Realistic Saber Engine stats

[TeeGee]

Hi everyone

I was looking at wikipedia for the Saber engine stats and was wondering how I could turn the realistic stats into kerbal stats. I was looking at the part config folder for B9 saber engine and was a little confused at what lines of code did what.

I am just trying to create a more realistic set of engine stats.

http://en.wikipedia.org/wiki/SABRE_%28rocket_engine%29

Propellant Air/LO2 / Liquid hydrogen[1]

Cycle combined cycle precooled jet engine + closed cycle rocket engine

Performance

Thrust (vac.) ~ 2,940 kN[2]

Thrust (SL) ~ 1,960 kN[2]

Thrust-to-weight ratio up to 14 (atmospheric)[3]

Isp (vac.) 460 s[4]

Isp (SL) 3600 s[4]

[AfterburnerDave]

That efficiency is realistic enough , but remember those engines are massive, like 3.5 meters, you have to halve the thrust to make it accurate for KSP.

[TeeGee]

How about its fuel efficiency and air intake requirement? Im running kerbal on realistic settings and can't even get out of the atmosphere without either burnout or running out of liquid H2.

[TeeGee]

How do we change an engines intake air value in the engine cfg. file?