Kasei rocket

A heavy-lift launch vehicle to low Earth orbit and beyond, the Kasei (Mars in Japanese) launcher is meant as a competitor to Ares V or SLS. It uses much more powerful hydrogen-oxygen engines so that the core can lift itself without boosters, but boosters can increase its capacity to orbit. Its diameter is identical to that of SLS.

Height: 108 meters
Core Diameter: 8.4 meters

Core: 1333.18 tons without payload
Core alone payload capacity (LEO): 95 tons

Upper Stage: 335.23 tons; 31.07 tons dry
715548.4 liters liquid hydrogen
222438.4 liters liquid oxygen
170.4 liters liquid methane (RCS)
1 x ED-9V
4351.7 kN thrust (vac.)
456 s ISP vac.
Burn Time: 312.6 seconds

Lower Stage: 993.18 tons; 96.55 tons dry
2109388 liters liquid hydrogen
654847.3 liters liquid oxygen
5 x ED-9
4016.4 kN thrust (vac.) each
385.3 s ISP s.l. – 434 s ISP vac.
Burn Time: 190 seconds

Core + 4 Boosters: 2249.96 tons
Core + 4 payload capacity (LEO): 150 tons

Optional Boosters (each): 229.52 tons; 11.76 tons dry
116586.7 liters liquid methane
147363.3 liters liquid oxygen
5 x ED-8
1013.16 kN thrust (vac.)
322 s ISP s.l. – 338 s ISP vac.
Burn Time: 142.5 seconds