a lower chamber. The mass-damping apparatus may include a passage through the mass fluidly connecting the chambers and at least one spring configured to exert a position-dependent force upon the mass. The spring may be characterized by a spring constant chosen based on a natural frequency of a support structure of the wind tunnel model.