On Mon, 29 Sep 2003 22:42:16 +0100, Ian Woollard
<[EMAIL PROTECTED]> wrote:
>Doug Jones wrote:
>
>> The price of LOX kinda drives a stake through the heart of
>> airbreathing concepts...
>
>It's not all about the propellent price anyway, jet engines are
>reasonably cheap and TSTO may well be opt
Doug Jones wrote:
The price of LOX kinda drives a stake through the heart of
airbreathing concepts...
It's not all about the propellent price anyway, jet engines are
reasonably cheap and TSTO may well be optimal with an airbreathing first
stage...
Put it another way- tell that to Rutan.
_
At 06:31 PM 9/26/2003 -0400, Henry Spencer wrote:
You're confusing propaganda with facts. :-) There's no shortage of implicit
claims that using less oxidizer will lower propellant costs too. This does
not stand up to even a moment's inspection, but since when has that ever
stopped people from ma
On Fri, 26 Sep 2003, Pierce Nichols wrote:
> >Actually, needing less oxidizer is frequently cited as a big advantage of
> >air-breathing propulsion, with the implication that it should lower costs.
>
> Yes, but not because you are buying less oxidizer. It's the buying
> less tankage and
At 06:03 PM 9/26/2003 -0400, Henry Spencer wrote:
On Fri, 26 Sep 2003, Pierce Nichols wrote:
> >The price of LOX kinda drives a stake through the heart of airbreathing
> >concepts...
>
> The price of LOX was never a serious driver for looking into air
> breathing propulsion, so I don't rea
On Fri, 26 Sep 2003, Pierce Nichols wrote:
> >The price of LOX kinda drives a stake through the heart of airbreathing
> >concepts...
>
> The price of LOX was never a serious driver for looking into air
> breathing propulsion, so I don't really see how that follows.
Actually, needing le
On Fri, 26 Sep 2003, David Weinshenker wrote:
> > N2O4 18.50(various MON concentrations)
> > RFNA 26.25
> > H2O2 70% 1.05(Higher conc TBD)
> > MMH 61.00
>
> Hmmm $26/lb for nitric acid? and $61 for MMH?
> That seems awful high for commodity chemicals that the
> rocket in
At 02:42 PM 9/26/2003 -0700, you wrote:
Doug Jones wrote:
>
> Stumbled across this today-
> http://www.desc.dla.mil/DCM/Files/MissileFuelPricesFY04.pdf
>
> Bulk prices converted to $/lb-
>
> Prop $/lb
> LOX 0.0405 ($81/ton)
> N2O4 18.50(various MON concentrations)
> RFNA 26.2
At 02:42 PM 9/26/2003 -0700, David Weinshenker wrote:
Hmmm $26/lb for nitric acid? and $61 for MMH?
That seems awful high for commodity chemicals that the
rocket industry has been buying in bulk for years...
I'd guess that most of that cost is due to the fact that both
those chemi
At 12:50 PM 9/26/2003 -0700, Doug Jones wrote:
The price of LOX kinda drives a stake through the heart of airbreathing
concepts...
The price of LOX was never a serious driver for looking into air
breathing propulsion, so I don't really see how that follows.
-p
"No science with
Doug Jones wrote:
>
> Stumbled across this today-
> http://www.desc.dla.mil/DCM/Files/MissileFuelPricesFY04.pdf
>
> Bulk prices converted to $/lb-
>
> Prop $/lb
> LOX 0.0405 ($81/ton)
> N2O4 18.50(various MON concentrations)
> RFNA 26.25
> H2O2 70% 1.05(Higher conc TB
Stumbled across this today-
http://www.desc.dla.mil/DCM/Files/MissileFuelPricesFY04.pdf
Bulk prices converted to $/lb-
Prop $/lb
LOX 0.0405 ($81/ton)
N2O4 18.50(various MON concentrations)
RFNA 26.25
H2O2 70% 1.05(Higher conc TBD)
MMH 61.00
RP1 0.46($3/ga
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