[ExI] Specific Impulse

[John Clark]

On Dec 10, 2010, at 9:28 PM, spike wrote:

>> On Behalf Of Adrian Tymes
>> If it's just a matter of exhaust velocity, what about ejecting stuff at 100+ km/s?
> 
> Sure, but where do you get all the energy?

From americium.  And 100 km's is bush league, an americium rocket could give you 200,000 km/s.

 John K Clark


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