Helicopter and avionics systems electromagnetic environmental effects

It is shown that adverse electromagnetic environmental effects (E ³) can be reduced during the configuration of military helicopters by implementing a complete helicopter E³ program. The E³ program methodology includes: defining the electromagnetic environment (EME) in which the helicopter must operate and survive during all phases of its mission; analyzing the performance of the helicopters avionics systems in the EME and correcting deficiencies in both Group A (interface) and Group B (boxes) systems; testing the electromagnetic vulnerability of the helicopter in the EME: and documenting the entire E³ engineering effort through an electromagnetic compatibility advisory board. The avionics configuration analysis program, a computer-aided engineering tool to accomplish the E ³ analysis, and the ribbonized organized integrated wiring concept are presented