[ERPS] H2O2 SSTO

2003-09-26 Thread Thomas McNeill
I have recently been doing the math for SSTO using H2O2 and other similar Isp combinations. To attain the correct DeltaV you either need a very high Isp or a very low mass ratio, am I correct? Anyone here an advocate for using H2O2 on a SSTO craft? I continue to calculate very high G

Re: [ERPS] H2O2 SSTO

2003-09-26 Thread Alexander Mikhailov
Hi, Kirill Levin developed a good software for modelling orbital rocket launches. It's in the form of Excel spreadsheet, has many existing major rockets as samples, and there is a nice documentation page. http://www.geocities.com/levinkirill/SpaceModel/eng/ Alex

Re: [ERPS] H2O2 SSTO

2003-09-26 Thread Thomas McNeill
I gave an example based on 300 or so Isp, which is a reasonable approximation for Peroxide/RP1. (warning - I did not do the actual math, I am known to make errors when just grabbing numbers off the top of my head, but I'm pretty sure I remembered it right.) Dave I was calculating

Re: [ERPS] H2O2 SSTO

2003-09-26 Thread Randall Clague
On Fri, 26 Sep 2003 06:23:57 -0700 (PDT), Thomas McNeill [EMAIL PROTECTED] wrote: I was calculating around 230 for an ISP. I have seen 300 and up to 320 on Astronautix.com but wasn't sure how easy that was to attain with H2O2. It isn't easy at all. It may be achievable. Anyone know where to

Re: [ERPS] H2O2 SSTO

2003-09-26 Thread Thomas McNeill
There's a couple old DOS program called PROPEP and CET that will tell you all sorts of interesting things about propellant combinations. PROPEP has a GUI front end called GUIPEP. I got the pair off the ARocket sever. I have that somewhere. I had once found a study from a university on

Re: [ERPS] H2O2 SSTO

2003-09-26 Thread Henry Spencer
On Fri, 26 Sep 2003, Thomas McNeill wrote: ...the correct DeltaV you either need a very high Isp or a very [high] mass ratio, am I correct? Correct... or some reasonable combination thereof. You need an excellent mass ratio unless your Isp is most unreasonably high. Anyone here an

Re: [ERPS] H2O2 SSTO

2003-09-26 Thread Randall Clague
On Fri, 26 Sep 2003 08:44:18 -0700 (PDT), Thomas McNeill [EMAIL PROTECTED] wrote: I have that somewhere. I had once found a study from a university on a NOP (Nitrous Oxide/Propane) engine. I was hoping to find out if more research had been done on combinations of N2O with other fuels. We use