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Old October 28th 17, 03:10 PM posted to sci.space.policy
Jeff Findley[_6_]
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Posts: 2,307
Default Were liquid boosters on Shuttle ever realistic?

In article . com,
says...

On 2017-10-27 06:27, Jeff Findley wrote:

Again, SpaceX has publicly stated the first reuse of a first stage cost
less than half the cost of building a new one.


Is that PR speak or "auditor" speak? The first reflown stage was not
the first landed stage. Say the first reflown stage uses some engines
that were refurbished from other recovered stages, and their reburb
costs billed to "R&D". Not saying this is what happened, but just one
way to skew numbers for good PR.


This was a statement from Shotwell, so I'm personally comfortable that
they tracked the cost to refurbish that particular stage because that's
an important piece of data to track, even during development.

Customers are already choosing to fly on refurbished first stages
because it gets their payloads in orbit faster


But lets wait until SpaceX actually delivers on a launch rate. Not
doubting it will, but the sample size right now is too low to allow
conclusions.


Where the hell have you been? They've launched 15 times so far in 2017
and are on track to launch 19 times total for this year. I'll even
provide a cite:

SpaceX unlocks ?steamroller? achievement as company eyes 19 launches in
2017, ERIC BERGER - 10/27/2017, 9:21 AM

https://arstechnica.com/science/2017...to-double-its-
launch-output-for-any-previous-year/

SpaceX has done proof of concept. It appears extrememy promising. But it
hasn't yet proven it will deliver that launch rate.


Bull****. They're delivering this year with a combination of new and
flight proven first stages.

Just because SpaceX has very good image that gives people confidence it
will deliver doesn't provide proof that it will deliver.

We are still talking about ODDs that SpaceX will deliver being very
high. So if you were betting, you'd bet SpaceX will deliver. But we're
still talking about odds because this is too new to have empirical evidence.


LOL, the empirical evidence is right before your eyes. It's not my
fault that you can't see it.

Jeff
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