Reply to post: Re: Why...

Virgin 'spaceship' pilot 'unlocked tailbooms' going through sound barrier

sandholme

Re: Why...

Two stage processes are normally used to avoid a single point failure. Arming a control brings you back to a single failure condition (Unless there were still more safety devices.

However you also have to remember that the more interlocks the greater the chance of one of them failing and the resulting complexity actually increasing the risk of failure.

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