Re: Air Force Signs Off on SRB-CEV

Andi Kleen wrote:
> "Ed Kyle" <edkyle99@xxxxxxxxxxx> writes:
>
> > If Delta II is shut down, and it
> > seems the pressure is on to shut it down, then
> > this co-production setup, where the Alliance will
> > supposedly pick the best vehicle for each payload,
> > will soon find itself picking only the better of
> > the two EELVs (and I think we all know which one
> > it is) over and over again. They won't have to
>
> Which one is it?

I shouldn't wade into this, because there will be
some definite differences of opinion here, but I
do think that a majority of the engineering-
oriented clear-thinkers would say that one of the
two not only has a better design concept but also
has had a cleaner, better operating record so far.

The better one, and I dare not mention it by name
lest I be crucified, is smaller and weighs less dry,
but can carry substantially more payload in its
core form. The better one has more core liftoff
thrust using a simplier, non-cryogenic fuel. The
better one uses a much simplier launch pad design.
The better one has flown more often, and has had
shorter, less problematic launch campaigns. The
better one hasn't experienced any major in-flight
anomolies. The better one has a longer track record,
with some of its components being directly derived
from equipment that first flew more than 40 years ago.
The manufacturer of the better one has lost far,
far less money on its EELV to date than the
manufacturer of the other one.

Don't get me wrong. I think that both EELV designs
are remarkable achievements. But I also think that
one of them is better than the other.

- Ed Kyle

.

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