Nuclear powered drones? - 2 views
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LeopoldS on 02 Apr 12Not explicit but smells like RTGs
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dejanpetkow on 03 Apr 12"The effort contrasted and compared eight heat sources technologies, three power conversion, two dual cycle propulsion system configurations, and a single electrical power generation scheme." Yes, it's about RTGs, at least partially.
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Ma Ru on 03 Apr 12The quote "it was disappointing to all that the political realities would not allow use of the results" may refer to RTGs too :-)