Study of Lightning Effects on Aircraft With Predominately Composite Structures

Jazzar, Ali; Clavel, Édith; Meunier, G.; Vialardi, Enrico

doi:10.1109/temc.2013.2297444

Cited by 18 publications

(8 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lightning frequency band is defined from zero hertz to few megahertz according to the Fourier transform of the Atype waveform [43]. A Gaussian waveform is used rather than an A-type waveform in order to avoid long time simulation.…”

Section: A Fuel Tank and Fastener Modellingmentioning

confidence: 99%

Lightning Currents on Fastening Assemblies of an Aircraft Fuel Tank, Part I: Uncertainties Assessment With Statistical Approach

Monferran

Guiffaut

Reineix

et al. 2020

IEEE Trans. Electromagn. Compat.

View full text Add to dashboard Cite

This paper proposes a statistical approach able to assess the fastening resistances uncertainties in aircraft assemblies. This method relies on the use of the maximum likelihood estimation method, several statistical tests and/or statistical criteria. Using the Dassault-Aviation measurement database, distribution laws are established in order to characterize uncertainties in the lightning impact on the fasteners. A simple FDTD fastener model is proposed with a wire and a resistance. This generic model can represent any fasteners. The statistical model established from the fastener resistances state after a lightning shot is used to define the stochastic distribution values in the fastener electric model. This model is added to a 3D FDTD parallelepiped generic fuel tank model. In this article, we compare the current distributions between a composite and metallic fuel tank. The results highlight not only the model uncertainties effects on the statistical approach but also the fuel tank material choice impact. Index Terms-Statistical method, finite-difference timedomain (FDTD) modelling, fastener modeling, lightning effects, fuel tank aircraft, composite material.

show abstract

Section: A Fuel Tank and Fastener Modellingmentioning

confidence: 99%

Lightning Currents on Fastening Assemblies of an Aircraft Fuel Tank, Part I: Uncertainties Assessment With Statistical Approach

Monferran

Guiffaut

Reineix

et al. 2020

IEEE Trans. Electromagn. Compat.

View full text Add to dashboard Cite

show abstract

“…The conductivity values shown in Figs. 9 and 11 represent the sample conductivity, 0 , in (2). The carbon fibre conductivity is typically in the range of 40,000 to 70,000 S/m according to various carbon fibre manufacturer datasheets, so the sample conductivities in Figs.…”

Section: Review By River Valley Technologiesmentioning

confidence: 99%

“…Composite materials are revolutionising the aircraft industry, in both military and commercial aircraft applications [1,2]. The percentage of carbon fibre composites (CFCs) used in aircraft structures has increased in recent years, typically targeting weight reduction to meet global emission requirements.…”

Section: Introductionmentioning

confidence: 99%

“…For example, CFCs have been used for rotor banding on high-speed electric machines for containment [6]. Research has been conducted on lighting strike protection where CFCs have been used in aircraft structures and wind turbine blades [2,7]. Furthermore, research has also been undertaken for aircraft applications where CFCs have been investigated for potential use in de-icing applications.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental electrical characterisation of carbon fibre composites for use in future aircraft applications

Khan

Smith

Tuohy

et al. 2019

IET Science, Measurement & Technology

View full text Add to dashboard Cite

This paper presents experimental testing of samples from two unidirectional Carbon Fibre Composite (CFC) panels to determine the factors that influence the electrical properties of CFCs and to also determine the temperature coefficient of resistance. The CFC panels were manufactured by two different techniques to compare the impact of the manufacturing process on the electrical properties. Various electrical conductivity measurement methods were evaluated to determine the most consistent and accurate technique. The influence of sample geometry on the measured electrical conductivity was also investigated. Thermal imaging was used to image resistive losses and illustrate the current paths through the fibres within the CFC test samples. Finally, the effects of increasing temperature on the CFC samples are presented, illustrating that CFCs have a negative temperature coefficient .

show abstract

“…These two effects, namely some shielding -although limited -of thin metal layers, and the induced currents and voltages, compensate for each other up to a certain level. A comparable approach was published recently by people active in aerospace industry [119].…”

Section: The Challenge Of Composite Materials For Naval Shipsmentioning

confidence: 96%

Protection of electronics in composite structures against indirect lightning

Blaj¹

View full text Add to dashboard Cite

SummaryDamage resulting from an interaction with lightning current in a military naval vessel, especially in a conflict zone and at the time of a conflict, which leads to the incapacitation of vital activities on the ship, is unacceptable. Because many potential conflict zones are in littoral areas, and because of the increase in lightning activity, both now and expected in the years to come, the provision of protection for naval vessels sailing in those waters should be a high priority. The fact that many standards exclude both naval vessels and the littoral area transforms this work into a potential contemporary solution.With the knowledge about the formation of charge layers in the atmosphere, and about the influence such weather phenomena as fog, clouds, and aerosols have on the transport of additional charge particles, it is possible to understand the formation of lightning. A review of the existing thunderstorm prediction models, and finding a way to verify and update the accuracy of such, is equally important at this stage. Merely understanding the root cause of the problem will not be enough to solve the problem, and therefore an extensive evaluation of the available literature, with a special attention to standards, also has to take place. Evaluating risks and finding what was previously accomplished by others, and any stones they have left unturned, can improve the life expectancy of a system or building block when applying and improving the existing technology. Conventional lightning protection measures serve as points of departure to reach the goals of this research. Such issues as positioning, zoning, and proximity to other components more attractive to lightning strikes must not be overlooked since these are equally important. The rolling sphere concept, as described in civil standards, is applied to naval vessels, and serves now as a basic tool within THALES to estimate the risk of lightning, and possible damage and/or interference. Steps taken by other branches of industry in this direction is investigated too. Investigation and a thorough analysis of other protective methods will help to generate the right ideas to tackle the issue and to improve lightning protection of electronics enclosed by composite structures against both direct contact with the lightning current, and the indirect effects of the associated electric and magnetic fields. Diverters are used by the aircraft industry and the possible use to protect radars under a composite non-conducting radome has been investigated experimentally. The constant increase in our dependency on composite panels throughout many branches of industry, including the naval and maritime sectors, make it necessary to quantify and measure all the risks associated with lightning strikes. Evaluating risks, and where necessary fixing them, will guarantee the successful use of this technology. The lack of shielding properties, and the high likelihood of deterioration and damage as a result of a lightning attachment, mean improvements are essential to make the u...

show abstract

Study of Lightning Effects on Aircraft With Predominately Composite Structures

Cited by 18 publications

References 8 publications

Lightning Currents on Fastening Assemblies of an Aircraft Fuel Tank, Part I: Uncertainties Assessment With Statistical Approach

Lightning Currents on Fastening Assemblies of an Aircraft Fuel Tank, Part I: Uncertainties Assessment With Statistical Approach

Experimental electrical characterisation of carbon fibre composites for use in future aircraft applications

Protection of electronics in composite structures against indirect lightning

Contact Info

Product

Resources

About