Abstract

This article is the second by Mr. Kuhns dealing with the problem of noise production in marine gearing, and its control. It should be read as a companion piece of the first which appeared in the August, 1937, issue of the Journal.In the introduction to the first article, it was explained that the acuteness of the noise problem brought about by the use of higher steam pressures, higher machinery speeds, and more compact machinery layouts in marine installations, is causing the most earnest study of it by all machinery designers and operators. Mr. Kuhns' long association with marine gear manufacture permits him to speak with authority on the subject.The first article contained a statement of the problem, and a general discussion of the methods and apparatus at hand to combat it. This article follows up with a study of the data which was taken in specific cases, and draws certain conclusions which may be incorporated in future design. The Farrel‐Birmingham Company is to be congratulated on the progressive steps it has taken in the attempt to clarify and isolate the confusing factors which so often combine to turn a normal gear assembly into an irritating noise‐maker.

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