In situ evaluation of terminal and in-line sensor setups for unsteady pressure measurements

Sammanfattning: The frequency response of an in-line pressure measuring setup was investigated in order to evaluate its suitability for use in wind tunnel measurements. Testing was conducted in a laboratory environment and a general procedure was developed for both the calibration of the sensors and obtaining the transfer functions for the setup. The tests showed that the in-line setup displays a distinct frequency response, which needs to be accounted for. The developed methods were also tested as a part of a wind tunnel measurement with the calibrations and the measurement of the frequency response done on the sensors in the model, which included both terminal and in-line congurations. Finally, data for a terminal sensor obtained from the testing was corrected by using a previously measured transfer function.