"Mike Walsh" wrote in message
...
The estimates I have read on the cost of Space Ship 1 have run from
$20 to $30 million so on my $100 million estimate I was off by a factor
of 3.5 to 5. If the suborbital operational system comes in as predicted
by Branson then I will have been off by a factor of 5.

OK, my original estimate was based on what it has cost the government
to accomplish similar things. Len Cormier and George Herbert have
consistently claimed well engineered private projects could beat the
government costs by a factor of 5 to 10.

To me, this is absolutely the most important thing that SS1 has
demonstrated.

Jeff
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