Mechanism for Deep-Ocean-Instrumentation Quiet, Remote Release.
NAVAL RESEARCH LAB WASHINGTON D C
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Deep-ocean instruments, after completion of their mission, need a releasable link to separate them from their anchors. The Naval Research Laboratory has developed a quiet, remotely controllable release which upon command frees the buoyantly supported instrument package to float to the surface. A standard-threaded bolt with its segmented nut, banded by a plastic tape, supports the load. With the application of a low-voltage current to a resistance wire looped between the layers of spiraled tape, the generated heat melts the tape at the segments junctions. The fragmented nut slips from the bolt, disengaging the fastened members of the system from each other. Author
- Marine Engineering