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Delta·McDonnell Douglas

Delta IV Heavy

retired
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Specifications

Status
retired
Height
72 m
Diameter
5 m
Mass
733,000 kg
Stages
2
Thrust
8,674 kN
Payload to LEO
28,370 kg
Payload to GTO
14,210 kg
First flight
2004-12-21
Total launches
16
Success / Fail
15 / 1

The Delta IV Heavy (Delta 9250H) is an expendable heavy-lift launch vehicle, the largest type of the Delta IV family, and is the world's second highest-capacity rocket in operation. It is manufactured by United Launch Alliance and was first launched in 2004.

Propulsion

First stage

3×RS-68A3,137 kN
LH2 / LOX · gas-generator
Aerojet RocketdyneIsp 412s (vac)since 2002three CBC cores

Second stage

RL10110 kN
LH2 / LOX · expander
Aerojet RocketdyneIsp 451s (vac)since 1963

Payloads it launched

16 loaded
USA 353
GEO
USA 345
GEO
USA 338
Payload
USA 314
LEO
USA 311
GEO
USA 290
LEO
PARKER SOLAR PROBE
Heliocentric
USA 268
GEO
ORION EFT-1
Payload
USA 245
LEO
USA 237
GEO
USA 224
LEO
USA 223
GEO
USA 202
GEO
USA 197 (DSP 23)
LEO
DELTA 4 DEMO SPACECRAFT
GEO