FDTD Simulation of Electromagnetic Noises from the Power Supply System Onboard Rocket and its Application to Shielding Techniques.

Accession number;03A0049497
Title;FDTD Simulation of Electromagnetic Noises from the Power Supply System Onboard Rocket and its Application to Shielding Techniques.
Author; OKADA TOSHIMI (Toyama Prefectural Univ. Coll. Engineering) TAKAGI KENJI (Toyama Prefectural Univ. Coll. Engineering) ARII JUN'ICHI (Toyama Prefectural Univ. Coll. Engineering) MIYAKE TAKETOSHI (Toyama Prefectural Univ. Coll. Engineering) ISHISAKA KEIGO (Toyama Prefectural Univ. Coll. Engineering) NAGANO ISAMU (Kanazawa Univ., Faculty of Engineering, JPN) TSURUDA KOICHIRO (Inst. Space and Astronautical Sci., JPN) HAYAKAWA HAJIME (Inst. Space and Astronautical Sci., JPN)
Journal Title;IEICE Transactions on Communications (Japanese Edition)
Journal Code:S0622C
ISSN:1344-4697
VOL.J86-B;NO.1;PAGE.116-120(2003)
Figure&Table&Reference;FIG.10, TBL.2, REF.4
Pub. Country;Japan
Language;Japanese
Abstract;On SRP-4 rocket to be examined at Araska rocket test project, a loop antenna capable of receiving long and middle waves is mounted in nose cone without electromagnetic shielding effects. As noise countermeasure for the loop antenna from source systems using DC/DC converters, FDTD simulations and noise measurements for them were carried out, to evaluate electromagnetic field distribution in the nose cone. As a result, some prescriptions such as 1) mounting an aperture drawing instrumentation line jointing a loop antenna and a receiver at a corner of the receiver case, 2) considering on shape of the aperture and its mounting direction so as to minimize its magnetic field level at antenna position by considering on vectors of equivalent noise currents overlapping to sources supplied to the receiver, and so on, could be obtained. Well, in this study, was considered a case storing whole of the wave receiver into a light weight aluminum case, to mount it at lower portion of the nose cone.
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