NZP Ceramic Lined Exhaust and Intake Ports for High Performance Military Diesel Engines

Not Available This program will evaluate three submarine coating concepts, one that optimizes current systems and two representing entirely new classes of treatments. These are based on the precept that the limiting factor for coatings is the fundamental connection between static and dynamic properties which often requires that the most effective treatments have the greatest ship impact. The fundamental governing relationships are (for treatments in which the properties vary slowly with frequency, including modern designs) dictated by the requirement that the static modulus cannot exceed the dynamic modulus. This consequence of linear system causality is difficult to circumvent. The first concept is an optimization of the ratio of static to dynamic moduli of current coating concepts by crosslinking during or immediately after installation. The second employs embedded resonant structures with rapidly varying properties with frequency which can be stiffer statically than dynamically. Both macroscopic and microscopic resonant structures (using MEMS technology) will be evaluated. The third concept is a radically different coating system which decouples the submarine in a manner which may have controllable ship impact and may be amenable to mechanical attachment methods. The result of Phase I will be a downselect to one or possibly two concepts for demonstration in Phase II.