Nacelle/pylon interference study on a 1/17th-scale, twin-engine, low-wing transport modelNASA-Langley has conducted wind tunnel tests of a twin-engine, low-wing transport aircraft configuration with 10.8-aspect ratio supercritical wing, in order to ascertain and compare the wing/nacelle interference effects of through-flow nacelled simulating 'superfan' very high bypass ratio (BPR=20) turbofans and current-technology (BPR=6) turbofans. Measurements of model forces and moments have been obtained, together with extensive external static pressure measurement on the model's wings, nacelles, and pylons in the Mach 0.5-0.8 range, at angles of attack in the -4 to +8 deg range. The superfan nacelles exhibit a significant advantage over current-technology turbofan nacelles, when the superfan's SFC gains are taken into account.
Document ID
19890059493
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pendergraft, Odis C., Jr. (NASA Langley Research Center Hampton, VA, United States)
Ingraldi, Anthony M. (NASA Langley Research Center Hampton, VA, United States)
Re, Richard J. (NASA Langley Research Center Hampton, VA, United States)
Kariya, Timmy T. (Vigyan Research Associates, Inc. Hampton, VA, United States)