just 2 small things a swirl sufficent to mix propellants would be a "Bad Thing" (TM pat pend) in a rocket with a single motor, the torque it would put on the rocket would probbably be signficant. i think it may be better to have the configuration is something of a dome shape with fuel being injected above the mix point of the generators, this would however lead to an oxygen rich wall which is also not a good thing.
the gas generators could well interact given that the speed of sound in the chamber is high and the flow velocity is relitivly slow it depending on a whole bunch of stuff it could set up a sort of "side to side" chuffing only faster more like a resonance, going on a gut feeling here but i think that would be much more pronounced with fewer larger generators. AFAIKR the V2 had many many quite small "generators" . ----- Original Message ----- From: "Alex Fraser" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, July 31, 2002 12:58 PM Subject: [ERPS] Multiple chamber engine > Use multiple chambers in a H2O2 rocket. I was thinking arranging > them like the cylinders in a radial piston engine would work. Three > would be a good number. Set them so that they joined the thrust chamber > off center so they would cause a vortex in it. > > Some points in favor of multiple chambers; > > - Throttling range would be very broad. Kick in another generator when > you need it. > > - separating the gas generator from the thrust chamber would allow > optimization of the two different functions. > Optimum catylyst shape might not be best thrust shape. > > - A nice swirl would be a good place to mix other fuels. It would be > easier to protect the catalyst from contamination, > > - Firing one engine could warm up the engine at a great savings in fuel. > > Some points I can't figure out on multiple chambers; > > - could you get the engine to work efficiently at different pressures? > Can you have a variable geometry nozzle? > > - would the gas generators interact, how? > > > -- > >>>>>>>>>>>>>>>>----<<<<<<<<<<<<<<<<< > ........ Alex Fraser N3DER ......... > ......... [EMAIL PROTECTED] ....... > [~]_>^</\-[~]_>^</\-[~]_>^</\-[~]_>^< > > > _______________________________________________ > ERPS-list mailing list > [EMAIL PROTECTED] > http://lists.erps.org/mailman/listinfo/erps-list _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
