Would it be possible to have a pulsed valve and a throttle feeding the same
chamber? I'm thinking of in a parallel injector configuration. Pulsed flow limited
to half the trottled flow. A single throttle valve feeding all four engines through
a manifold for sustained lift and pulse valves on each engine for attitude control.- Could it be made to run clear through a standard cat pack, that is not milky - The two feeds in to the same chamber would make for some interesting flow problems P1, P2 differences times 2 systems, 4 engines using one pressure difference from the manifold and each engine having a separate pressure difference from the pulsed valves. I have attached a drawing, but I haven't a clue on the math. John Carmack wrote: > At 11:57 PM 10/2/2002 -0400, you wrote: > >And you have achieved deep throttling with off the shelf ball valves and > >actuators? > >What range are you achieving and most important at what rate? With out the out > >board pulsing thrusters could you land softly? This of course would have > >to be on > >a vertical rail to null out instability. Just simple up and down controll > >with the > >center main engine. > > You can crack the valve open and just get a push of wind out of the > engines. At normal voltage, the fast KZCO valves go from full open to full > close in 0.8 seconds. If you run it at 24 volts, it drops to 0.5 seconds, > but probably isn't good for the motor. Note that ball valves do most of > their opening in only 50% of their travel, so partial adjustments are even > faster than they sound. > > We are moving back to four equal engines instead of a big engine and > attitude engines for our future propulsion systems, and I don't expect any > significant problems. > > John Carmack > > _______________________________________________ > ERPS-list mailing list > [EMAIL PROTECTED] > http://lists.erps.org/mailman/listinfo/erps-list -- >>>>>>>>>>>>>>>>----<<<<<<<<<<<<<<<<< ........ Alex Fraser N3DER ......... ......... [EMAIL PROTECTED] ....... [~]_>^</\-[~]_>^</\-[~]_>^</\-[~]_>^<
