Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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A Study on Electromagnetic Environmental Effects(E3) Test and Evaluation of a Commercial Derivative Military Aircraft

상용파생 군용항공기의 전자기 환경 효과(E3) 시험 평가에 관한 연구

  • Kim, Junghoon (The 2nd Research and Development Institute, Agency for Defense Development) ;
  • Jung, Inhwan (The 2nd Research and Development Institute, Agency for Defense Development) ;
  • Lee, Kwangill (The 2nd Research and Development Institute, Agency for Defense Development) ;
  • Lee, Kyusong (The 2nd Research and Development Institute, Agency for Defense Development) ;
  • Oh, Seong (The 2nd Research and Development Institute, Agency for Defense Development)
  • 김정훈 (국방과학연구소 제2기술연구본부) ;
  • 정인환 (국방과학연구소 제2기술연구본부) ;
  • 이광일 (국방과학연구소 제2기술연구본부) ;
  • 이규송 (국방과학연구소 제2기술연구본부) ;
  • 오성 (국방과학연구소 제2기술연구본부)
  • Received : 2019.01.07
  • Accepted : 2019.03.22
  • Published : 2019.04.05
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Abstract

This paper presents guidelines for the verification test on electromagnetic environmental effects of a commercial derivative military aircraft. To prove the safety-of-flight of a renovated aircraft and appropriate working of electronic system/device, E3 test and analysis at the system level should be performed prior to its operations on real warfare. For the aircraft modified with Falcon 2000S, we concentrate on intra-system EMC, EMRADHAZ (Electromagnetic Radiation Hazards), electrical bonding, P-Static as test and lightning as analysis from a airworthiness certification point of view based on MIL-STD-464, MIL-HDBK-516. As a result, it is verified that the modified aircraft has enough electromagnetic compatibility capabilities under EME(Electromagnetic Environment). In the process, test and analysis methods considering shielding effectiveness(SE) are applied.

Keywords

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Fig. 2. Measurement results of SE for passenger windows

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Fig. 3. Falcon2000S aircraft before modification

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Fig. 4. Type Certificate for E3 & MIL-STD-464

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Fig. 5. Test setup of intra-system EMC in a anechoic chamber

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Fig. 6. Test setup of intra-system EMC in a hangar

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Fig. 7. Test setup of intra-system EMC during engine-run

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Fig. 8. Design & analysis process of lightning protection

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Fig. 9. Analysis of lightning strike zone

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Fig. 10. (a) Lightning zone, (b) zoom of lightning and (c) current path analysis

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Fig. 11. Critical current path of Fig. 10 (c)

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Fig. 13. Exposure reference level of Zone 1

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Fig. 14. Measurement points

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Fig. 15. Generic test setup for HERO verification

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Fig. 16. Proposed test & verification procedure for HERO

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Fig. 1. (a) Shape of passenger window, (b) applied mesh on it, and (c) measurement of SE

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Fig. 12. Measurement setup for precipitation static test

Table 1. Required SE for internal equipment test in aircraft

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Table 2. Range of E3 Test for the modified aircraft

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Table 3. Equipment list for intra-system EMC test

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Table 4. Results of temperature rise and voltage drop for bonding strap & lightning diverter

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Table 5. Measured electric field maximum levels

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Table 6. Results of temperature rise and voltage

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Table 7. Received powers and safety margins of fuel injection position vs transmitter

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References

  1. MIL-HDBK-516B, Airworthiness Certification Criteria Expanded Version, Sep. 2005.
  2. MIL-STD-461F, Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment, Dec. 2007.
  3. MIL-STD-464C, Electromagnetic Environmental Effects Requirements for Systems, Dec. 2010.
  4. J. H. Kim, I. H. Jung, K. S. Lee and S. C. Ryu, "EMI Test limits of Radiated Susceptibility and Shielding of Passenger Window for Equipment and Subsystems installed in Aircraft, Air Force," KIMST Annual Conference Proceedings, pp. 691-692, Nov. 2016.
  5. SAE ARP 5583, Guide to Certification of Aircraft in a High Intensity Radiated Field(HIRF) Environment.
  6. J. H. Kim, I. H. Jung, K. I. Lee and K. S. Lee, "Lightning Protection Design of Non-Metallic Mountings on Aircraft Skin," JKEES Annual Conference Proceedings, p. 382, Aug. 2017.
  7. J. H. Kim, I. H. Jung, K. I. Lee K. S. Lee and S. C. Ryu, "Safety Margin Test and Analysis CMDS in Aircraft, Air Force," JKEES Annual Conference Proceedings, pp. 794-795, Nov. 2017.