10-08-2017, 09:38 PM
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Master Modeler
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Join Date: Jan 2009
Location: Fairbanks, Alaska
Posts: 6,507
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Quote:
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Originally Posted by Dugway
...four digit code each time it's activated. I would argue that this a safer than a simple "rod" key, but others may disagree. There is also a unique password for each switch, so no chance of interference between devices. You also get continuity and battery voltage for free.
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I agree. As George wrote in one of his attached threads, the system gives continuity *and* misfire indications (if one presses the ignition button on the wireless transmitter and the rocket *doesn't* lift off, but the audio buzzer keeps sounding, the igniter didn't fire--or it did but failed to break [it can happen, rarely, with "hot-wire" nichrome igniters], while if the buzzer stops the igniter burned through without igniting the motor). |