국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Aerodynamic Characteristics of a Three-Dimensional HLFC wing in Transonic Flow
저자	Yoji Ishida, Masayoshi Noguchi, Koichi Suzuki
Keyword	Hybrid Laminar Flow Control; Drag reduction; Transonic flow
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr0001385t.pdf?id=NALTR0001385T
보고서번호	NAL TR-1385T
발행년도	1999.05
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	We have made a transonic wind tunnel test of an HLFC wing model with a new leading edge suction system incorpolated with a natural laminar flow airfoil to check mainly a drag reducing effect of the suction system in transonic Mach number range. The test has confirmed that the system works well on both design and off-design conditions: it can produce significant drag reduction in a wake drag with even small amount of suction quantity. Besides the drag reducing effect, it is found that the system produces considerable lift increase for some suction quantity range in wide range of test Mach number. The lift increment generates higher L/D value than that expected from only the drag reduction.