[ExI] Reaction Engine's press release on the precooler heat exchanger

[Keith Henson]

This may not seem like a really big deal, but it is a major key (along
with laser propulsion) to low cost access to space.

https://docs.google.com/open?id=1mkaWbVjvEW-BSXZtGywYs73AsAhhKe0ZKyf3ejRuxeOyAZ-8beFAeiTgzBZN

It is one of two elements that makes low cost power satellites possible.

Keith