Aerospace Engine Cable Harness Electromagnetic Response Model Advances EMC Analysis
A research paper published in ScienceDirect's journal in March 2026 presents a digital model-based approach to analyzing the electromagnetic response of aircraft engine cable harnesses under high-power microwave (HPM) irradiation .
Key Technical Contributions:
New shielded differential line model for twisted-pair impedance calculation, more representative of real-world aerospace wiring
Integration of electrical, magnetic, material, structural, and geometric data into a comprehensive digital model
Numerical analysis of HPM response in multi-branch shielded cables
Harness resonance patterns identified; maximum coupling at intake wave direction
Key Findings:
Different sensor cables in the cable harness may have multiple resonant frequencies
When different cable branches have common trunk cable paths, crosstalk may cause multiple branches to have the same frequency point
When incident direction of plane electromagnetic wave is towards the air inlet opening, coupling voltage of cable harness is highest
Maximum coupling voltage peak reached at temperature sensor cable: 1.26 V
Maximum error between coupling voltage test and numerical results of each sensor interface: ≤9.001 dB
Significance:
This method significantly overcomes shortcomings of previous related research and provides a digital solution running through the entire design, manufacturing, and operation cycle. It helps promote the evolution of wire harness design toward model-driven and data-
