[EMAIL PROTECTED] wrote:
> I've picked up three preprints of possible
> interest at this week's AIAA/ASME
> etc Joint Propulsion Conference.
>
> Towards Green Propulsion for Spacecraft
> with ADN-Based Monopropellants
This sounds intriguing... what does "ADN"
stand for?
Do they have somethi
Gentlefolk,
I've picked up three preprints of possible interest at this week's AIAA/ASME
etc Joint Propulsion Conference.
Towards Green Propulsion for Spacecraft with ADN-Based Monopropellants
Anfio, Gronland, and Bergman. Sweedish Space Corp.
An Investigation of a Low-cost HTP/Kerosene
[EMAIL PROTECTED] wrote:
> Looking at the standard Swagelok ball valves, the SS-41 to -44 series,
> they come standard with PTFE/D1710, Grade 1, Class B. Everything
> else in there is 316SS. I don't have a clue what the info after the '/'
> means.
The "D1710 Grade 1 Class B" is an ASTM test spe
I have worked a little with teflon as a machinist. It is hard to hold in a chuck
of course and drills weirder than most plastics. You should try tapping a hole
in it. I wish I had known about these differences then as I would have looked for
differences in their machinability.
Anyway my ques
Looking at the standard Swagelok ball valves, the SS-41 to -44 series,
they come standard with PTFE/D1710, Grade 1, Class B. Everything
else in there is 316SS. I don't have a clue what the info after the '/'
means.
Dan
In a message dated 7/9/02 8:28:40 PM, [EMAIL PROTECTED] writes:
<< My gue
I've also noted that Swagelok ball valves state that the standard
seat material is 'reinforced TFE', with 'virgin TFE' as an optional
material with a lower pressure rating. The questions is: What is that
reinforcing material and it that the problem? The only other options
are UHMW polyethylene
On Tue, 9 Jul 2002, John Carmack wrote:
> ...Mark Henry (ex Beal propulsion engineer) had mentioned to us once
> that not all Teflon is completely peroxide compatible, and this seems to be
> an example of that...
Hmm, yes, definitely noteworthy...
Yes, there are different kinds of Teflon, part
Tonight we built new, high amp switch boxes, installed a stainless line
filter, and flushed out our plumbing. We put a manual ball valve on the
test stand hose, and tanked it up with a couple gallons of water. When you
cracked open the ball valve, water would spray out rapidly, but when fully
ERPSoids
Found this link http://www.cowanalexander.com/Calendar.htm . The
auction in Santa Clara might be of some interest to yous guys.
Armadilians
Same link check out the 20,000 item auction of Ricochet surplus
stuff. First page showed some fancy gizmos which I think were handheld
sp
