By valy - 4/4/2012 10:26:18 PM
Well, my problem is that I would like to build a lightweight structure for a telescope. One possible structure is truss serrurier structure, like this http://www.planewave.com/index.php?page=1&id0=0&id=4 . Another ideea is something even lighter, like this one http://www.alpineastro.com/LAZZAROTTI/Lazzarotti_Home.htm
I don't have any experience with different materials like Al, or carbon fiber, but I've startet to study this problem. The first ideea is to make a truss serrurier structure:
- three rings cutted from carbon fiber plates: one full disk (plate) at the end to hold the main mirror and two rings in the middle and at the top of the structure
- truss tubes in between
Tubes will be something like this ones https://www.easycomposites.co.uk/8mm-woven-finish-carbon-fibre-tube , pulllwinded or rolled.
The main problem is the ring elements and the back plate: must be light and strong. And I've concluded that single carbon fiber plate is not good. It must be a sandwich plate. I found this https://www.easycomposites.co.uk/foam-cored-carbon-fibre-panel but I don't understand: is fiber carbon on both sides?
The tube must hold a 11" (270mm) mirror at the back (~4kg) plus the focuser (~500g) and a small mirror at the top (~400g), Truss must be ~1m long and 350mm wide.
I plan to glue the tubes on the rings/plates in order to avoid drilling holes and weakening the structure or cracking the tubes.
I'll appreciate any help.
Thanks.
|
By steveastroUK - 5/7/2012 11:35:18 AM
Yeah, more soup bowl than mirror ;-)
|
|