KitemanSA wrote:Source?WizWom wrote: So, 3000 kg/MW using fission, ...
Um... the PDF of the paper from NASA??
93143 wrote:You didn't read very far. It drops to less than 2 kg/kW for power levels over 3 MW, and approaches 1 kg/kW at 10 MW. 500 MW is way outside the studied range...
Also, that's for a fission plant. A p-¹¹B Polywell with direct conversion has a number of advantages in terms of power-to-weight ratio.
WizWom wrote:However, the total output of the 747-8's engines is 66500 lbf
DeltaV wrote:For now, I'd be happy with access to and from LEO. The zero g will help my back. In case I spot a nice island from orbit, I'd want to be able to visit it without needing an Act of Congress. Refueling needs won't be a concern with Polywell, at least for trips of a week or less. Regarding hyperdrive, I can do without that for now. Who needs the hassle of Klingons, Romulans, Ferengi, Wraith, Replicators, Orai, 14 ft tall silicon-based insects with molecular acid blood, etc. Maybe later, if I get bored.
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