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Dynamometer-stand Investigation of the Muffler Used in the Demonstration of Light-airplane Noise Reduction
K. R. Czarnecki
Don D. Davis
出版
National Advisory Committee for Aeronautics
, 1948
URL
http://books.google.com.hk/books?id=tYVDAQAAIAAJ&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
註釋
The attenuation characteristics of the muffler used in the demonstration of light airplane noise reduction were investigated on the ground dynamometer stand at the Langley full-scale tunnel. Sound, back pressure, and engine power output were measured. The ground tests indicated that a reduction of 10 to 15 decibels was to be expected from this muffler.
