I think the 25 micron AP is a bit of a sticking point, both literally and
figuratively. I've never worked with asphalt composite motors before, but
from my research experience, 200/25 is excellent modality, but 25 micron AP
is incredibly hard and expensive to find. I suspect that overall properties
would be considerably less ideal (possibly unable to be poured and a slower
burn rate) if you tried to sub it for 90 micron instead. Trying to use a
400/90 blend may work, but I'd expect that without the ability to
effectively use Tepanol, the 400 would shear and thus the exponent would be
brutal. That said, thank you for sharing and it is very interesting indeed.
-Tyler
On Wed, Jul 8, 2020 at 7:20 PM ken mason <laserpro1234@xxxxxxxxx> wrote:
I got my log book from work at Edwards AFB Rocket Lab circa 1987-89 and
the basic formula is as follows:
15% - Binder of which 70% is AC-3150 asphalt,15% Kraton D1107 15%
Rohm/Haas B-72 Acryloid
18% - 6 micron Al powder (MDX-65)
45% - 200 Micron AP
22% - 25 Micron AP
100% - Total
Pot Temp 255-260F
Dec. 11th 1987
Ken
On Wed, Jul 8, 2020 at 5:22 PM 1bcjolly <1bcjolly@xxxxxxxxxxxxx> wrote:
Ken Mason posted an article that was in 2 parts. Here is the article
in one attachment. Hope this is helpful.
Barry
Sent from my Sprint Tablet.
-------- Original message --------
From: 1bcjolly <1bcjolly@xxxxxxxxxxxxx>
Date: 7/8/20 20:17 (GMT-05:00)
To: 1bcjolly@xxxxxxxxxxxxx
Subject: 2.6004.pdf
Sent from my Sprint Tablet.