TY  - RPRT
TI  - Reduction of blade-vortex interaction noise using higher harmonic pitch control
AU  - Brooks, Thomas F.
AU  - Booth, Earl R., Jr.
AU  - Jolly, J. Ralph, Jr.
AU  - Yeager, William T., Jr.
AU  - Wilbur, Matthew L.
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19890018094
ID  - 19890018094
ER  -