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Old 09-05-2010, 11:12 AM
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Doug Sams Doug Sams is offline
Old Far...er...Rocketeer
 
Join Date: Mar 2005
Location: Plano, TX resident since 1998.
Posts: 3,837
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Quote:
Originally Posted by dcastle
...I realized that if I ever designed a launch control system, the safety interlock key must be placed with the launch button -- not on the launch pad.
Both. You want it on both. When you have a system where there's more than a few steps from controller to pad, the system must be disarm-able from either end. All the HPR stuff I have ever worked with had relayers, and all the relays had safing switches on them so the flyer can set up his rocket without worrying that someone at the rangehead may accidentally arm and fire his rocket.

The only downside to this is the long walk back to the pad to arm it after you've forgotten to And after you've waited thru an entire cycle of launching from that set of pads.

Doug

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