cryoscum wrote:Let's for the moment forget about the Space Act...
"Insurmountable" refers to the fact that you cannot keep the balloon within any reasonably sized cylinder before it hits 100k'. A twin balloon carrying a load of a fully loaded small rocket, launch rail & its own tracking equipment will be 100+km away (horizontal distance) before it gets to 20km high. The 6W transmitter you need to track it at that range (which you'll have to get a license for, BTW) will have to be on board the rocket too, toasting anything else you have in there. Accordingly the rocket would need to become bigger to fit it all, the balloons will need to be bigger again and your range before launch-ready goes up again. No LCO or RSO would touch such a thing, so you'd need to do any of your approvals yourself and good luck with CASA. They'll love the idea of a chunk of explosive being sent into the great blue yonder before it self-launches, or at the very least stay up there for hours. Tell me when I should stop...
No offense mate, but you should remember that you're not the first one to consider this and you won't be the last. For amateur rocketry the rockoon is nothing more than something that should be attempted with 1/4 A-motors and a 300mm diameter helium balloon...
Thanks, finally someone points out a problem. No offence taken by the way, I know I'm not the first to consider it. If I was, I wouldn't have been able to find half the information I did
Just thought the Rockoon platform might prove a more inexpensive launch, albeit certainly a far more complicated one.
That's certainly a problem I never found nor considered. I wonder if a lesson could be taken from government/commercial sounding rockets? How do they provide telemetry? Through satellites would be my guess, but I might be wrong. They often communicate data from 100-400km's away so perhaps looking at that could be helpful. http://www.cinele.com/index.php?option= ... Itemid=254
That might have something useful in there... From what I can see the second one would fit in the rocket I simmed, so I don't see why you would need to make the rocket bigger. Although I don't really know squat about transmitters, so I'm not in a position to comment on that issue.
Yeah I can imagine trying to convince the authorities would become a nightmare... Recovery would become easier with a glider though. Although when I say that don't mistake me for saying easy. Easier, but still a nightmare.
Honestly, while the rockoon would most likely be cheaper, the complexities involved would probably make it impractical for an amateur rocket space shot with man power any less then the GoFast Rocket team. And even then the paper work would be a nightmare.
Rockoon = Cheap, Incredibly Complicated, Stressful and Nightmare-Loads of Paperwork
2 Stage Ground Launch = Expensive, Relatively Simple (compared to rockoon), Painful Paperwork
So far that's the verdict I've drawn. Thanks for raising the transmitter issue, I honestly never thought of that.