Comparison of experimental and numerical results for transient electromagnetic fields induced on a scale model aircraft by current-injection technique

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Comparison of experimental and numerical results for transient electromagnetic fields induced on a scale model aircraft by current-injection technique

Grando, J. / Labaune, G. / Alliot, J.C. / Issac, F. / Delannoy, A.

A scale model of the Transall C160 military aircraft, 1/10 of the actual, was installed above a large copper ground plate and connected to it. The entry point at the nose was hard-wire connected to a 12- mu F/5-kV capacitor bank, and the current pulse launch was made using a triggered atmospheric-pressure spark gap. The exit point at the tail or at the left wing tip, depending on the configuration, was connected to the ground plate via an 80- Omega waveshaping resistor. The transient electromagnetic fields on the outer skin of the model were measured using D-dot and B-dot sensors. Three D-dot sensors were mounted on the forward upper fuselage, on the top and the bottom of the left wing. Two B-dot sensors were mounted on the forward upper fuselage and on the top of the left wing. The current was also measured using three i-dot sensors mounted on the nose boom, on the left wing tip, and on the tail boom. A comparison of experimental and computed electromagnetic fields on the scale model was performed for two experimental configurations of current injection: nose to tail and nose to left wing. As shown for one typical case, all the data were predicted with excellent frequency agreement and very good amplitude agreement.

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Title :

Comparison of experimental and numerical results for transient electromagnetic fields induced on a scale model aircraft by current-injection technique

Additional title:

Vergleich der experimentellen und numerischen Ergebnisse von transienten elektromagnetischen Feldern, die durch ein Skalen-Flugzeug-Modell induziert wurden

Contributors:

Grando, J. (author) / Labaune, G. (author) / Alliot, J.C. (author) / Issac, F. (author) / Delannoy, A. (author)

Published in:

AP-S International Symposium ; 3 ; 1751-1754

Publication date :

1989

Size :

4 Seiten

Type of media :

Conference paper

Type of material :

Language :