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starship-design: cancelling the vibrations...



The easiest way is not with two engines, but with 6.

Arranged in a hexgonal pattern and viewed from the engine looking 
toward the nose.
    
    1
2 _(_)_ 6
 (_) (_)
 (_)_(_)
3  (_)  5
    4

Engines 1,3,5 fire alternately with 2,4,6 with each explositon, the
center of gravity remains within the hexagon, and therefore stable.
the two sets of explosions might tend to cancel each other.  An even
beter scenario would be to fire them in pairs, and have a three phased
cycle.  1&4, 2&5, 3&6 would work.  The vibrations would overlap more,
and average out.

-- 
Kevin Houston http://www.lpmn.org/candidates/
Libertarian candidate for Congress - District 5