James:
You want solid propellant service life data? I might be able to help:
See if you get your hands on a copy of text book: Volume 170 of Progress in
Astronautics and Aeronautics, title Tactical Missile Propulsion. Chapter 5 has
treatise on service life predictions .vs actual.
Can also find articles in old AIAA/JANNAF journals from many rocket/missile
programs service life studies. Most of these antique publications are not
online, even if you are member of organization; so might need to visit a decent
science tech college library to find them. Look for dedicated studies on
Polaris, Minuteman, Titan, and Shuttle SRB solid booster motors. These studies
usually detail the polymer blend, oxidizers, and additives.
The amateur community focus is on "safer" HTPB polymer system, and leave the
DOT 1.1 materials to experts. Regardless, Tactical missiles often use HMX/RDX
modifiers that might be more interesting to you? Couple current missile
programs like Aim-9 Sidewinder and AIM-120 AMRAAM; have published service life
studies. Couple of vehicles in the Nike missile project
https://en.wikipedia.org/wiki/Project_Nike had several service life studies ;
published. There are also some NATO member and other international service
life reports on non-US missile systems. These are all hiding in same old
AIAA/JANNAF periodicals. Some of newer declassified articles published since
2000 can be found online.
Another source of solid propellant service life data is gas generators used in
automotive airbags, and aircraft exit slide inflation. They used different
oxidizers to lower flame temperatures, but they use polymer binders that can be
useful comparison. Have to hunt around the automotive/aircraft tech journals
for the papers, but they have published extensive measured .vs. predicted
service life studies at command of US federal gubermint and NHTSA/FMVSS
regulations.
Cheers!
Jim
On November 29, 2021 at 8:34 AM J P <james.padfield@xxxxxxxxx> wrote:
Hi Anthony,
This was a composite HTPB/AP propellant? Can you tell me any details
(however vague) on the formulation? I ask because I work with cast-cure PBX
explosives, which of course generally have very similar compositions to cast
composite rocket propellants, and I am forever being asked ( by customers, by
our salesmen and programme managers) about upper and lower storage temps,
storage lives, etc. etc.! And any evidence, even anecdotal, is always
interesting (to me at least!).
Thanks,
James
On Sun, 28 Nov 2021 at 01:06, Anthony Cesaroni <anthony@xxxxxxxxxxx
mailto:anthony@xxxxxxxxxxx ;> wrote:
> >
Hi Bill
They conducted their 10th anniversary flight with a surplus 100K
Lb./sec. booster we had built. I was not involved with the launch. The
motor had been in non-climate controlled storage in NM for 8 years so it
had be cycled from below freezing to over 100 F all that time. It was a
good way to confirm the published storage and age limits of the system. The
booster was paid for anyway and had all the required approvals but most
importantly, the crew were well qualified on the system and operations. It
went to space without a glitch.
Best.
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
http://www.cesaronitech.com/ http://www.cesaronitech.com/
(941) 360-3100 x1004 Sarasota
(905) 887-2370 x222 Toronto
From: arocket-bounce@xxxxxxxxxxxxx
mailto:arocket-bounce@xxxxxxxxxxxxx ;<arocket-bounce@xxxxxxxxxxxxx
mailto:arocket-bounce@xxxxxxxxxxxxx ;> On Behalf Of William Claybaugh
Sent: Saturday, November 27, 2021 6:48 PM
To: arocket@xxxxxxxxxxxxx mailto:arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Homemade Astronauts on Tv
Anthony:
Only morally, spiritually, and emotionally.
When Jim has that beer w/ Ken, we should buy.
Bill
On Sat, Nov 27, 2021 at 4:44 PM Anthony Cesaroni
<anthony@xxxxxxxxxxx mailto:anthony@xxxxxxxxxxx ;> wrote:
> > >
Hi Jim,>
Was someone injured participating in CSXT?
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
http://www.cesaronitech.com/ http://www.cesaronitech.com/
(941) 360-3100 x1004 Sarasota
(905) 887-2370 x222 Toronto
From: arocket-bounce@xxxxxxxxxxxxx
mailto:arocket-bounce@xxxxxxxxxxxxx ;<arocket-bounce@xxxxxxxxxxxxx
mailto:arocket-bounce@xxxxxxxxxxxxx ;> On Behalf Of JAMES ROSSON
Sent: Saturday, November 27, 2021 5:36 PM
To: arocket@xxxxxxxxxxxxx mailto:arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Homemade Astronauts on Tv
> > > >
On November 26, 2021 at 8:51 PM Anthony CesaroniLOL Anyone who makes commercial motor gets asked to donate
<anthony@xxxxxxxxxxx mailto:anthony@xxxxxxxxxxx ;> wrote: We get
contacted by some of these production companies asking to us donate or
sell them rocket motors and as a general rule, we respectfully decline.
Anthony J. Cesaroni
> > >
(and refuses the 2nd time).
Ever notice how you don't see the same folks launching
rockets in more than one show? The production companies making rocket
shows only survive because folks are willing to pay their own way to be a
TV star.
IMHO - Being involved in a rocket TV show is like biting into
a bad apple and being forced to finish it.
If your smart, will NEVER do that again.
> > > >
On November 26, 2021 at 8:28 PM roxanna MasonMy condolences on your experience Ken. If it is any
<rocketmaster.ken@xxxxxxxxx mailto:rocketmaster.ken@xxxxxxxxx ;> wrote:
I wouldn't waste my time watching that show, it gives
amateurs an undeserved bad reputation.
Ken
> > >
consolation, you are not alone?
Behind the scenes history of CSXT activities are so
ludicrous; the trail of injured souls would read like a bad fiction
novel, if anyone dared publish it. In spirit of "If you don't have
anything nice to say, come sit next to me." Let's met at the bar
sometime soon? :-)
+1 Most all TV shows "gives amateurs an undeserved bad
reputation".
Sigh.....
> >