Re: [ERPS] Spaceshot 2001 finally getting off the ground in2002

2002-06-01 Thread John Carmack
At 11:42 PM 5/31/2002 -0700, you wrote: >John Carmack wrote: > > > > > > You are running ahead of us, but not too much. We are on our fifth drum of > > peroxide now. > >Well, that's just the _latest_ batch of empties, we've gone through >about 10 or 12 altogether :) > I concede. We won't have t

Re: [ERPS] Spaceshot 2001 finally getting off the ground in2002

2002-06-01 Thread David Weinshenker
John Carmack wrote: > What, you are telling us that your 400 pounds thrust engines are really 320 > pound thrust engines? A tad disingenuous. > > And come on, don't you really want "grossly overpowered" in your rocket > plane? :-) ISTR that with both engines lit, the EZ-Rocket _has_ to fly in a

Re: [ERPS] BayCon micro-report

2002-06-01 Thread Ian Woollard
Theoretically, yes. In practice they'd never *quite* spin at the same rate. At these kind of rotation speeds even 1% difference is 1000s of rpm. Plus, this current design of engine isn't throttleable but variations on the design of course could be. Still, the potential for SSTO is there with a

Re: [ERPS] BayCon micro-report

2002-06-01 Thread Randall Clague
On Sat, 01 Jun 2002 02:11:01 +0100, Ian Woollard <[EMAIL PROTECTED]> wrote: >There's one awkward issue with this design though- what stops the body >of the rocket turning with the engine? The bearing. Is it going to be 100% effective? No, nothing ever is. >I mean sure, you can add another th

Re: [ERPS] BayCon micro-report

2002-06-01 Thread Henry Spencer
On Sat, 1 Jun 2002, Randall Clague wrote: > >There's one awkward issue with this design though- what stops the body > >of the rocket turning with the engine? > > The bearing. Is it going to be 100% effective? No, nothing ever is. As with Roton, in principle all you need is an electric motor p

[ERPS] Virtual lunar colony/lunar yahoo/web cluster

2002-06-01 Thread Sean R. Lynch
I think it's about time for us to set up a lunar colony. For practice, first let's set up a hypothetical one. Certain ERPS members have the following moon-ish domains: (let me know if others have them and want to participate) lunacity.com freeluna.com terraluna.org My proposal is to set up a d

[ERPS] Re: Archive available in mbox format

2002-06-01 Thread Lars Magne Ingebrigtsen
"Sean R. Lynch" <[EMAIL PROTECTED]> writes: > Lars, this is as much mail as I'm going to dig up, so feel free to pipe > them into the newsgroup. Thanks! I'm injecting them into the newsgroup as I spea^H^H^H^Htype... -- (domestic pets only, the antidote for overdose, milk.) [EMAIL PROTECTED]

Re: [ERPS] BayCon micro-report

2002-06-01 Thread Sean R . Lynch
With an even number of engines, you could handle all your roll control, at least when you're under power, with brakes: apply the brakes on one or more engines, and it will apply a torque to the rocket. With an even number of engines, you could even handle an engine out scenario by applying bra

Re: [ERPS] BayCon micro-report

2002-06-01 Thread Doug Jones
Henry Spencer wrote: > > On Sat, 1 Jun 2002, Randall Clague wrote: > > >There's one awkward issue with this design though- what stops the body > > >of the rocket turning with the engine? > > > > The bearing. Is it going to be 100% effective? No, nothing ever is. > > As with Roton, in principle

Re: [ERPS] BayCon micro-report

2002-06-01 Thread Alex Fraser
Fugoids At these RPMS would there be enough force to torque a frame? Any frame just enough... I'm thinking of gyro forces acting at a right angle. Wouldn't weather cocking start a progressive corkscrew? > > > Yep. I put a fair amount of work back at RotRock into means for > torquing that huge m