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RE: starship-design: Deceleration scheme (correction)


I wrote:
>OK, now you've done it. You've made me mad. >-|
>Sail size = A square m
>Sail mass: M = A * 0.0001 kg/m^2
>gamma at 0.9c = 2.29
>Momentum of the sail at 0.9c = gamma*M*v = A*0.0001*3E8*2.29 = A * 6.87E4 kgm/s

There should be a 0.9 in the line above:  = A*0.0001*0.9*3E8*2.29
It won't make much of a difference for the final outcome though.