I agree in that a lack of peroxide experience and a reliable supply of it
prevent it from becoming mainstream. The cost of developing all the required
expertise is not really offset by a mere 12% ish performance increase. It would
be great if combined with methalox upper engines (20% improvement over lox
kero), but I doubt that will ever be tried in the US at least.
Now you said that there are other factors to take into account when the
technologies are different, what is in your opinion a factor that could
negatively impact the cost of peroxide LVs. Is there really anything that is
harder to do with it than Lox? I would argue that we should even see some
simplified and less costly systems, like turbines, closed cycle engines,
cooling, fuel related procedures, etc. I am not expecting it to be amazing, but
perhaps a 10% cost reduction or so.
In the end though, the best way to reduce cost would be by outsourcing
everything to India or some other cheap country. 3x cheaper engineers, plus the
previous extras, and maybe you can hit sub 1000 usd/kg.
Hoping to that someday....
IB
________________________________
De: Henry Spencer<mailto:hspencer@xxxxxxxxxxxxx>
Enviado el: 06/09/2016 21:39
Para: Arocket List<mailto:arocket@xxxxxxxxxxxxx>
Asunto: [AR] Re: Issues with operating at low chamber pressure
On Tue, 6 Sep 2016, ignacio belieres wrote:
Well if you accept the correlation that cost tends to go up
with dry mass, and that volume is in a direct relationship to dry mass...
...with a room temperature liquid propellant you dont have to deal with
cryofluids, prechills, cryovalves, insulation, reaally good thermal
control, lox vents, and extra annoying stuff.
A peroxide compatible 1 inch ball valve will probably be 20 times
less expensive than an equivalent Lox valve.