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Overview

Mr. Fischer is a twenty-six year veteran and has worked in all areas of acoustics. He has a M.S in Ocean Engineering from the University of Massachusetts. His experience includes work in the design, development, and diagnostics aspects of this field. Mr. Fischer's areas of expertise covers machinery noise control projects in commercial, industrial, and marine fields.

Mr. Fischer has published many articles on these topics in professional journals. He has also developed innovative approaches to deal with complex acoustic issues. In most cases, he has succeeded in balancing noise requirements with non-acoustic constraints on space, weight, maintainability, and cost. Over the last twenty years, he has developed, maintained and upgraded computer models used to predict resulting noise for various sources and transmission paths.

Education

Professional Responsibilities and Projects

Mr. Fischer is extensively involved with the prediction of radiated noise, sonar self noise, habitability noise, aural detectability and structural vibrations on a large variety of vessels. He has also directed many shipboard noise and vibration measurements for demonstration of compliance with habitability criteria, for diagnostics testing and to verify noise modeling techniques. His area of specialty includes design, development, and noise control engineering to solve noise and vibration problems in small high-speed craft, yachts, work boats, ice breakers, naval surface ships, submarines and other non-conventional vessels.

Mr. Fischer is involved in the design, installation and testing of numerous isolation systems, including single and double stage stanchion isolation systems. He is also directing machinery condition monitoring systems for several marine operators. Other types of projects include industrial and construction site noise control, environment noise evaluation abatement, and design of acoustic test facilities.

Mr. Fischer has co-authored a technical document for SNAME entitled “Design Guide for Shipboard Airborne Noise Control, “TR-3 37”, January 1983 and is currently up-dating this document at the request of the US Navy. He has also contributed to the development of several design guides for the US Navy and Canadian Navy. Based on these documents, Mr. Fischer and two other lecturers offer a short course at State College, PA. He develops, maintains, and updates computer models, SNAP-Ship Noise Analysis Program, prediction techniques, accounts for both airborne and structureborne source, path, and receiver characteristics.

Mr. Fischer has implemented four-pole lumped and distributed parameter vibration prediction models. He has contributed to the implementation of SEA models that apply to habitability noise and underwater radiated noise predictions for marine vehicles, including the USNS HAYES. Finite Element Analysis methods have applied to hull, mast and house vibration predictions.

Noise control treatments have been successfully designed and installed on advised light weight craft such as Surface Effect Ships (SESs), helicopters (Bell Ranger), hydrofoils (PHM), and small water craft. Diagnostic tests have been conducted on private aircraft in support of an on-going ADE Development Corp. program to reduce noise on these craft.

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