K
killium
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When the shuttle is on the launch pad, a couple of second before the ignition we can see a lot of big sparks beeing thrown under the motors. I've been told that those are there to ensure a correct ignition. I have three question about that:<br /><br />Is the proper ignition the right answer to this ?<br /><br />If yes, how does the ignition still reliable once in space (no external sparks over there) ?<br /><br />Isn't there a system (electrodes or ?) that is entirely reliable for ignition inside each motor<br /><br />If no then, how does the ignition works ?<br /><br />thanks in advance <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> </div>