Impact of <i>In Situ</i> Radome Lightning Diverter Strips on Antenna Performance

Vuković, Ana; Sewell, P.; Benson, T.M.

doi:10.1109/tap.2020.2998169

Cited by 10 publications

(5 citation statements)

References 25 publications

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“…The Delaunay mesher [26] is a robust 3D implementation of the techniques described in [27] augmented by many features that ensure that the meshes produced are sympathetic to the needs of subsequent large-scale EM simulation and has been widely used for the purpose [28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Systematic Generation of Arbitrary Antenna Geometries

Altinozen

Harrison

Vuković

et al. 2022

IEEE Trans. Antennas Propagat.

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Applications for conformal, wearable antennas are growing for consumer electronics. Hence, it is important to assess to what degree antenna performance can be tolerant to in-situ deformations that can take the form of bending, crumpling and twisting and combinations of these effects. However, generating geometries of arbitrary antenna deformations such as bending, crumpling and twisting, that can be processed by standard electromagnetic software is a major challenge that significantly complicates full assessment of in-situ antenna performance. Constructive Solid Geometry methods of generating geometries is difficult to robustly apply to non-conformal antennas and more flexible techniques required to progress the antenna studies further. To address this challenge, this paper investigates the utility of the Green Coordinate method for spatial manipulation of 3D objects. First a calibration of a straightforward application of the GC method against a reference case of a patch antenna bent over a cylindrical surface, which can also be generated exactly, is undertaken. The paper shows that systemic scaling distortions are introduced by the GC method and introduces a compensation method that can overcome these distortions. Subsequently, the compensated method is used to obtain new predictions of the electromagnetic performance of patch antennas with deformations.

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Section: Introductionmentioning

confidence: 99%

Systematic Generation of Arbitrary Antenna Geometries

Altinozen

Harrison

Vuković

et al. 2022

IEEE Trans. Antennas Propagat.

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“…Existing constructions cannot eliminate risk of damage to the aircraft radome and/or failure of radio navigational equipment located under it as a result of atmospheric electricity. Therefore, in recent years investigations are being conducted to further perfect the lightning protection (including using various lightning diverter types) for aircraft radomes and equipment under them [4][5][6][7][8][9]15,[17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

A Laboratory Investigation of the Probable Mechanisms of the Action of an Artificial Thunderstorm Cell on Model Aircraft Radomes

et al. 2021

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The results of experimental laboratory investigations of possible mechanisms of the impact of lightning and thunderclouds on aircraft radomes and equipment inside them are presented. An artificial thunderstorm cell of negative polarity and model aircraft radomes with lightning diverter strips have been used. Experiments have shown that the discharge processes in a radome model significantly depend on the magnitude of the charge that accumulates on the inner and outer surfaces of the radome shell. It is established that the accumulation of large-magnitude charges of different signs on the outer and/or inner surface of the radome (up to hundreds of µC/m2) shell leads to a multivariance of the mechanisms of development of discharge processes inside the radome model, along its surface, and in the space near it. Significant influence of the “reverse” discharge from the antenna model under the radome on the types of current impulses recorded on the antennas under impact of the artificial thunderstorm cell is established. Peculiarities of the discharge formation in the radome model when using solid and segmented diverter strips for its protection are revealed. Parameters of the current impulses registered on the diverter strips and the antennas have been determined. Based on the conducted research, the possible mechanisms of the impact of thunderclouds and lightning discharges on radio-transparent aircraft radomes and the equipment inside them are considered.

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“…More than a third part of lightning strikes on an aircraft falls on its nose part where the dielectric nose radome is installed which is designed to protect the antenna systems of the radio navigation facilities against the environmental impacts in flying conditions [1][2][3]. For the nose radomes lightning protection, solid lightning diverter strips (rigid busbars) and segmented lightning diverters are mainly used [1,[3][4][5]. Thunderstorm clouds and lightnings create on the radome surface discharges that can induce on the antenna interference signals of different spectra.…”

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confidence: 99%

Investigation of the influence of the type of the lightning diverter strip on the spectrum of electromagnetic interference on the antenna under the model of the nose radome of the aircraft by using an artificial thunderstorm cell

Temnikov

Chernensky

Orlov

et al. 2022

Technical Physics Letters

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The paper presents the results of physical modeling of the effect of solid and segmented lightning diverter strips on the spectrum of electromagnetic interference on the antenna under the model of the aircraft nose radome under the influence of an artificial thunderstorm cell. It is shown that the use of segmented lightning diverter strips leads to appearance of signals with frequencies up to a few gigahertz in the spectrum on the antenna. The relationship between the antenna signal spectrum and spectral characteristics of current pulses on the lightning diverter strip is established. The influence of discharges along the radome surface and those between the segments on the electromagnetic interference spectrum on the antenna under the radome has been revealed. Keywords: lightning, solid and segmented lightning diverter strips, model of aircraft nose radome, artificial thunderstorm cell, wavelet spectrum, discharge.

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Impact of In Situ Radome Lightning Diverter Strips on Antenna Performance

Cited by 10 publications

References 25 publications

Systematic Generation of Arbitrary Antenna Geometries

Systematic Generation of Arbitrary Antenna Geometries

A Laboratory Investigation of the Probable Mechanisms of the Action of an Artificial Thunderstorm Cell on Model Aircraft Radomes

Investigation of the influence of the type of the lightning diverter strip on the spectrum of electromagnetic interference on the antenna under the model of the nose radome of the aircraft by using an artificial thunderstorm cell

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