[ExI] Power satellites microwave power transmission

[Brent Allsop]

Hi Keith,

What do you think about what these Japanese are working one:

http://www.dailymail.co.uk/sciencetech/article-1390682/Plans-gigantic-lunar-ring-solar-panels-beam-energy-Earth-unveiled.html?ITO=1490

How does that compare with the Geo Sync stuff you are talking about?

Brent Allsop




On 5/26/2011 6:16 AM, Keith Henson wrote:
> On Thu, May 26, 2011 at 1:20 AM, Eugen Leitl<eugen at leitl.org>  wrote:
>
> snip
>
>> An ideal setup for an SPS is to make solar cells double as phased
>> array on on the other side, so they can use realtime beamforming to track
>> ground-side rectenna or rectennas array(s) (the beam can be retargeted within
>> few ~ms).
> Solarn has proposed this design.  They think they can get 17 kW per kg
> of material, 85 times the 5 kg/kW I have been using.
>
> If they are right and I am right about reducing the cost to GEO, then
> the energy and carbon problems will be oversolved.
>
> Keith
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