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Advanced electromagnetic methods for aerospace vehiclesThe Advanced Helicopter Electromagnetics (AHE) Industrial Associates Program has fruitfully completed its fourth year. Under the support of the AHE members and the joint effort of the research team, new and significant progress has been achieved in the year. Following the recommendations by the Advisory Task Force, the research effort is placed on more practical helicopter electromagnetic problems, such as HF antennas, composite materials, and antenna efficiencies. In this annual report, the main topics to be addressed include composite materials and antenna technology. The research work on each topic has been driven by the AHE consortium members' interests and needs. The remarkable achievements and progresses in each subject is reported respectively in individual sections of the report. The work in the area of composite materials includes: modeling of low conductivity composite materials by using Green's function approach; guidelines for composite material modeling by using the Green's function approach in the NEC code; development of 3-D volume mesh generator for modeling thick and volumetric dielectrics by using FD-TD method; modeling antenna elements mounted on a composite Comanche tail stabilizer; and antenna pattern control and efficiency estimate for a horn antenna loaded with composite dielectric materials.
Document ID
19940020226
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Balanis, Constantine A. (Arizona State Univ. Tempe, AZ, United States)
Sun, Weimin (Arizona State Univ. Tempe, AZ, United States)
El-Sharawy, El-Budawy (Arizona State Univ. Tempe, AZ, United States)
Aberle, James T. (Arizona State Univ. Tempe, AZ, United States)
Birtcher, Craig R. (Arizona State Univ. Tempe, AZ, United States)
Peng, Jian (Arizona State Univ. Tempe, AZ, United States)
Tirkas, Panayiotis A. (Arizona State Univ. Tempe, AZ, United States)
Andrew, William V. (Arizona State Univ. Tempe, AZ, United States)
Kokotoff, David (Arizona State Univ. Tempe, AZ, United States)
Zavosh, Frank (Arizona State Univ. Tempe, AZ, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1993
Subject Category
Mechanical Engineering
Report/Patent Number
NAS 1.26:195111
NASA-CR-195111
TRC-EM-CAB-9401
Accession Number
94N24699
Funding Number(s)
CONTRACT_GRANT: NAG1-1082
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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