• 제목/요약/키워드: Winter Season Operational Capability

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Development of Auxiliary Heater to Improve Korean Medical Evacuation Helicopter Winter Operational Capability

  • Kim, Se Un;Koo, Jeong Mo;Seo, Jeong Mi;Jeong, Won Chae
    • 항공우주시스템공학회지
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    • 제14권6호
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    • pp.10-17
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    • 2020
  • The Korean medical evacuation helicopter was developed based on the Korean Utility Helicopter (hereafter referred to as 'Surion'). It uses an auxiliary power unit and engine for heating during winter operation. The helicopter maintains the internal temperature of the aircraft using its bleed air to satisfy its operational capability. However, due to the air inflow through the gap between the aircraft skin and door, additional heating for operating the portable medical equipment and preventing hypothermia in evacuated patients is required. Accordingly, an electric auxiliary heater was developed for additional heating during winter operation, and environmental, durability, and performance tests were conducted per MIL-STD-810G and MIL-STD-461F. The auxiliary heater was verified per the tailored airworthiness certification criteria.

한국형 기동헬기 동계운용능력 향상을 위한 플래퍼밸브 개선연구 (A Study on Winter Season Usability Performance Improvement of Flapper Valve for KUH-1)

  • 최재형;장인기;심대성;안정민
    • 한국항공우주학회지
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    • 제44권1호
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    • pp.49-56
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    • 2016
  • 한국형 기동헬기(KUH-1)에 적용된 플래퍼밸브는 환경제어계통 장비로서 조종사의 임무수행에 핵심적인 장비이다. 플래퍼밸브는 조종사 및 승무원에게 난방, 환기, 공기조절기능을 가지고 있고, 항공기 내부온도를 유지시킴으로서 조종사 및 병력의 작전 운용능력을 만족시킨다. 본 논문에서는 플래퍼밸브의 비행시험 지적사항을 발생원인 별로 분류하고, 각 지적사항에 대한 고장탐구 수행과정을 정리하였다. 또한, 고장탐구 내용을 바탕으로 도출한 설계개선 사항과 개선사항에 대한 저온비행시험 검증 결과를 함께 기술하였다.