Polyvinylidene fluoride film sensors for measurement of unsteady pressures on aerodynamic surfaces Part II: Application to a small-scale marine propeller in spatially distorted mean flow

Abstract

 Specially-developed Polyvinylidene Fluoride film sensors were used to measure the unsteady surface pressure on a small-scale marine propeller. Pressure response of the propeller blades to a spatially-varying-mean axial velocity flowfield was measured. Raw data were corrected for the thermally-induced sensor output in the nominally stratified flow with the aid of a blade-mounted constant-current anemometer. Corrected pressure measurements showed a phase lag in the blade pressure response relative to the mean velocity cycle. The necessity to consider thermally-induced sensor response was demonstrated.