[amsat-bb] Re: Satellite Satire
vk3jed at gmail.com
Wed Nov 30 01:20:11 PST 2011
At 11:57 AM 11/30/2011, Lowell White wrote:
>Please enlighten me if indeed there might be a way to get something up (and to
>stay up) more economically.
Well, a bit of physics here. To get from the Earth's surface to LEO
requires 10 km/S of delta-V. Even if you could get a payload to
orbital altitude by some hypothetical means, you would still need to
add 7.5km/S delta-V to bring it up to orbital velocity. From 30km
(typical high altitude balloon), the requirement would be somewhere
in between 7.5 and 10 km/S, which still means a considerable amount
of fuel required.
>insertion? If the bird and booster weights were small enough, could a wx
>balloon lift them adequately?
I suspect the rocket would still be very heavy.
73 de VK3JED / VK3IRL
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