Preliminary Report on Proposed Baffled Noise Abatement Structure

摘要

A preliminary concept for an artillery noise abatement structure is presented. The structure is a sand-covered oval corrugated steel arch structure with transverse baffles and is designed to act like a reactive muffler. The structure can accommodate a battle tank and provides clearance for target practice. The results of an acoustical 1/200 scale model test by the Georgia Institute of Technology are presented and assessed, together with available full scale test data from other types of artillery mufflers. It is concluded that the data from the model test and other available information are encouraging enough to justify the continuation of the study of a baffled tunnel structure.