Electromagnetic Launch Vehicle Fairing and Acoustic Blanket Model of Received Power using FEKO
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Electromagnetic Launch Vehicle Fairing and Acoustic Blanket Model of Received Power using FEKOAbstract
Evaluating the impact of radio frequency transmission in vehicle fairings is important to electromagnetically sensitive spacecraft. This study employs the multilevel fast multipole method (MLFMM) from a commercial electromagnetic tool, FEKO, to model the fairing electromagnetic environment in the presence of an internal transmitter with improved accuracy over industry applied techniques. This fairing model includes material properties representative of acoustic blanketing commonly used in vehicles. Equivalent surface material models within FEKO were successfully applied to simulate the test case. Finally, a simplified model is presented using the Nicholson Ross Weir derived blanket material properties. These properties are implemented with the coated metal option to reduce the model to one layer within the accuracy of the original three layer simulation.
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References
R. Brewer and D. Trout, “Modern Spacecraft,
Antique Specifications,” 2006 IEEE International
Symposium on Electromagnetic Compatibility, pp.
-218, Aug, 2006.
K. Bahadori and Y. Rahmat-Samii, “Estimation of
blockage effects of complex structures on the
performance of the spacecraft reflector antennas
by a hybrid PO/NF-FF Method,” Applied
Computational Electromagnetic Society (ACES)
Journal, March 2007, vol. 22, no. 1, pp. 31-38.
I. Gonzalez, E. Garcia, F. Saez de Adana, and M.
F. Catedra, “MONURBS: A Parallelized Fast
E-10
E-09
E-08
E-07
E-06
E-05
E-04
E-03
E-02
60 2.80 3.00
power (watts)
frequency (GHz)
test data
-Lyr
NRW 1/6
NRW 3 sd
ACES JOURNAL, VOL. 26, NO. 12, DECEMBER 2011
Multipole Multilevel Code for Analyzing
Complex Bodies Modeled by NURBS Surfaces,”
Applied Computational Electromagnetic Society
(ACES) Journal, January 2008, vol. 23, no. 2, pp.
-142.
D. H. Trout, J . E. Stanley,and P. F. Wahid,
“Electromagnetic Launch Vehicle Fairing and
Acoustic Blanket Model of Received Power using
FEKO,” ACES Conference, March 2011.
D. H. Trout, P. F. Wahid, and J. E. Stanley,
“Electromagnetic Cavity Effects from
Transmitters Inside a Launch Vehicle Fairing,”
IEEE EMC Symposium Austin: IEEE, 2009,in
Proc of IEEE EMC Symp. on EMC, Austin, 2009,
pp. 70-74.
M. Kandula, K. Hammad,and P. Schallhorn,
“CFD Validation with LDV Test Data for
Payload/Fairing Internal Flow,” Proc. AIAA,
-4910-9151.
ETS Lindgren Website on double ridged
waveguide horn, EMCO 3115, User Manual.
[Online]. Available:http://www.ets-
lindgren.com/manuals/3115.pdf.
FEKO User’s Manual, July 2008.
U. Jakobus, “Comparison of Different Techniques
for the Treatment of Lossy Dielectric/Magnetic
Bodies within theMethod of Moments
Formulation," AE ̈U International Journal of
Electronics and Communications, 2000, iss. 3,
vol. 54, pp. 163-173.
U. Jakobus, J. Tonder, and M. Schoeman,
“Advanced EMC Modeling by Means of a
Parallel MLFMM andCoupling Network
Theory,” IEEE Internaltion Symposium on EMC,
August 2008, pp. 1-5.
J . E. Stanley, D. H. Trout, S. K. Earles,I. N.
Kostanic, and P F. Wahid, “Analysis of Multi-
Layer Composite Cavity Using FEKO,” Applied
Computational Electromagnetic Society (ACES)
Journal, January 2010, iss. 1, vol. 25, pp. 69-74.
Y. Tsunemitsu, J. Hirokawa, M. Ando, Y. Miura,
Y. Kazama, and N. Goto, “Polarization Isolation
Characteristics Between Two Center-Feed Single-
Layer Waveguide Arrays Arranged Side-by-
Side,” Applied Computational Electromagnetic
Society (ACES) Journal, November 2006, vol. 25,
no. 3, pp. 240-247.
S. D. Keller, “Coplanar Waveguide Slot-coupled
Ka-band Patch Antenna for Integration with
Wafer-scale Beam-steering MEMS Control
Board,” Applied Computational Electromagnetic
Society (ACES) Journal, June 2008, vol. 23, no. 2,
pp. 177-183.
W. C. Chew, J. M. Jin, E. Michielssen, and J.
Song, Fast and Efficient Algorithms in
Computational Electromagnetics, Artech House,
Inc., Norwood, MA, 2001.
Rhode & Schwarz,Measurement of dielectric
material properties. s.l.: Application Center
Asia/Pacific, 2006. RAC0607-0019.
M. D. Deshpande and C. J. Reddy, “Application
of FEM toEstimate Complex Permittivity of
Dielectric Material at Microwave Frequency using
Waveguide Measurements,” NASA, Langley
Research Center, 1995.
D. A. Hill, M. T. Ma, A. R. Ondrejka, B. F.
Riddle, M. L. Crawford, andR. T. Jonk,
“Aperture Excitation of Electrically Large, Lossy
Cavities,” IEEE Trans. Electromagn. Compat.,
vol. 36, no. 3, pp. 169–177, Aug. 1994.
