Ice formation in a pressure measurement line was posing a control problem for a jet engine operating at high altitude. Moisture would enter the line at low levels and then freeze as the aircraft rose, disabling a key measurement used for accurate control of the engine. Our client needed to know how quickly the blockage would occur under different operating scenarios.
It quickly became apparent that ice blockages were not certain to occur, but only happened in particular conditions. Furthermore, it would be possible to alter the pressure line so that the ice formed in such a way that blockages would not occur at all.