• Current Industrial and Technological Trends in Aerospace
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• v.7 no.1
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• pp.32-42
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• 2009

Required system and technology for the civil helicopter and the military helicopter are almost similar. A lot of mount helicopters are converted from military to civil, or converted oppositely, or new developed considering civil-military dual use in order to reduce development cost and period. In the case of converting the military to the civil, the military helicopters are developed based on sufficient requiring amount following conversion to the civil helicopters with minor modification. This paper presents the investigation and the analysis for the case and the approach of dual use helicopter development from military helicopters to civil helicopters.

• Defense and Technology
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• no.4 s.230
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• pp.76-83
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• 1998

전세계 군용헬기 생산업체들은 장차 사양길에 접어들 군용헬기 판매시장을 대체할 수 있는 확고한 민수분야의 활로를 모색하고 있으며, 민수시장 확보가 지연되는 경우 군용헬기 관련 대형사업의 축소, 취소, 종료 및 순연에 따른 막대한 손실을 감수해야하는 실정에 있으므로, 향후 우리가 군용헬기 개발 관련 방위력개선사업을 추진시 이와같은 국제적인 현실을 감안하는 것도 바람직 할 것으로 보인다.

• Defense and Technology
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• no.5 s.231
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• pp.46-55
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• 1998

전세계 군용헬기 생산업체들은 장차 사양길에 접어들 군용헬기 판매시장을 대체할수 있는 확고한 민수분야의 활로를 모색하고 있으며, 민수시장 확보가 지연되는 경우 군용헬기 관련 대형사업의 축소, 취소, 종료 및 순연에 따른 막대한 손실을 감수해야하는 실정에 있으므로, 향후 우리가 군용헬기 개발 관련 방위력개선사업을 추진시 이와같은 국제적인 현실을 감안하는 것도 바람직 할 것으로 보인다.

• Current Industrial and Technological Trends in Aerospace
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• v.8 no.1
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• pp.104-111
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• 2010

This paper deals with the world civil helicopter market scope, world market analysis based on the operating fleet ages, preconditions for market entry, and market forecast which are necessary for Korean industry to enter into world market. According to the analysis, the heavy single class demand is rapidly declined. The demand is moving toward the heavier class than that operated now. Korean industry had better have strategic positioning to heavy twin and light medium twin classes. A considerable amount of Korean civil helicopter based on Surion can be sold if there are appropriate efforts for price, specification, marketing strategy and so on.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.41 no.9
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• pp.726-733
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• 2013

The rotor blade of helicopter is the core component determining helicopter performance and requiring low noise and low vibration because the blade becomes the major source of noise during flight. The performance analysis of candidates rotor blades is very critical because LCH(Light Civil Helicopter) will be developed parallel with LAH(Light Armed Helicopter) as an international upgrade program based on the existing platform of foreign civil helicopter. This research was aimed to recognize the performance of the candidates rotor blades compared with the newly developed foreign rotor blades and to investigate the feasibility about developing korea unique shape rotor blades by analysis the rotor performance and noise. The result of this research can be used for the target performance index during negotiation with foreign helicopter company and developing korea unique shape rotor blades.

• Current Industrial and Technological Trends in Aerospace
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• v.2 no.2
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• pp.33-46
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• 2004

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2017.05a
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• pp.201-204
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• 2017

An comparative analysis between two engine type certification specifications which are FAR Part 33 and EASA CS-E has been performed to provide fundamental information for validity assessment of civil certified engine when it is installed to a military rotorcraft. The analysis result has been used to build a traceability information between CS-E and MIL-HDBK-516C by which the substantiation data for engine type certification can be used as parts of aircraft propulsion system airworthiness substantiation.

• Current Industrial and Technological Trends in Aerospace
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• v.5 no.1
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• pp.25-31
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• 2007

헬리콥터와 같이 비행 중 고장 또는 작동 불능 시 대처가 용이하지 않고 대형의 참사로 이어지는 비행체에 대해서는 안전이 최우선으로 고려되어야 한다. 미국의 국가교통안전위원회에서는 1963년부터 1997년까지 34년간 민간부문의 회전익기의 사고를 조사하여 분석한 바 있다. 본 논문은 터빈엔진 헬리콥터의 사고 동향을 파악하여 헬리콥터 안전 운항에 기여하고, 또한 한국형 중형 민수헬기를 개발하기에 앞서 주요 설계요소를 고려하기 위하여 NTSB에서 미국의 민수용 단발 및 쌍발 터빈 엔진 헬리콥터 사고에 대하여 유형별로 집계, 조사한 결과를 인용하여 전반적인 사고 경향, 사고 유형 또는 원인, 활동별, 운용 단계 별에 사고에 대하여 심층적으로 비교, 분석하였다.

• Defense and Technology
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• no.2 s.144
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• pp.24-35
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• 1991

MBB사의 연간 매출은 약 3조원(41억불)이며, 이 가운데 75%가 각종 국제협력사업에서 이루어지고 있다. 민수분야가 54%를 차지하고 있고, 특히 주목할만한 것은 매출액중 각종 개발관련사업이 24%의 높은 비율을 차지하고 있는 점이다. 앞으로 MBB는 현재 진행하고 있는 Airbus 여객기, Tornado 전투기, 각종 헬기 생산에 주력하면서 여객기 개발, 전투기 개발, 각종 헬기개발, 전투기 성능개량, 수송기 개발, TiltRotor기 개발, 각종 미사일 개발 그리고 위성시스템 개발에 전력을 경주할 것이다

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.50 no.3
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• pp.181-192
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• 2022

Active vibration control system(AVCS) for helicopter enables to control the vibration generated from the main rotor and has the superb vibration reduction performance with low weight compared passive vibration reduction device. In this paper, FxLMS algorithm-based vibration control software of the light civil helicopter tansmits the control command calculated using the signals of the tachometer and accelerometers to the circular force generator(CFG) is developed and verified. According to the RTCA DO-178C/DO-331, the vibration control software is developed through the model based design technique, and real-time operation performance is evaluated in PILS(processor in-the loop simulation) and HILS(hardware in-the loop simulation) environments. In particular, the reliability of the software is improved through the LDRA-based verification coverage in the PIL environments. In order to AVCS to light civil helicopter(LCH), the dynamic response characteristic model is obtained through the ground/flight tests. AVCS configuration which exhibits the optimal performance is determined using system optimization analysis and flight test and obtain STC certification.