Re: SpaceX NOT First Kwaj orbital launch

In article <VaudnSTm8stGajneRVn-vg@xxxxxxxxxxxxxxx>,
Josh Hopkins <nospam@xxxxxxxxxxxxxxx> wrote:
>I had thought Jarvis was the one that used dozens of RL10s, but Encyclopedia
>Astronautica says otherwise.
>http://www.astronautix.com/lvs/jarvis.htm

There were several iterations of Jarvis, and EA only shows the first one.

The problem was the engines. Hughes really wanted to use the F-1 and J-2;
if (dim) memory serves, they assumed that they could buy the ones in NASA
dead storage as a way of getting started and establishing a revenue stream
that would justify a production restart. But NASA wasn't cooperating.

After it became clear that the original scheme just wasn't going to work,
there was a lot of tinkering with alternatives, including ideas about very
large RL10 clusters.

The final version -- more Boeing than Hughes -- used shuttle SRBs and
SSMEs, with the latter recoverable.
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