Measurements of unsteady Pressure Distributions and Dynamic Deformations on an SST Elastic Arrow-Wing Model

摘要

Unsteady pressure distributions were measured in a series of experiments for a double-swept-back semi-span SST arrow-wing model in the transonic regime. The wing is an elastic model whose first natural frequency is 9.79 Hz. Forty-six unsteady pressure transducers and 45 pressure orifices are embedded at two semi-span stations to sense unsteady and steady pressure distributions, respectively. Dynamic deformation data of the wing model were also acquired by the use of optical targets and CCD cameras. The flow field around the model was excited by a trailing edge flap which was oscillated around a mean deflection angle in a frequency range up to 30 Hz.