Your name certainly looks familiar. I think you might be he.
Thank you for joining this discussion. I found your information to be very interesting and very eye opening.
Do you still have the pictures of the spar with the copper parts still attached to it? It was those pictures that convinced me that the thing was designed to blow up with the Sub still only a short distance away.
I don't know why the people of that era would not have recognized that as a suicide trap.
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Here's the simplest one:
In this laser-scanned image, the powder cannister was to the left. The explosion shoved the torpedo remains to the right -- back up the spar. The (unmoving) mounting bolt ripped a slot through the copper mounting sleeve as it was shoved away from the explosion. (Note the 30-degree angle of the folded-back remains of the copper canister and sleeve-mounting plate.)
Examples of some of our stepwise CAD analyses of the above dynamics:
Bottom line conclusions:
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I hope this clarifies the "Lanyard vs Contact" triggering question...
TXnMA