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Thanks for the concept. It would seem all the technology required is very near term. Is there a report for this study that is publicly available? I would not mind reading the details.

Thanks for the quick responses! I see there some significant problems. The following is the problems as I understand them. 1. I cannot pump enough gaseous oxidizer out of the rail to supply the rocket motor. Comment: I don't really understand, with proper sizing of the injection apparatus...

I am a mechanical engineer working on the system design of a material transport system for space construction "ie. an Earth based mass driver". Instead of the electromagnetic launcher traditionally proposed I have proposed a rocket sled that traverses the launch rail and collects an oxidizer...

Can any one help me locate information about the interference drag -slip-steam effect around in-line cylinders? I am trying to evaluate the idea of launching a stream of material pellets through the atmosphere. Thanks, Dean

Is there an aerodynamic advantage to launching a stream (series) of small hypervelocity cone-like projectiles (say 1 kg total mass) from Earth surface to Earth orbit vs. one large (1000 kg) mass? Machine gun vs. cannon ball scenario. The idea is that the initial projectiles will reduce the...