Ways of Improvement for HIRF Transfer Function Assessment on Rotorcraft

According to the rotorcraft certification requirements, the helicopters must withstand High Intensity Radiated Field. The certification substantiation partly relies on the elaboration of transfer functions based on modeling results and therefore on the precision of the numeric model. The limitation of the state of the art modeling approach is pointed out and some ways of improvement are proposed in order to prevent the overestimation of the transfer functions. The modification's benefits of the model are confirmed by the comparison between models and experimental results.