Thread: Cannon to fire a projectile into space
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Old 15-01-2010, 12:55 PM
TrevorW
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TrevorW is offline 		 
Join Date: Aug 2006
Location: Western Australia
Posts: 8,284
Has been done 100kgs projectile to 180klm

refer HARP see this article

http://lifeboat.com/em/chapter.1.pdf
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