In-Cylinder Pressure Sensors Using Thin Film Shape Memory Alloys

Not Available The U.S. Navy uses fill fluids in their sonar towed arrays to provide high quality sonar performance, proper buoyancy, and corrosion protection for the sonar electronic components. The currently used fluid, Isopar L, poses two environmental hazards, the first to humans during the filling operation, and the second to the marine environment as a result of accidental leakage. In this Phase I program, Foster-Miller proposes to identify an inherently more environmentally friendly fill fluid using a computer model based on group contribution theory. The five most promising candidates will then be tested in the laboratory for key physical, chemical, and environmental properties. After identifying a new fill fluid, Foster-Miller will then develop one or more innovative additives for the fill fluid that will minimize the environmental impact of a leak or spill in the marine environment. These additives will create a fill fluid system that is self-remediating, making the fluid non-persistent. At the conclusion of the Phase I program with Option, a new fluid will have been identified and several concepts for self-remediation will have been surveyed for further development. In the Phase II program, the development and optimization of the self-remediating additives will be performed.