Delta IV

Country of Origin: United States
Manufacturer: Boeing IDS / United Launch Alliance

Height: 63-72 m
Diameter: 5 m
Payload to LEO: 9420 – 28790 kg
Total Mass: 249.5 to 733.4 tons

Launch Sites: Cape Canaveral SLC-37B, Vandenberg SLC-6
First Flight: November 20, 2002
Last Flight: Active
Total Launches: 32
Successful Launches: 31

Delta IV Medium – 8510 kg to LEO

Stage	Diameter	Propellant	Engine	Time	Thrust (Vac.)	ISP (SL/Vac.)	Mass/Empty Mass
1 (CBC)	5 m	LH2 / LOX	RS-68A	245 s	3593.6 kN	360 / 412 s	226.4 / ? tons
2 (DCSS)	4 m	LH2 / LOX	RL-10-B-2	850 s	110 kN	? / 462 s	24.17 / ? tons

Delta IV M+ (4,2) – 12000 kg to LEO

Stage	Diameter	Propellant	Engine	Time	Thrust (Vac.)	ISP (SL/Vac.)	Mass/Empty Mass
Boosters	1.5 m	HTPB	2 x GEM-60	91 s	2 x 879 kN	245 / ? s	33.638 / 3.941 tons
1 (CBC)	5 m	LH2 / LOX	RS-68A	245 s	3593.6 kN	360 / 412 s	226.4 / ? tons
2 (DCSS)	4 m	LH2 / LOX	RL-10-B-2	850 s	110 kN	? / 462 s	24.17 / ? tons

Delta IV M+ (5,2) – 10220 kg to LEO

Stage	Diameter	Propellant	Engine	Time	Thrust (Vac.)	ISP (SL/Vac.)	Mass/Empty Mass
Boosters	1.5 m	HTPB	2 x GEM-60	91 s	2 x 879 kN	245 / ? s	33.638 / 3.941 tons
1 (CBC)	5 m	LH2 / LOX	RS-68A	245 s	3593.6 kN	360 / 412 s	226.4 / ? tons
2 (DCSS)	5 m	LH2 / LOX	RL-10-B-2	1125 s	110 kN	? / 462 s	30.7 / ? tons

Delta IV M+ (5,4) – 12820 kg to LEO

Stage	Diameter	Propellant	Engine	Time	Thrust (Vac.)	ISP (SL/Vac.)	Mass/Empty Mass
Boosters	1.5 m	HTPB	4 x GEM-60	91 s	4 x 879 kN	245 / ? s	33.638 / 3.941 tons
1 (CBC)	5 m	LH2 / LOX	RS-68A	245 s	3593.6 kN	360 / 412 s	226.4 / ? tons
2 (DCSS)	5 m	LH2 / LOX	RL-10-B-2	1125 s	110 kN	? / 462 s	30.7 / ? tons

Delta IV Heavy – 25980 kg to LEO

Stage	Diameter	Propellant	Engine	Time	Thrust (Vac.)	ISP (SL/Vac.)	Mass/Empty Mass
Boosters (CBC)	5 m	LH2 / LOX	2 x RS-68A	245 s	2 x 3593.6 kN	360 / 412 s	226.4 / ? tons
1 (CBC)	5 m	LH2 / LOX	RS-68A	328 s	3593.6 kN	360 / 412 s	226.4 / ? tons
2 (DCSS)	5 m	LH2 / LOX	RL-10-B-2	1125 s	110 kN	? / 462 s	30.7 / ? tons