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Chuck...

Posted by: Sigma - Fri Nov 23, 2012 9:12 am
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Chuck... 
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Post Chuck...   Posted on: Fri Nov 23, 2012 9:12 am
Could a very large and heavy weight drop down a track down a mountain, pulling a cable attached to a pulley that doubles or quadruples its movement on a different cable pulling something up a mountain, for long enough to reach a useful speed reliably, almost like a carriers launch cord, but much more Wiley Coyote.... then trigger liquid fuel rockets or solid etc.

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Post Re: Chuck...   Posted on: Fri Nov 23, 2012 5:23 pm
Yes, but its easier and cheaper to just build a rocket that provides the same energy.


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Post Re: Chuck...   Posted on: Fri Nov 23, 2012 5:41 pm
Yes, but can you reload the rocket with reusable green energy? And how is a rocket less expensive?

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Post Re: Chuck...   Posted on: Sat Nov 24, 2012 1:39 am
You can buy a lot of rockets and their propellants for the price of a hundred kilometer long/tall Rube Goldburg catapult/trebuchet contraption.


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Post Re: Chuck...   Posted on: Mon Nov 26, 2012 11:22 am
Sigma wrote:
Yes, but can you reload the rocket with reusable green energy? And how is a rocket less expensive?


Fuel is cheap - see the very recent Elon Musk talk (British Aerospace thing?). Rocket costs 60M, fuel cost for that rocket 200k. So a (possibly) reusable rocket is much cheaper than a very long catapult.


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