Abstract
아음속풍동을 이용한 항공기 모델의 공력 측정 시험에 있어 시험 모델의 제작에서부터 자료 획득, 처리 및 표현에 이르는 일련의 모든 과정은 오차를 수반하고 있다. 따라서 시험에서 얻어진 최종적인 공력 결과를 신뢰하고 실제 항공기의 공력 특성으로 사용하기 위해서는 측정결과에 대한 불확도 정도를 알아야 한다. 본 논문에서는 아음속풍동 시험에서 공력 계수 측정에 적용되는 불확도 분석 및 표현 방법에 대하여 나타내었다. Aerodynamic results for an airplane model produced in a subsonic wind tunnel testing inadvertently include errors which are added during model preparation, data acquisition, manipulation, and/or describing the results. Predicting or analyzing uncertainty for the final results is necessary for trusting them and for applying them to real airplane. This paper describes the analytic and systematic method for calculating and describing the uncertainties of aerodynamic coefficients.
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