Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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A Comparison Study on the Semi-empirical Analysis Approach for the Flight Characteristics of a Light Airplane

경비행기의 비행특성 분석 및 준경험적 분석 방법 비교

  • Received : 2021.09.13
  • Accepted : 2022.05.08
  • Published : 2022.06.30
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Abstract

In this study, for development of the MDO (Multi Disciplinary Optimization) framework, the flight dynamic characteristic parameters of the ChangGong-91, a light aircraft, were extracted by an analytical method based on various semi-empirical methods, and the flight test method was compared and evaluated. The semi-empirical analysis methods for comparative subjects were the Perkins method, McCormick method, and Smetana method. The major stability/control derivatives and dynamic factors were calculated, using each method. As the comparison criteria, the flight test derivative estimates and dynamic factors were processed, using the output error method. Additionally, the flight characteristics of the light aircraft were analyzed and evaluated according to the provisions of the Korean Airworthiness Standard (KAS) of the Ministry of Land, Infrastructure and Transport, and MIL-F-8785C for the U.S. military.

본 연구에서는 MDO 프레임워크 개발을 위하여 다양한 준경험적 방법에 근거한 해석적 방법으로 경비행기인 창공-91의 비행운동 특성 파라미터를 추출하고 비행시험 방법을 기준으로 비교하여 평가하였다. 비교 대상의 준경험적 분석 방법은 Perkins 방법, McCormick 방법, 그리고 Smetana 방법이며, 각각의 방법을 통하여 주요 안정성/조종성 미계수와 동안정 계수를 산출하였다. 이에 대한 비교 기준은 비행시험을 수행하여 취득한 데이터로부터 출력오차방법을 활용하여 비행운동 미계수와 동안정 계수를 추출하였다. 아울러 경비행기의 비행특성을 우리나라 국토교통부의 항공기기술기준(KAS, Korean Airworthiness Standard)의 항목과 미 군용의 MIL-F-8785C의 기준으로 분석하여 평가하였다.

Keywords

Acknowledgement

본 논문은 과학기술정보통신부 한국항공우주연구원 연구운영비 지원사업 (기본사업)의 지원을 받아 수행된 연구결과입니다 (과제명 : UAM 항공기 설계를 통한 다분야 최적설계(MDO) 시스템 개발).

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