Dynamometer-stand investigation of the muffler used in the demonstration of light-airplane noise reduction

K. R. Czarnecki, Don D. Davis, Jr
naca-tn-1688
Oct 1948


As part of a general investigation directed toward the reduction of airplane noises, tests were made on a ground dynamometer stand of a muffler designed for an army liaison-type airplane.

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1948/naca-tn-1688.pdf