Adds two new rocket part types; the Advanced Rocket Part and, if Space Age is enabled, the Interplanetary Rocket Part. Both of these make rockets cheaper in exchange for more complex production lines
it seems 2.1.20 broke this one:
Failed to load mods: Error while loading item prototype "biofuel-cell" (item): ItemPrototype::fuel_category was removed. Please use ItemPrototype::fuel_categories.
Modifications: Advanced Rocket Parts
