Beaming laser power to ion drive is 300-400 times more thrust than just laser photonic sail
by brian wang from NextBigFuture.com on (#352MF)
A 100 meter to 150 meter solar array that is attuned to the lithium ion will be about 70% efficient. JPL is working on the gridded lithium ion arrays to achieve 60,000 ISP. There is work on 60 meter...
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