“Shit just got real!”

With the critical design review just ahead of us (it will be held next Tuesday at the DLR facilities in Oberpfaffenhofen, Germany), the design phase is coming to and end soon. But nonetheless we have already ordered some components, and just this week the pillars, which are one of the main structural elements of the TxSU have arrived. It’s becoming real!

Just to remind you how the TxSU looks, here’s a picture of the CAD model:

Image of the TxSU assembly

The design of the TxSU. The pillars that are around the circumference (there’s 18 of them) have just been delivered this week.

If you’d like to know how this design evolved I recommend this old post: The Flying Christmas Tree

So the pillars have arrived, and just for fun (and to show you how it looks), I tried to arrange them roughly how it will look, together with a battery, an IR source and a small PCB with two LEDs. Of course a lot of stuff is missing, but together with the CAD image from above you can get an idea of how it will look in the end.

Components of the TxSU

Some components of the TxSU, loosely arranged to give an idea of how the assembly will look.

The pillars themselves are quite small, the outer dimensions are 31x14x8.3 mm, and their mass is less than 5 g. And in that small volume are as many as 7 screwholes, 3 to attach the pillars to the rest of the structure, and 4 to attach the LED boards to the pillars. I can tell you, it was some headache to make that fit. But now it feels really good to have the part, that for months just existed on the computer screen, and to be able to look at its shiny aluminium surface.

The pillars

The pillars – aren’t they shiny?

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Going ahead

June, is a beautiful period in Stockholm.  Many students have left their schools for travel or and fun, or for intership and work. However, our Isaac team, are still continuing to work on this project. The Critical Design Review (CDR) is coming up, we have a lot of work to do. Although we have submitted the SED v2.0, we still need to do some modification and iteration  on the mechanical and electrical design. We need to prepare the powerpoints for the CDR presentation. CDR requires most of key design, which covers a lot of technical knowledge and problems. So we have to prepare for the questions and comments from experts on these techniques. OK, let’s go on.