국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	An Approach to Constrained Aerodynamic Design With Application to Airfoils
저자	Richard L. Campbell
Keyword	Airfoil design; Design method
URL	http://techreports.larc.nasa.gov/ltrs/PDF/tp3260.pdf
보고서번호	NASA TP-3260
발행년도	1992
출처	NASA Langley Research Center
ABSTRACT	An approach has been developed for incorporating flow and geometric constraints into the Direct Iterative Surface Curvature (DISC) design method. In this approach, an initial target pressure distribution is developed using a set of control points. The chordwise locations and pressure levels of these points are initially estimated either from empirical relationships and observed characteristics of pressure distributions for a given class of airfoils or by fitting the points to an existing pressure distribution. These values are then automatically adjusted during the design process to satisfy the flow and geometric constraints. The flow constraints currently available are lift, wave drag, pitching moment, pressure gradient, and local pressure levels. The geometric constraint options include maximum thickness, local thickness, leading-edge radius, and a ``glove" constraint involving inner and outer bounding surfaces. This design method has also been extended to include the successive constraint release (SCR) approach to constrained minimization.