[PSUBS-MAILIST] Non developable surfaces

[Marc de Piolenc]

It can't be too difficult. Compound-curved Plexiglas (British: Perspex) 
cockpit canopies have been made for decades, and the full-surround 
"bubble" cockpit of the Bell 47 helicopter dates to the late 1940s. The 
problems we run into with acrylic pressure hulls are caused by thickness 
and the consequent need to use casting technique instead of blowing, but 
that's not going to be a problem for you in making a transparent ballast 
tank shell.

Do you want me to dig into the aeronautical literature?

Marc de Piolenc
Aero-geek

On 2/16/2014 8:18 AM, Joe Perkel wrote:
>
> 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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