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Instrument Flight Certification Process and Flight Test Results of Korean Utility Helicopter

한국형 기동헬기 계기비행 인증절차 및 비행시험 결과

  • Kwon, Hyuk-Jun (The 7th R&D Institute, Agency for Defense Development) ;
  • Park, Jong-Hoo (The 7th R&D Institute, Agency for Defense Development) ;
  • Park, Jae-Young (The 7th R&D Institute, Agency for Defense Development)
  • Received : 2013.11.13
  • Accepted : 2014.01.26
  • Published : 2014.02.01

Abstract

In this paper, the instrument flight certification process and flight test results of Korean Utility Helicopter (KUH) are presented. For the instrument flight certification, the suitability of installed equipments and instruments have been reviewed and verified by ground and flight tests. Next, static and dynamic stability test are conducted in accordance with FAR-29 Appendix B. The static stability is determined by the change of speed and attitude according to control inputs. The dynamic stability is evaluated by how quickly the response of the helicopter due to long and short period control inputs are decreased. The pilot workload evaluation are also carried out by simulated IMC flight tests. This paper presents the workload assessment results when some failures are occurred at cockpit instruments, engine or flight control systems as well as the normal situation. After the simulated IMC flight test is completed, actual instrument flight test are conducted in a real IMC environment according to the air traffic controls.

본 논문에서는 한국형 기동헬기의 계기비행 인증절차 및 주요 비행시험 결과를 제시하였다. 한국형 기동헬기의 계기비행 인증을 위해 장착된 계기 및 장비의 적합성을 검토하였으며, 지상 및 비행시험을 통해 검증하였다. 아울러 항공기가 충분한 종축, 횡축 및 방향축에 대한 정안정성 및 동안정성을 보유하고 있는지를 확인하기 위해 FAR-29 Appendix B에 따라 시험을 실시하였다. 정안정성은 주로 조종입력에 대한 항공기의 속도 및 자세 변화를 통해 판단하였으며, 동안정성은 장주기 및 단주기 입력 후 항공기 거동이 얼마나 빨리 수렴하는지를 통해 평가하였다. 조종사의 임무부하 평가는 IMC 모사 비행시험을 통해 이뤄졌다. 본 논문에서는 항공기가 정상적인 상황뿐만 아니라 비행조종, 엔진 및 계기 등에 고장이 발생한 상황에 대한 임무부하 평가결과도 함께 제시하였다. IMC 모사 비행시험이 완료된 이후에는 실제 IMC 환경에서 항공관제에 맞춰 실제 계기비행시험을 실시하였다.

Keywords

References

  1. FAA Federal Aviation Regulations, 14 CFR, Part 27, Airworthiness Standards: Normal Category Rotorcraft (Amendment 44), 2008.
  2. FAA Federal Aviation Regulations, 14 CFR, Part 29, Airworthiness Standards: Transport Category Rotorcraft (Amendment 51), 2008.
  3. Riser, B., "Instrument Meteorological Conditions (IMC) Certification of the MH-60S Helicopter Common Cockpit," Society of Flight Test Engineers 33rd Annual International Symposium, Baltimore, 19-22 Aug. 2002.
  4. AC 29-2C Certification of Transport Category Rotorcraft (Change 3), Federal Aviation Administration, 2008.
  5. Delucien, A. G., Green, D. L., Jordan, S. W., and Traybar, J. J., Workload and the Certification of Helicopters for IFR Operation, FAA-RD-79-64, 1979.
  6. Roscoe, A. H., and Ellis, G. A., "A subjective rating scale for assessing pilot workload in flight: A decade of practical use," Bedford, UK: Royal Aerospace Establishment, 1990.

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