[SS2S-Main] Re: Material for Nozzle fabrication
- From: "" <dmarc-noreply@xxxxxxxxxxxxx> (Redacted sender "monsieurboo@xxxxxxx" for DMARC)
- To: sugarshot@xxxxxxxxxxxxx
- Date: Tue, 6 May 2014 06:59:31 -0400 (EDT)
Strangely enough, the mid-grade (medium-grained) graphite tends to do the job
better than the high-end, fine-grained material. Less erosion, perhaps due to
larger grains interlocking better and being ablated more slowly. And of
course, less expensive.
Graphite's definitely the way to go, but you don't want conductive, fine dust
getting into any electronics (such as a benchtop mini-lathe) so try to capture
the dust at its source.
Cheers,
Mark L.
-----Original Message-----
From: Hayk Azatyan <dmarc-noreply@xxxxxxxxxxxxx>
To: sugarshot <sugarshot@xxxxxxxxxxxxx>
Sent: Tue, May 6, 2014 5:53 am
Subject: [SS2S-Main] Re: Material for Nozzle fabrication
Thanks for your input Jeff. Where do you recommend I buy graphite from?
On Monday, May 5, 2014 4:58 PM, Jeff Moore <tnetcenter@xxxxxxxxx> wrote:
Graphite would probably be the most affordable of materials to use. We had a
machinist in our local group at one point and he made a titanium nozzle as a
proof of concept. That would more than likely be rather pricey for this
project ( his was for a 54mm motor).
Aluminum is a good material to practice on or do mockups with, but I suspect
that it's melting point is way too low to be used as the actual nozzle. It
might work as a carrier for a graphite or ceramic insert though.
Jeff Moore
Bend, Oregon
On Mon, May 5, 2014 at 4:10 PM, Hayk Azatyan <dmarc-noreply@xxxxxxxxxxxxx>
wrote:
Hello all,
Would you all happen to know where I can get my hands on some scrap
circular steel bars for rocket nozzle fabrication?And if you have any
suggestions on the material I should use please let me know. I have already
started using the lathe, and currently I am machining a nozzle out of aluminum.
Although I will not be using this particular nozzle for flight I figured I
should practice making one out of some scrap metal that I found(in this case
aluminium). I know that you guys make some of your nozzles out of graphite, but
for now I am learning to machine metal nozzles just for educational purposes.
Thank you guys!
-Hayk Azatyan
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