Swinging with the Jet Set: Analysis of Electromagnetic Fields Inside Jet Engines--From Numerical and Experimental Analysis to Statistical Analysis

Krishna, A.; Khattab, Tamer; Abdelaziz, A. F.; Guizani, Mohsen

doi:10.1109/mmm.2016.2600947

Cited by 4 publications

References 40 publications

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Modeling of electromagnetic propagation inside jet engine environment using statistical electromagnetic approach

Krishna,

Abdelaziz,

Khattab

2024

Sci Rep

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In this paper, the distribution of the electromagnetic field inside a complex jet engine environment is analyzed using statistical electromagnetics. The jet engine environment is an extremely complex geometry and exhibits random behavior due to the presence of moving metallic parts. This renders traditional analytical and simulation modeling techniques highly inefficient. To address this issue, two different approaches are proposed to model the propagation characteristics of the jet engine environment. The first is an innovative dynamic system approach based on dynamic system simulation which is inspired by the analysis of mechanically stirred reverberation chambers. In the dynamic system simulation the dynamic system, which is characterized by the rotation of a distinct set of blades, is primarily studied through the simulation program. A dimension scaling method is also introduced along with the dynamic system simulation to solve the complex jet engine environment. In the second approach, a novel statistical excitation method is applied to develop an equivalent model for the dynamic jet engine system. The studied jet engine is considered as a static jet engine system without blade rotation (static blades), but with a random excitation.A small signal analysis method is used to integrate the static and dynamic system parameters to generate random excitation characteristics of the static system. The extracted electric field values from the dynamic jet engine simulation environment and the static system field values from the small signal analysis have been analyzed statistically to prove the statistical equality between the two systems. The numerical results of the static system model are presented and verified through comparison with finite element method simulation packages.

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Modeling of electromagnetic propagation inside jet engine environment using statistical electromagnetic approach

Krishna,

Abdelaziz,

Khattab

2024

Sci Rep

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Experimental and numerical investigations of microwave return loss of aircraft inlets with low-pressure plasma

Zhang

Chen

et al. 2018

Physics of Plasmas

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The relationships between return losses of the cylindrical inlet and plasma discharge parameters are investigated experimentally and numerically. The return losses are measured using a high dynamic range measurement system and simulated by COMSOL Multiphysics when the frequency band of the microwaves is in the range 1–4 GHz. The profiles of the plasma density are estimated using Epstein and Bessel functions. Results show that the incident microwaves can be absorbed by plasma efficaciously. The maximal return loss can reach –13.84 dB when the microwave frequency is 2.3 GHz. The increase of applied power implies augmentation of the return loss, which behaves conversely for gas pressure. The experimental and numerical results display reasonable agreement on return loss, suggesting that the use of plasma is effective in the radar cross section reduction of aircraft inlets.

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On the Study of the Effect of Frequency Deviation on Electric Field Characteristics Inside Jet Engines

Krishna

Abdelaziz

Khattab

2018

2018 IEEE International Symposium on Antennas and Propagation &Amp; USNC/URSI National Radio Science Meeting

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Swinging with the Jet Set: Analysis of Electromagnetic Fields Inside Jet Engines--From Numerical and Experimental Analysis to Statistical Analysis

Cited by 4 publications

References 40 publications

Modeling of electromagnetic propagation inside jet engine environment using statistical electromagnetic approach

Modeling of electromagnetic propagation inside jet engine environment using statistical electromagnetic approach

Experimental and numerical investigations of microwave return loss of aircraft inlets with low-pressure plasma

On the Study of the Effect of Frequency Deviation on Electric Field Characteristics Inside Jet Engines

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