[AR] Re: Another small launch company bites the dust - Aphelion Orbitals calls it quits
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: Arocket List <arocket@xxxxxxxxxxxxx>
- Date: Fri, 14 Dec 2018 18:05:22 -0500 (EST)
On Fri, 14 Dec 2018, Ben Brockert wrote:
There's also the simple problem, as XCOR found, that people who
haven't developed a complete propulsion system have no idea how much
that actually costs and will balk at a competently priced contract.
It's easy to think that a pressure fed thrust chamber demo is 50% of
the way to a good working engine, and it really really isn't.
"If you think it's really easy and we think it's very expensive, that
might be because you have surprises coming." -- Jeff Greason, 2006
Henry
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