DEVICE AND METHOD OF ACCURATELY MEASURING NON- STATIONARY AERODYNAMIC

摘要

PROBLEM TO BE SOLVED: To accurately measure non-stationary aerodynamic force in a wind tunnel test of a model of a various construction member or the like, by removing influence of extremely large inertial forces acting simultaneously.;SOLUTION: This measuring device comprises a support bar of the model, an exciting part for vibrating the model through the support bar, and a counter weight mounted on the support bar opposite against a model of a connecting point with the exciting part, and a measuring part using a strain gauge mounted near the connecting point as a sensor. In this measuring method, strain near the connecting point is detected while the model is vibrated through the support bar, and one or both of a mass and a mounting position of the counter weight is adjusted so as to balance a moment acting on the connecting point with the inertial force of the counter weight generated by the vibration with a moment acting on the connecting point with the inertial force of the model generated by the vibration. A hinge structure is introduced into the support bar to remove influence of rigidity of the model.;COPYRIGHT: (C)2002,JPO