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Unread 24-08-2011, 15:57
Travis Covington's Avatar Unsung FIRST Hero
Travis Covington Travis Covington is offline
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Re: Shockwave

Quote:
Originally Posted by usmanali View Post
Does anyone have blueprints for the shockwave t-shirt cannon from the team 254? If not we need to know how they got the tubes to seal after each fire. Any help would be apprecieated! we only have two weeks to get this done

Did Kevin ever get back to you? If not, sorry about that.

The barrels/revolver mechanism doesn't actually seal against the valve body block. The gap is minimal, and we simply let the valve open and deal with the air losses through the small gap. We still manage to get a good launch, and estimate we are only losing 20% of the velocity/distance of each shot.

Also, 2 weeks doesn't sound like enough time to make a similar mechanism work safely and effectively. We spent over 2 weeks simply testing and debugging the completed cannon. Designing it, procuring parts and building/assembling it took more than 8 weeks.
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2008-2017 - Engineering Mentor of Team 254
2001-2008 - Engineering Mentor of Team 968
1998-2001 - Mechanical Director/Driver/Member of Team 115

Last edited by Travis Covington : 24-08-2011 at 16:00.
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