Re: 2007 NASA Beam Power Challenge, $1M prize (fwd)

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Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Thu, 17 May 2007 20:53:53 -0700
From: Jim Lux <jimlux@xxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>, tesla@xxxxxxxxxx
Subject: Re: 2007 NASA Beam Power Challenge, $1M prize (fwd)

At 01:23 PM 5/17/2007, Tesla list wrote:
>Original poster: List moderator <mod1@xxxxxxxxxx>
>
>
>
>---------- Forwarded message ----------
>Date: Thu, 17 May 2007 04:23:22 -0700 (PDT)
>From: William Beaty <billb@xxxxxxxxxx>
>To: Tesla list <tesla@xxxxxxxxxx>
>Subject: 2007 NASA Beam Power Challenge, $1M prize

Note that the article just talks about the 2005 and 2006 challenges.

http://www.elevator2010.org/ has the latest rules, etc.

The purse is $500K for the beam power aspect.
Payload must be 10-25 kg
climb 50m at a speed no less than 2m/sec
(that's 25 seconds)

mgh = 10*9.8*50 = about 5000 Joules
25 seconds means Pavg of 200W

Just to ballpark something simple like solar cells.. assume you get 
25% overall efficiency from light to motor.  You'll need about a 
square meter of solar cells.



>Beam some wattage to a space-tether crawler device for large prizes
>
>  2007 Space elevator games
>  http://www.space.com/news/050323_centennial_challenge.html
>
>
>Prizes also offered for tether material designs.   Carbon nanotube is
>expected to be the main contender.
>
>
>
>
>"I know --- but I won't tell ya!"
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>William J. Beaty                            SCIENCE HOBBYIST website
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