Preliminary measurement of the noise from the 2/9 scale model of the large-scale advanced propfan (LAP) propeller, SR-7A
By: James H. Dittmar.
Contributors: Lewis Research Center.
Series: NASA technical memorandum -- 87116.
Publisher: National Aeronautics and Space Administration, Lewis Research Center
Published: 1985
Place of publication: [Cleveland, Ohio
Language: eng
Format: Microform
Subjects: Airplanes -- Turbine-propeller engines -- Noise.; Noise -- Measurement.; Design analysis.; Evaluation.; Helical flow.; Mach number.; Noise (sound); Noise reduction.; Predictions.; Prop-fan technology.; Propeller blades.; Scale models.; Supersonic speed.; Tip speed.; Wind tunnel tests.
Notes: Microfiche. [Washington, D.C. : National Aeronautics and Space Administration], 1986. 1 microfiche.