What are you crosslinking the polyNIMMO with? Unless you have an energetic
crosslinker, I am not impressed ;-)
On 5 August 2015 at 12:23, Anthony Cesaroni <acesaroni@xxxxxxxxxxx> wrote:
HNF, HMX, polyNMMO plasticized with TMETN. What would be your guess?
Anthony
Sent from my iPhone
On Aug 5, 2015, at 3:25 AM, George Herbert <george.herbert@xxxxxxxxx>
wrote:
Is the HNF propellant 1.1 or just the bulk HNF chemical?
Thanks...
George William Herbert
Sent from my iPhone
On Aug 4, 2015, at 3:12 PM, "Anthony Cesaroni" <acesaroni@xxxxxxxxxxx>
wrote:
Yup. HNF propellant below. 270 seconds, sea level delivered. No metal,
smoke or flame. Minor problem, $14K/lb. among other things. Add metal and
it really screams.
<image002.jpg>
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx
<arocket-bounce@xxxxxxxxxxxxx>] On Behalf Of Monroe L. King Jr.
Sent: Tuesday, August 04, 2015 6:04 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Peltier specifications
Anthony have you done any work with HNF? Being it's so hard to get right?
If you are I want a job at CTI. lol
-------- Original Message --------
Subject: [AR] Re: Peltier specifications
From: "Anthony Cesaroni" <acesaroni@xxxxxxxxxxx>
Date: Tue, August 04, 2015 2:54 pm
To: <arocket@xxxxxxxxxxxxx>
The Russians have (had) at least one notable ram rocket engine that
used the approach. It helps overcome some aluminum combustion issues
but doesn t completely solve them like HNF does. Clever those
Russians are. :-)
Best.
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx<arocket-bounce@xxxxxxxxxxxxx>] On Behalf Of Monroe L. King Jr.
Sent: Tuesday, August 04, 2015 5:38 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Peltier specifications
Hummm now that is interesting Anthony. Hummmmmm and thanks!
-------- Original Message --------
Subject: [AR] Re: Peltier specifications
From: "Anthony Cesaroni" <acesaroni@xxxxxxxxxxx>
Date: Tue, August 04, 2015 2:31 pm
To: <arocket@xxxxxxxxxxxxx>
grandmother's cedar chest and sublimates causing other issues as well.Been there done that. It makes your rocket smell like your
Having said that, if you press it with low micron or nano aluminum, it
makes for an interesting fuel grain with interesting ballistic
characteristics.
.
Particularly in an ?all solid? hybrid.
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
-----Original Message-----
mailto:arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx>] OnFrom: arocket-bounce@xxxxxxxxxxxxx [
Behalf Of Monroe L. King Jr.
Sent: Tuesday, August 04, 2015 5:18 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Peltier specifications
propellant? It's a white powder (used mostly in mothballs) it sublimatesI wonder if Naphthalene would make a good additive to HTPB hybrid
quite easily. It's a hydrocarbon, perhaps it would help stabilize hybrid
combustion?
I know adding AP to the HTPB helps combustion say 5%.
-------- Original Message --------
Subject: [AR] Re: Peltier specifications
<wclaybaugh2@xxxxxxxxxx>>From: Bill Claybaugh < <mailto:wclaybaugh2@xxxxxxxxxx
wclaybaugh2@xxxxxxxxxx>
Date: Tue, August 04, 2015 2:04 pm
arocket@xxxxxxxxxxxxx" <To: " <mailto:arocket@xxxxxxxxxxxxx <arocket@xxxxxxxxxxxxx>>
arocket@xxxxxxxxxxxxx><mailto:arocket@xxxxxxxxxxxxx <arocket@xxxxxxxxxxxxx>>
system was needed for ignition, increasing the size of that tank was allNot really a preburner and not really adding any complexity; the TEA
that was required to eliminate most combustion instability.
not require all that much heat to vaporize a Lox fog.I can't speak to other technical solutions; but note that it does
Bill
Sent from my Commodore 64
mailto:hvanderbilt@xxxxxxxxxxxxxx <hvanderbilt@xxxxxxxxxxxxxx>>On Aug 4, 2015, at 3:54 PM, Henry Vanderbilt < <
hvanderbilt@xxxxxxxxxxxxxx> wrote:
talking about something like an oxygen-rich preburner to make sure theInteresting. So if I'm understanding this correctly, you're
oxidizer is thoroughly vaporized as being useful for large hybrids.
I'd been wondering about that.Makes sense of what VG might be having methane onboard SS2 for.
already committing to large hybrids, then hitting the (apparently fairlyIt sounds like the sort of thing one would come up with after
typical) uneven combustion, to make them actually work. If you assume from
the start you'll need some sort of preburner with a separate fuel system,
I'd think large hybrids would lose their lower-parts-count edge over
biprops in the tradeoffs.
On 8/4/2015 11:37 AM, Bill Claybaugh wrote:
Mark:
temperature goals. But why not go to a dry ice cooler and maximum density:It seems like an AN & ice water mix could be tailored to your
a single pass on a couple of coils should get you what you are seeking. LN2
is also obviously an answer; both can be had in Mojave.
end to assure the N2O fog is vaporized, otherwise combustion will be roughAs Anthony has hinted, you will need a heat source at the head
and unstable. At Amroc we injected TEA throughout the burn to vaporize the
Lox; I gather VG is using Methane in the SS2 nylon motor.
Bill
Sent from my Commodore 64
mailto:mark.spiegl@xxxxxxxxx <mark.spiegl@xxxxxxxxx>>On Aug 3, 2015, at 9:33 PM, Mark C Spiegl < <
mark.spiegl@xxxxxxxxx> wrote:
Wow... Im out of the office for a day and my inbox is full!
:-)
fan of high density Nitrous. Im looking to cool 20-50 lbs of Nitrous toAnyway.. Anyone who has followed my hybrid projects knows Im a
25-ish degF.
Goals:
motor burning 10-20 lbs of Nitrous. Much above 20lbs (esp in the desert),(1) Flashing liquid to vapor to chill Nitrous is fine in a
flashing liquid to gas becomes impractical. I would like to start a little
closer to my target temperature of 22 degF. The Peltier, Stirling Cooler,
or whatever would chill the supply tank, not the rocket tank.
something a little more elegant and deterministic. Bags of ice aren't aI know ice is a quick-and-dirty answer, but I would like
great answer at FAR or Blackrock.
weather. Cold weather is no problem. I cannot prove what is happening, but(2) I have had trouble igniting high density Nitrous in warm
I suspect temperature gradients in the long thin Nitrous tank are causing
the problem. If the Nitrous is 22 degF at the top of the tank, it may be
much much colder at the injector. Supplying Nitrous close to the final
temperature should help mitigate this problem, if Im correct.
between the top and bottom of the rocket's oxidizer tank???A related question: Any simple ways to equalize temperature
--MCS
(Im an EE kind of person so my solutions tend to feel like
electronics... ie Peltiers)