This part is from Hermes Interplanetary Spacecraft Dev Files With WIP MaV (Credit to xxhansonmaxx & OrbitalEscape)
cost:
1500
mass:
6
category:
Propulsion
TechRequired:
advScienceTech
engine_data:
MAV1
{"isp"=>{"vac"=>290.0, "atmo"=>260.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>375.0}
resources:
LiquidFuel
720.0
Oxidizer
880.0