Transient Temperature Measurements During In-Flight and Wind Tunnel Investigations of Icing Phenomena

DSc, PhD Andrzej J. Panas, Faculty of Mechatronics, Military University of Technology, Warsaw, Poland
Prof. Janusz Terpiłowski, Faculty of Mechatronics, Military University of Technology, Warsaw, Poland
Dr Piotr Waślicki, Faculty of Mechatronics, Military University of Technology, Warsaw, Poland

Abstract

The paper deals with a problem of transient temperature measurements performed on the airfoil exposed to icing conditions. Two types of investigations are discussed: in-flight tests and laboratory icing experiments in a wind tunnel. In the first case measurements were performed during test flights of the Polish TS-11 „Iskra” jet plane. A specially designed on board temperature measurement system was utilised to record the temperature changes in five selected points at the wing. Experiments of the second kind were performed on the NACA0012 model airfoil in a small scale icing research tunnel. In this case a multichannel temperature measurement laboratory system was applied. The experiments were focused on the icing phenomena investigations. The obtained results were analysed in view of the supercooled fuel effect on the heat transfer and on temperature distribution.