Deep-submergence applications

Marine applications of wrought Ti-6A1-4V include armaments, sonar equipment, deep-submergence applications, hydrofoils, and capsules for telephone-cable repeater stations. Casting applications include water-jet inducers for hydrofoil propulsion and seawater ball valves for nuclear submarines. 

The major advantage of syntactic foams is the high strength-to-weight ratios. This advantage has ied to applications in deep-submergence vehicles for hydrospace use (7), aerospace applications such as interior floor panels of aircraft (8), nose cones, fins, and bodies of rockets, sonar windows (some acoustic properties of the foam are similar to those of sea water, radomes, etc. (11). 

Table 45 shows that epoxy syntactic foam prepreg can be used for deep-sea applications. For example, an outer hull of Synpreg 7801 can be applied to deep-submergence vehicles to be used at a depth of 20,000 ft. 

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