Alan,
They're not actually dynamite; they're usually referred to as explosive
bolts or fasteners. They're designed with an explosive charge inside them
and a weak point to sever when the explosive is detonated by a remote
electrical switch either manually or computer controlled. They've been
used to separate one stage of a rocket from another, and I know they've been
proposed for separating an escape module from another vehicle. Some type
of explosive fastener must be used to release the ejection seat before it is
launched out of an aircraft.
One application I could see for them in subs would be to jettison control
arms, a motor, or some other appendage that got tangled in cables or
debris.
Jim
In a message dated 1/15/2012 2:48:45 P.M. Central Standard Time,
alanjames@xtra.co.nz writes:
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