[1.12.x] Cryogenic Engines: Liquid Hydrogen and Methane Rockets! (Jan 22, 2022)
KSP 1.12.x
Cryogenic Engines [2.0.6] Last Updated January 22, 2022
This modest part pack is designed to provide some new rocket engines that run either Liquid Hydrogen and Oxidizer or Liquid Methane and Oxidizer.
Liquid Hydrogen Engines
There are nine models provided, two in each of the 1.25, 1.875, 2.5 and 3.75m sizes and one in the 0.625,. These engines have better fuel efficiency than the KSP stock engines, up to 460s of Isp, but beware! They're
Your comparisons are kinda weird. You're comparing apples to oranges in a lot of cases there.
Cryo Engines
For a target DV and a constant payload, a cryogenic vehicle should be lighter than a LFO vehicle. It should be somewhat larger and slightly more expensive as a result. This has knock-on effects in that if your vehicle is an upper stage, it should be lighter to lift into orbit, and thus reduce the required LV size.
This is quite easy to show - use an example payload of decent