Thanks Robert!
Does the cat pack become part of the chamber length? Whats the quick
and dirty for chamber length?
Let's hit the iron while the metal is hot!
What are the half angles of the nozzle? (at sea level)
You guy's guide me I'll work the metal.
We can all meet at FAR and try this out together?
I'm pretty sure now we can do show and tell at Space Access this year
and then go try it out!
-------- Original Message --------
Subject: [AR] Re: Peroxide/Gasoline Engine
From: Robert Steinke <robert.steinke@xxxxxxxxx>
Date: Tue, December 15, 2015 7:17 pm
To: arocket@xxxxxxxxxxxxx
Here's the quick and dirty calculation I would do.
I'd expect half of the pressure to be lost to pressure drops in the system
so plan for a chamber pressure of 470 psi.
At that pressure a peroxide monoprop system might get 100-110 seconds Isp
depending on concentration of peroxide. I used RPA and took 20% off of
theoretical to leave a nice big margin.
At 100 seconds Isp 6.23 lbm/s would generate 623 lbf of thrust.
To calcualte the throat area use this formula:
Thrust = chamber pressure * throat area * thrust coefficient
Thrust coefficient is an empirical fudge factor. 1.2 usually works well,
so:
623 lbf = 470 psi * area * 12
area = 1.1 square inches
throat diameter = 1.18 inches
Make the chamber diameter three times the throat diameter.
If you feel optimistic redo the calculation with an Isp of 110.
On Tue, Dec 15, 2015 at 6:00 PM, Monroe L. King Jr. <
monroe@xxxxxxxxxxxxxxxxxx> wrote:
I'll take that advice!
Here are the pump specs:
Mass Flow = 6.23 lb/s
DP = 940 psi
N = 50 kRPM
There are no pressure drops taken into account of course at the
pressure.
Can you give me a quick and dirty chamber size and throat diameter?
-------- Original Message --------them
Subject: [AR] Re: Peroxide/Gasoline Engine
From: Paul Breed <paul@xxxxxxxxxx>
Date: Tue, December 15, 2015 5:33 pm
To: arocket@xxxxxxxxxxxxx
Simple advice....
Get a turbopump -> monoprop peroxide running...
Monoprop can be simple turned stainless chamber , or even welded up from
various 316 stainless parts from mcmaster...
Count on CAT pack being 1.25 to 1.5 in thick
Use silver plated nickel or solid silver cat screens...
The Andrews link posted earlier has conservative cat pack design info...
After that all works make a regen chamber add fuel and double the ISP...
On Tue, Dec 15, 2015 at 4:23 PM, Monroe L. King Jr. <
monroe@xxxxxxxxxxxxxxxxxx> wrote:
Let me make it more clear then! I'm looking for work I can COPY or some
Free engineering from people on the list that have gone before me with
some pretty specific numbers.
Because I don't have time right now to reinvent the wheel.
Today I have some backing and I'm trying to make the most of it for
arocket-bounce@xxxxxxxxxxxxx]and NOT for myself alone.
I will check the archives as well thank you.
-------- Original Message --------
Subject: [AR] Re: Peroxide/Gasoline Engine
From: "John Dom" <johndom@xxxxxxxxx>
Date: Tue, December 15, 2015 4:29 pm
To: <arocket@xxxxxxxxxxxxx>
Whatever Troy, this broken record surfacing once more hit me.
jd
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:
arocket-bounce@xxxxxxxxxxxxx]On Behalf Of Troy Prideaux
Sent: dinsdag 15 december 2015 23:32
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Peroxide/Gasoline Engine
Got out of the wrong side of the kennel this morning?
Troy
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:
NotOn Behalf Of John Dom
Sent: Wednesday, 16 December 2015 9:22 AM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Peroxide/Gasoline Engine
Odd to keep adhering to such idea, like a fanatic, again and again!
claimthe ancient Clark book nonsense line Spencer clang to I hope? To only
arocket-bounce@xxxxxxxxxxxxx]they have flown is misleading this list. They most certainly have NEVER
flown, anywhere on this planet. Static tests, yes, several options, but
that is beside the point.
jd
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:
wantOn Behalf Of Ben Brockert
Sent: dinsdag 15 december 2015 23:03
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Peroxide/Gasoline Engine
But I thought this topic "has been discussed AD NAUSEAM"?
Non-catalyzed peroxide hydrocarbon engines have flown, but I don't
withto be the one to beat a dead horse.
On Tue, Dec 15, 2015 at 4:59 PM, John Dom <johndom@xxxxxxxxx> wrote:
No, a catalyst is not required.Oh, is that so, Ben? Your references of anything which ever flew
H2O2, without a catalyst? VEEERY interesting.
jd