Abstract: The exposure of a system to an X-ray or γ-ray environment produces system generate electromagnetic pulse (SGEMP). The X-ray or γ-ray generate emissions of photoelectrons, Compton electrons and secondary electrons from surface of system materials, which produce photo Compton currents in the space within and about the system structure. These photo-Compton currents generate electric and magnetic fields which couple energy into the system electric circuit. For most SGEMP interest is the net number of electrons crossing a boundary at the interface between dissimilar material. In the paper the responses to SGEMP of aerocraft while it is exposed in the pulse X-ray radiation environment induced by high altitude nuclear explosion are analyzed. The mechanism, magnitude and couple approach to syste