global.AIRCRAFT_UPGRADES = [
	"lv_aircraft_engine",
	"hv_aircraft_engine",
	"ev_aircraft_engine",

	"black_steel_plated_airplane_propeller",
	"redblu_steel_plated_airplane_propeller",
	"stainless_steel_plated_airplane_propeller",
	"titanium_plated_airplane_propeller",

	"redblu_steel_landing_gear",
	"aluminium_landing_gear",
	"stainless_steel_landing_gear",
	"titanium_landing_gear",

	"redblu_steel_hull_reinforcement",
	"aluminium_hull_reinforcement",
	"stainless_steel_hull_reinforcement",
	"titanium_hull_reinforcement"
]

global.EXTRATERRESTRIAL_RAW_ROCKS = [
	'tfg:raw_anorthosite',
	'tfg:raw_basanite',
	'tfg:raw_syenite'
]

global.EXTRATERRESTRIAL_HARDENED_ROCKS = [
	'tfg:hardened_anorthosite',
	'tfg:hardened_syenite'
]

global.MOON_BIOMES = [
	'tfg:moon/lunar_plains',
	'tfg:moon/lunar_basalt_maria',
	'tfg:moon/lunar_gabbro_uplift',
	'tfg:moon/lunar_diorite_delta'
]

global.MARS_BIOMES = [
	'tfg:mars/martian_plains',
	'tfg:mars/martian_riverbed',
	'tfg:mars/martian_mountains'
]

global.UNIVERSAL_CIRCUIT_TIERS = ["ulv", "lv", "mv", "hv", "ev", "iv", "luv", "zpm", "uv", "uhv"];