A twin-engine, low-wing transport model, with a supercritical wing designed for a cruise Mach number of 0.77 and a lift coefficient of 0.55 was tested in the 16-Foot Transonic Tunnel at NASA Langley Research Center. The purpose of this test was to compare the wing/nacelle interference effects of superfans (very high bypass ratio turbofans, BPR = 18) with the interference effects of advanced turbofans (BPR = 6). Flow-through nacelles were used in this study. Forces and moments on the complete model were measured using a strain gage balance and extensive surface static pressure measurements (383 orifice locations) were made on the model’s wing, nacelles, and pylons. Data were taken at Mach numbers from 0.50 to 0.80 and model angle-of-attack was varied from −4° to +8°. Results of the investigation indicate that superfan nacelles can be installed with approximately the same drag penalty as conventional turbofan nacelles.
Skip Nav Destination
ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition
June 3–6, 1991
Orlando, Florida, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7899-6
PROCEEDINGS PAPER
Interference Effects of Very High Bypass Ratio Nacelle Installations on a Low-Wing Transport Free
Anthony M. Ingraldi,
Anthony M. Ingraldi
NASA Langley Research Center, Hampton, VA
Search for other works by this author on:
Timmy T. Kariya,
Timmy T. Kariya
Vigyan Research Associates, Inc., Hampton, VA
Search for other works by this author on:
Richard J. Re,
Richard J. Re
NASA Langley Research Center, Hampton, VA
Search for other works by this author on:
Odis C. Pendergraft, Jr.
Odis C. Pendergraft, Jr.
NASA Langley Research Center, Hampton, VA
Search for other works by this author on:
Anthony M. Ingraldi
NASA Langley Research Center, Hampton, VA
Timmy T. Kariya
Vigyan Research Associates, Inc., Hampton, VA
Richard J. Re
NASA Langley Research Center, Hampton, VA
Odis C. Pendergraft, Jr.
NASA Langley Research Center, Hampton, VA
Paper No:
91-GT-241, V002T02A017; 8 pages
Published Online:
March 10, 2015
Citation
Ingraldi, AM, Kariya, TT, Re, RJ, & Pendergraft, OC, Jr. "Interference Effects of Very High Bypass Ratio Nacelle Installations on a Low-Wing Transport." Proceedings of the ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition. Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery. Orlando, Florida, USA. June 3–6, 1991. V002T02A017. ASME. https://doi.org/10.1115/91-GT-241
Download citation file:
208
Views
Related Proceedings Papers
Related Articles
Interference Effects of Very High Bypass Ratio Nacelle Installations on a Low-Wing Transport
J. Eng. Gas Turbines Power (October,1992)
Airframe/Propulsion Integration at Transonic Speeds
J. Eng. Gas Turbines Power (January,1991)
Surface Shear Stress and Pressure Measurements in a Turbine Cascade
J. Turbomach (July,2009)
Related Chapters
Experimental Investigation of Ventilated Supercavitation Under Unsteady Conditions
Proceedings of the 10th International Symposium on Cavitation (CAV2018)
A Simple Carburetor
Case Studies in Fluid Mechanics with Sensitivities to Governing Variables
QRAS Approach to Phased Mission Analysis (PSAM-0444)
Proceedings of the Eighth International Conference on Probabilistic Safety Assessment & Management (PSAM)