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Top-level
 @kenshirriff That thing about separating the rocket from the ground connection - in a lot of early NASA rocket launches there were incidents (explosions) due to the wield way the launch control/abort circuitry was set up, “sneak circuits” would occur when the rocket was taking off, like just as the rocket disconnected from the grounding plug at the bottom. I’m wondering if that instant severing of connections with the squib might’ve also been to prevent sneak circuits. 4 comments
@kenshirriff Document with a great example of a sneak circuit involving the cargo door and landing gear in an aircraft. There are some other examples out there. If the emergency door open switch and the normal door open switch were operated, the landing gear would deploy. (Not a sneak circuit but there was an incredible wiring error in a train and a design flaw where sounding a whistle on a locomotive caused the carriages to decouple.)  @kenshirriff @DeltaWye I'm wondering if this still makes sense with modern computers clocking away at GigHz – would pyrotechnic be "fast enough"?  |
Gregory's Server
@DeltaWye That makes sense. Weird things could happen right at launch.