Noise and Vibration Control Techniques for the U. S. Navy 3000-LT Surface-Effect Ship
The Navy 3000-LT Surface-Effect Ship (3KSES) Program has provided a major advance in the development of high-performance ship technology in many areas. One such area is noise and vibration control techniques applicable to lightweight/high-power vehicles. New analytical methods have been evolved and substantial testing accomplished to support certain theoretical aspects of the analysis or to provide the necessary empirical data. This paper presents a summary of the technical approach used in the 3KSES Noise and Vibration Analysis, a description of the systems installed to achieve the desired acoustical control, and comparison of the predicted ship noise and vibration environment with the Navy specification. The noise sources considered are those related to the major machinery, that is, the gas turbine engines, the large lift fans, and the waterjet propulsors.