[PSUBS-MAILIST] Non developable surfaces

[Joe Perkel]

Hi Alan,

I figured you to be distracted by Polynesian dancers by now! :)

Small window ala Nekton, but located in a spot where the shape curves in two directions. A flat slab like the Nektons would detract from the lines unless made too small to be practical.

The whole thought process here, is to expound on James Frankland's forward MBT by fully enclosing for the purpose of reducing tow drag.

Joe



On Feb 15, 2014, at 10:39 PM, Alan <alanlindsayjames at yahoo.com> wrote:

> Hi Joe,
> I'm not quite following you, but here are some suggestions.
> you can cut out an oval section from a sheet of ply wood or similar & use it as 
> the template to blow the acrylic. Or blow it in to a female form. However
> contouring it to the sub shape & having it bubble out from there seems difficult.
>   The only way I could imagine you doing it would be to tip your sub on it's side,
> heat the acrylic sheet & drape it over the sub. Then trim it to shape & weld brackets 
> to the sub to clamp it & a female mold on. Then heat the acrylic & quickly bolt it & 
> the mold to the submarine. You could blow compressed air in to it through a through hull.
> Experimenting with a scale model would help.
> Hope that makes sense. Of course Greg is our resident expert.
> Alan
> Sent from my iPad
> 
>> On 15/02/2014, at 6:18 pm, Joe Perkel <josephperkel at yahoo.com> wrote:ex
>> 
>> 
>> How much trouble is it to form acrylic in two directions? As in following a complex hull form to make an integral window.
>> 
>> In other words a transparent section of MBT with a bidirectional curve.
>> 
>> Joe
>> 
>> 
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