JF Mezei wrote:

On 2016-12-14 14:08, Fred J. McCall wrote:

How's that work again? I have a liquid engine that produces some
vibe. I have a solid engine that produces even more vibe. Somehow
the two of them together have less vibe? No, that doesn't make any
sense...


If you manage to get them with the right phase, one engine could act as
noise cancelling headphones and make the rocket totally silent at take
off with no vibrations :-)


Or we could just use unicorns...


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When it counts.