Trick question. What the Brits reach temperature wise with H2O2 in their
regenerative cooled designs?
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 <arocket-bounce@xxxxxxxxxxxxx> On Behalf Of
roxanna Mason
Sent: Wednesday, October 14, 2020 8:43 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: RP-1 versus ethanol for a student rocket?
The key is temperature, I don't think the LR-101 fuel temp running off ratio,
1.8 , gets much above 250F but a high performance engine running near stoic
will run hot enough to break down hydrocarbon chains plus as you mentioned,
time also factors in. BTW, RP-1 and RP-2 meet the same Mil Spec DTL-25576. Red
as ATF.
K
On Wed, Oct 14, 2020 at 4:54 PM Carl Tedesco <ctedesco@xxxxxxxxxxxxxx
<mailto:ctedesco@xxxxxxxxxxxxxx> > wrote:
A RP-1,2 alternative…
We static tested and flew an LR101
<https://www.youtube.com/watch?v=s4zow8f4ePg> with JP-8 biodiesel that we got
from Energy & Environmental Research Center (EERC). It worked great.
I’ve always thought about testing peanut oil.
I have burned Jet-A (obtained from the Mojave Airport) in several LR-101 burns.
No duration was longer than 20seconds. There was no noticeable coking in the
cooling passages. For burns of 30-75 seconds I always used RP-2, not because I
was worried about coking, but because they were commercial tests where we could
afford the RP-2.
Where will you test & fly? If you’re near FAR, you might contact them, because
they use to have a few barrels of RP-1.
--- Carl
From: arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx>
<arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx> > On Behalf
Of Yucca Works
Sent: Tuesday, October 13, 2020 9:42 PM
To: arocket@xxxxxxxxxxxxx <mailto:arocket@xxxxxxxxxxxxx>
Subject: [AR] RP-1 versus ethanol for a student rocket?
Hello all, my team is considering RP-1 and ethanol right now (to be paired with
LOX) for our main propellant and I was wondering if anyone has any input on
which fuel to use given some constraints and thoughts to follow. For one, we
don't have an infinite budget at our disposal so Ethanol becomes immediately
appealing because it is easy to source, this is on top of the fact that Ethanol
is not ITAR protected and can be mixed with water for "inherent" cooling. What
made RP-1 appealing was the fact that it is used in the industry so gaining
experience with it seems extremely appealing and, I think, would make our work
more "useful/notable" but sourcing RP-1 is difficult and it is expensive. A
slightly tangential consideration is using lower grade kerosene which I have
seen other college students do but I am concerned with using low-grade kerosene
in regen cooling channels and it obviously has poor performance.