[AR] Re: Project update - propellant tank hydro tests
- From: Ben Brockert <wikkit@xxxxxxxxx>
- To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
- Date: Mon, 18 Nov 2013 12:45:30 -0700
Ha, Rocket 1. I was giving the Copenhagen guys a hard time last week
about un-creatively calling their huge new building "HAB 2".
That's an impressive set of parts. Did you do anything special in
analyzing the design of the shaft seal? I usually avoid that style of
seal design because the operating pressure is trying to unseal it, but
I haven't done the calc to see how the pressure compares to the
preload.
Ben
On Sun, Nov 17, 2013 at 9:15 PM, Robert Watzlavick
<rocket@xxxxxxxxxxxxxx> wrote:
> I completed hydro-testing today on a prototype tank based on the design I
> mentioned a few weeks ago.
>
> In summary, no leakage or damage was observed after 2 cycles to 750 psi.
> There looks to be a small amount of permanent deformation in the center of
> the bulkheads (~0.005 inches) but nothing to worry about. While assembling
> the parts, as the o-ring slid past the tank wall holes, it shredded some
> small pieces off. I didn't debur the inside hole edge as well as I could
> have so I'll clean them up a bit and see if it helps.
>
> Discussion is at:
> http://www.watzlavick.com/robert/rocket/
>
> photos are at:
> http://www.watzlavick.com/robert/rocket/rocket1/photos/index.html
>
>
> -Bob
>
>
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