[JudgemAll]

Both closed loop cycle designs of the 60s , and while the Russian RD180/170 design is more complicated , it is less limited in size and fuels, and more powerful and efficient apparently.

We are still struggling to make a similar Soviet complex self sufficient design, almost as if it was driven by ideology and genius to make it work at the same time.

[Steely Tom]

Turbine engines that operate with an exhaust pressure of 3000 psi make me nervous, especially when they are hooked up to pumps that are pumping close to a ton of high explosive every second.