국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	High Subsonic and High Reynolds Number Wind Tunnel Tests of Two-dimensional Natural-Laminar-Flow Airfoils with Suction Boundary Layer Control
저자	Masayoshi NOGUCHI, Mamoru SATO, Hiroshi KANDA, Yoji ISHIDA
Keyword	Aerodynamics; NLF Airfoil; Suction BLC; High Reynolds Number
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr01204.pdf?id=NALTR0001204
보고서번호	NAL TR-1204
발행년도	1993.5
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	Wind tunnel tests in high subsonic and high Reynolds number flows were conducted using slotted,perforated,and solid-surface NLF airfoils to compare their drag characteristics with and without suction.The Mach number was varied from 0.6 to 0.85 and the Reynolds number from 6 to 20 million.The results show that a net drag redction of about 10％ was attained by suction despite the presence of severe adverse effects against laminarization in the wind tunnel test such as free-stream turbulence and roughness effects of suction holes or slots.