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Old 12-10-2011 | 10:21 PM
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Water tight cockpit; after the fact? Capsules, Pods, Canopies, and/or parachutes...
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Old 12-10-2011 | 11:16 PM
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Originally Posted by Lighthouse
Water tight cockpit; after the fact? Capsules, Pods, Canopies, and/or parachutes...


After what fact ???????????? If the thing is rated and pressure tested, it is a sealed unit ! NOT a Goldfish bowl , Hell Maybe one day I will learn enough to design and build a race boat to put it in.
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Old 12-11-2011 | 09:32 AM
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Facts are synonymous w/the model and simulation (see post 247). Taking all degrees and angles into account, isn't a goldfish bowl stronger than an egg? Having a very high pressure area between an outer and inner "shell" could produce a "reactive" effect as well as define a buffer zone between rigid and deforming materials.
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Old 12-11-2011 | 10:11 AM
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Originally Posted by Lighthouse
Facts are synonymous w/the model and simulation (see post 247). Taking all degrees and angles into account, isn't a goldfish bowl stronger than an egg? Having a very high pressure area between an outer and inner "shell" could produce a "reactive" effect as well as define a buffer zone between rigid and deforming materials.

Dude put the pipe down, go play with your parachute, training wheels and feed your fish.
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Old 12-13-2011 | 08:16 PM
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I just saw this on YT
http://www.youtube.com/watch?v=j9Dw_...eature=related
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Old 12-14-2011 | 10:06 PM
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Yes; this thread morphed into a building competition for an M1A2 turret. Moreover; I am sure the intent of all is similar. Happy holidays and a safe 2012!

"...Fully developed by either the teams or the International Boat racing association this safety tool can really contribute in saving lives and money.... Additional safety measures in a already very risky sport are always welcomed......"

Last edited by Lighthouse; 12-14-2011 at 10:09 PM.
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Old 12-14-2011 | 11:38 PM
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Originally Posted by Lighthouse
Yes; this thread morphed into a building competition for an M1A2 turret. Moreover; I am sure the intent of all is similar. Happy holidays and a safe 2012!

"...Fully developed by either the teams or the International Boat racing association this safety tool can really contribute in saving lives and money.... Additional safety measures in a already very risky sport are always welcomed......"
M1A2 ??? Show us a Boat you have designed and built.
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Old 12-15-2011 | 09:39 AM
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I'm not sure I understand how a check valve (non return valve) would work to help bringing air in to the cockpit but keeping water out?

Other solutions could be a roll over valve similar to the ones that are in car fuel tanks. Or just a "J" shaped ventilation tube going from the roof of the cockpit to the floor.

Lighthouse have a valid point. The natural solution is to build a thick shell that can handle the forces. But why not investigate other solutions also?
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Old 09-14-2012 | 11:41 AM
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Originally Posted by tstanley
I would sure like to see the results of Gripenland's LS-DYNA project. That software is out of my price range. It would sure be an advancement in our knowledge.
Tom Stanley
Here are some simulations of a flat window with frame. The pressure applied is equivalent to the dynamic pressure at 80 mph. The window flange is 2" and so is the strip of adhesive.

The window is close to 3/8" (9 mm) polycarbonate.

[youtube]qUzwWvU-gRY[/youtube]

This is how the adhesive deteriorates.

[youtube]6g9s2nNKHis[/youtube]

This is 100 mph

[youtube]rubmbgGH3MA[/youtube]

Last edited by Gripenland; 09-14-2012 at 11:49 AM. Reason: Unit change
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Old 11-07-2012 | 10:18 PM
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Anyone catch the Sea Dart,,,cool work.
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