HIRF Transfer Functions of a Fuselage Model: Measurements and Simulations

Abstract

An entire set of high-intensity radiated field transfer functions including the main types of contemporary test methods is presented. Consequently, the applied frequency range for this task expands over many decades, from the kilohertz range up to 40 GHz. A major aim is to demonstrate the application of numerical computer modeling for such a task. Results of measurements and various solvers are compared to each other. As the activity serves also for the validation of such applications, the scenario is investigated by the use of a fuselage model with limited complexity. Index Terms-Asymptotic, computational electromagnetics (CEM), direct current injection (DCI), finite-difference time domain (FDTD), high-intensity radiated fields (HIRF), low-level direct drive (LLDD), low-level swept current (LLSC), low-level swept field (LLSF), method of moments (MoM), power balance (PWB).

Predictive Capacity of FDTD Method Embedding MTLN Technique for Lightning and Hirf Threats

“…Again, there is little literature regarding LLSF validations and even fewer for complex structures [37,39,41,42]. However, the good results shown in most of them and also in the present study reveal the suitability of this kind of simulations for shielding effectiveness estimation.…”

“…It is acceptable even for currents induced on inner conductors, which could permit the use of predicted values for determining levels for the pin injection test employed in lightning certification [33]. Likewise, good results for DCI validation have also been achieved mainly for surface current density and even for currents induced along over-braids in previous works as [34][35][36][37][38][39], but with no validation of currents induced on inner conductors.…”

“…There are not many LLSC validations in previous works and even fewer for complex structures. In [21,37,39,40] can be found some examples, but, again, with no validation of currents induced on inner conductors. The validation of a LLSC test is the most complex one since both simulations and measurements have more uncertainty in this frequency range.…”