In message , "Gord
writes
I know that the shackles in the bomb-bays of the Lancasters,
Neptunes and Argus all had an electrical solenoid holding the end
of the arming wire in the shackle. When a 'safe drop' was needed
then this solenoid was powered which allowed the arming wire to
be pulled out of the shackle when the bomb was released therefore
the bomb wouldn't arm itself.

Same with the EMRUs (electromagnetic release units) and other launch
systems the kit I worked on interfaced with. "Safe jettison" was an
absolute requirement.


--
When you have to kill a man, it costs nothing to be polite.
W S Churchill

Paul J. Adam MainBoxatjrwlynch[dot]demon{dot}co(.)uk