Design of a hybrid laminar flow control nacelleConsideration is given to the potential application of hybrid-laminar-flow control to the external surface of a modern, high-bypass-ratio (HBR) turbofan engine nacelle. With the advent of advanced ultra-HBR fans (with bypass ratios of 10-15), the wetted areas of these nacelles approach 10 percent of the total wetted area of future commercial transports. A hybrid-laminar-flow-control pressure distribution is specified and the corresponding nacelle geometry is computed utilizing a predictor/corrector design method. Linear stability calculations are conducted to provide predictions of the extent of the laminar boundary layer. Performance studies on an advanced twin-engine transport configuration are presented to determine potential benefits in terms of reduced fuel consumption.
Document ID
19920043629
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wie, Yong-Sun (High Technology Corp. Hampton, VA, United States)
Collier, Fayette S., Jr. (NASA Langley Research Center Hampton, VA, United States)
Wagner, Richard D. (NASA Langley Research Center Hampton, VA, United States)
Viken, Jeffery K. (NASA Langley Research Center Hampton, VA, United States)
Pfenninger, Werner (Analytical Services and Materials, Inc. Hampton, VA, United States)