At UTC/CSD we put 9% AP in HTPB to increase regression rate in our solid
fuel ramjets.
At 9% it's UPS shippable as a combustible solid, no hazmat, just smolders
at STP.
K
On Tue, Aug 4, 2020 at 4:51 PM William Claybaugh <wclaybaugh2@xxxxxxxxx>
wrote:
Henry V:
I purchased a hundred pounds of PSAN about 30 years ago and tested it at
plus or minus 20% loading to see the effect on regression rate in a Lox
hybrid.
It helped, of course, but it became clear that getting to a simple
cylindrical core fuel grain was going to require 40% plus loading, at which
loading the burn would be self-sustaining and thus capable of throttling
down to a inefficient minimum but not capable of shutting down.
I later learned that ATK had subsequently done a fairly comprehensive
study of AP as a regression rate additive for Lox hybrids and similarly
concluded that the loading required to reach a simple core burning grain
was self-sustaining.
Bill
On Tue, Aug 4, 2020 at 5:22 PM Henry Vanderbilt <
hvanderbilt@xxxxxxxxxxxxxx> wrote:
Bill:
In the current context, I'd define "practical" as meaning that somewhat
less performance than AP based formulations would probably be acceptable,
but that short filled-motor storage life would present a significant
logistical difficulty for the hypothetical intended use. Not an
insuperable one, mind, but it'd add a major operational constraint and
limit the overall usefulness.
Henry
On 8/4/2020 4:10 PM, William Claybaugh wrote:
Henry V:
Define practical: there are lots of AN based propellant formulations;
few offer the performance available from AP.
Bill
On Tue, Aug 4, 2020 at 5:03 PM Henry Vanderbilt <
hvanderbilt@xxxxxxxxxxxxxx> wrote:
Ignorant question for the list: Is there a practical solid-rocket
propellant based on ammonium nitrate?
Henry
On 8/4/2020 2:46 PM, Ben Brockert wrote:
Now said to be AN, which is more in line with previous explosions.
"Lebanese president blames 2,750 tonnes of ammonium nitrate"
Death toll currently at
73.https://www.bbc.com/news/live/world-middle-east-53656328
On Tue, Aug 4, 2020 at 10:19 PM Nate Downes <downix2k@xxxxxxxxx>
<downix2k@xxxxxxxxx> wrote:
It's not known as "Chile Saltpeter" for nothing. It is listed on safety
sheets as explosive under the right conditions.
On Tue, Aug 4, 2020, 2:13 PM BrianK ABQ <cielobenazul@xxxxxxxxx>
<cielobenazul@xxxxxxxxx> wrote:
Is there any history of Sodium Nitrate doing something like this?
