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A theoretical analysis of the electromagnetic environment of the as330 super puma helicopter external and internal coupling
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Flourens, F. Gauthier, D. Morel, T. Serafin, D. |
| Copyright Year | 1991 |
| Description | Numerical techniques such as Finite Difference Time Domain (FDTD) computer programs, which were first developed to analyze the external electromagnetic environment of an aircraft during a wave illumination, a lightning event, or any kind of current injection, are now very powerful investigative tools. The program called GORFF-VE, was extended to compute the inner electromagnetic fields that are generated by the penetration of the outer fields through large apertures made in the all metallic body. Then, the internal fields can drive the electrical response of a cable network. The coupling between the inside and the outside of the helicopter is implemented using Huygen's principle. Moreover, the spectacular increase of computer resources, as calculations speed and memory capacity, allows the modellization structures as complex as these of helicopters with accuracy. This numerical model was exploited, first, to analyze the electromagnetic environment of an in-flight helicopter for several injection configurations, and second, to design a coaxial return path to simulate the lightning aircraft interaction with a strong current injection. The E field and current mappings are the result of these calculations. |
| File Size | 4306655 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910023387 |
| Archival Resource Key | ark:/13960/t0ns5nz0x |
| Language | English |
| Publisher Date | 1991-08-01 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Penetration Helicopters Lightning Finite Difference Theory Apertures Electromagnetic Pulses Huygens Principle Mathematical Models Electromagnetic Fields Computer Programs Electromagnetic Coupling Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
