1.

Technical Paper
Technical Paper
1. Effect of two advanced noise reduction technologies on the aerodynamic performance of an Ultra High Bypass ratio fan
Hughes, Christopher E. ; Gazzaniga, John A.
Pub. info.: AIAA meeting papers on disc.  2009.  Reston, Va..  American Institute of Aeronautics and Astronautics
Title of ser.: AIAA Paper : AIAA/CEAS Aeroacoustics Conference
Ser. no.: 2009
2.

Technical Paper
Technical Paper
2. Aeroacoustic Effects of Reduced Aft Tip Speed at Constant Thrust for a Model Counterrotation Turboprop at Takeoff Conditions
Woodward, Richard P. ; Hughes, Christopher E.
Pub. info.: NASA Technical Reports.  (NASA-TM-103808),  pp.1-21,  1990.  National Aeronautics and Space Adminstration
3.

Technical Paper
Technical Paper
3. Cruise Noise Measurements of a Scale a Model Advanced Ducted Propulsor
Dittmar, James H. ; Hughes, Christopher E. ; Bock, Lawrence A. ; Hall, David G.
Pub. info.: NASA Technical Reports.  (NASA-TM-105806),  pp.1-12,  1993.  National Aeronautics and Space Adminstration
4.

Technical Paper
Technical Paper
4. FLOWFIELD MEASUREMENTS IN THE NASA LEWIS RESEARCH CENTER 9- BY 15-FOOT LOW-SPEED WIND TUNNEL
Hughes, Christopher E.
Pub. info.: NASA Technical Reports(N89).  (NASA-TM-100883),  pp.1-78,  1989.  National Aeronautics and Space Administration