Thx.
John
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Peter Fairbrother
Sent: zondag 14 juli 2019 15:48
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Electroforming Experiment
On 14/07/2019 03:57, johndom@xxxxxxxxx wrote:
I looked at the URL clip. Complicated stuff.
It does not mention how thick a copper layer can be deposited using such
electrodeless procedure.
combustion chamber?
John
------ Origineel bericht------
*Van: *Norman Yarvin
*Datum: *za, 13 jul. 2019 21:21
*Naar: *arocket@xxxxxxxxxxxxx <mailto:arocket@f reelists.org>;
*CC: *
*Onderwerp:*[AR] Re: Electroforming Experiment
On Sat, Jul 13, 2019 at 06:50:19AM -0700, Ed LeBouthillier wrote:>The largest
benefit of this approach is the elimination of the minimum>gauge issue. As
shown, making a 0.0025" thick shell is trivial. So, for>example, a low
pressure propellant tank which needs to be 0.005" thick>(say in nickel
instead of copper) is quite feasible.Minimum gauge issues don't end with
fabrication, though; 0.005" ispretty flimsy and floppy, the latter perhaps
being moreimportant.Ma <http://important.Ma>ny an engineering design has
looked good when analyzed at zerofrequency but failed due tooscillations.Be
<http://oscillations.Be>sides electroplated copper, by the way, the
re's also electrolesscopper, which is better at plating the inside of
cavities (which inelectroplating are farther away from the anode and thus
plate moreslowly). There's a DIY recipe
at:https://www.youtube.com/watch?v=Z228xymQYho