Actually it is a larger fraction than you would think. Because of
Atmospheric Drag.
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 9/18/2013 12:59 PM, Bryce Salmi wrote:
It's to my understanding that the Rockoons didn't go to orbit, but did
reach space with ballistic trajectories. The hard part with orbit is the
pure speed needed. RIT had a
program<http://www.rit.edu/kgcoe/electrical/meteor/meteor/Home.html>for
an orbital rockoon type project called METEOR a while back but it has
since been ended. I believe the advantages of launching from 30+ km
altitude are quickly outweighed by the added complexity of the system as a
whole. In the end the rocket fuel for most orbital rockets needed to get to
37km altittude is a small fraction of the total fuel on board anyways.
my $0.02
Bryce
KB1LQC
On Wed, Sep 18, 2013 at 10:30 AM, Joe <n...@mwt.net> wrote:
It's called a Rockoon, and has been done before, google it.
Thing is now days it's launch would have to be permitted by the government
just as much as any other major rocket flight. or get out of the USA like
into the gulf of mexico to do the launch.
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 9/18/2013 12:01 PM, Rob wrote:
I'm not a rocket scientist but I have an active imagination .....
Thinking of a recent XKCD .... to achieve orbit .... the hard part isn't
the altitude it's the velocity ....
Would there be any advantage (cost effective) carrying a launch vehicle
say
to 37KM ... think Red Bull Stratos .... and firing the engines there???
So you're already 37KM up .... there's a lot less atmospheric drag ....
This would be like a drop from a plane ... but even higher ....
Thoughts???
de KA2PBT
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