Methodology for the HEMP Clearance of a Modern Air Fighter

In this paper, we discuss the route to high-altitude electromagnetic pulse (HEMP) qualification of a modern fighter aircraft. We describe the clearance process of the Eurofighter Typhoon program and discuss particular aspects due to technical considerations and in regard to cost efficiency. The systematic structure of the HEMP clearance process and the overall clearance philosophy was presented. In order to get relevant information as early as possible the chosen clearance process is based on three essential measurement steps (equipment level qualification, coupling measurements, system level test) that are linked together by a prediction algorithm for induced currents and data analysis. The final assessment process employs a set of response norms to compare the aircraft response with the results of equipment level qualification testing.