H-IIA (2001-Active)
First Flight: 202 = Aug. 29, 2001; 2024 = Feb. 4, 2002; 2022 = Feb. 26, 2005; 204 = Dec. 18, 2006
Last Flight: (Active)
Stages: 2
Total Mass: 285 tons to 445 tons
Payload Mass: 10,000-15,000 kg to LEO; 4,100-6,000 kg to GTO
Diameter: 4 m
Length: 53 m
Booster Stage
Type: All = 2 to 4 SRB-A/SRB-A3; 2022/2024 = 2 to 4 Castor 4AXL
Arrangement: each 1 x Solid
Thrust (kN): SRB-A stage = 4,520-9,040; Castor stage = 1,490-2,980
Propellant: Solid
ISP: SRB-A = 280 s; Castor = 283 s
ISP (sea level):
Burn Time: SRB-A = 120 s; Castor = 60 s
Gross Mass: ?
First Stage
Type: Core
Arrangement: 1 x LE-7A
Thrust (kN): 1,098
Propellant: LOX/LH2
ISP: 440 s
ISP (sea level):
Burn Time: 390 s
Gross Mass: ?
Second Stage
Type: Core
Arrangement: 1 x LE-5B
Thrust (kN): 137
Propellant: LOX/LH2
ISP: 447 s
ISP (sea level):
Burn Time: 534 s
Gross Mass: ?