http://ian.kluft.com/articles/space-access-2011/110407-01-afternoon.html
Gwynne Shotwell, President of SpaceX(lots here)
FH core almost (but not quite) full when boosters separate. NASA wants a fresh Dragons for CRS (because of costing uncertainties), so DragonLab will all be reflights. Might have redundant engines on second stage in future! Interested in electric propulsion. 10-15 years until first Mars mission.
Forgive a newbie to payload planning, but what destinations do those C3 values correspond to?
On the fresh Dragons point, was apparently the case that they had no idea what it would cost to refurb them when the CRS contracts were written, so NASA just specified new ones to allow for fixed contracts. The recovered Dragon is actually in better shape than they predicted, so the spacecraft costs for DragonLab are going to be pretty low.
A C3 of 90 (cm^2/cec^2) is pretty darn good.
Change tracks to using neutron flux from a bomb to deflect an asteroid. Asking for a redacted version of classified report...
Quote from: simonbp on 04/08/2011 04:30 amChange tracks to using neutron flux from a bomb to deflect an asteroid. Asking for a redacted version of classified report...Really? What medium to transmit the pulse?
Quote from: Comga on 04/08/2011 02:09 amA C3 of 90 (cm^2/cec^2) is pretty darn good. Shotwell said that was for a "very specific application", which I assume is either Uranus or Neptune (and probably Uranus given the Decadal survey).