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Delta IV Medium+ (5,4)

Delta IV Medium+ (5,4) was the highest-performance single-core Delta IV, combining one Common Booster Core, four GEM 60 solid motors, a five-metre cryogenic upper stage, and a five-metre payload fairing. Eight vehicles flew successfully from 2009 through 2019, all carrying Wideband Global SATCOM spacecraft.

Identity

Aliases
Delta IV M+(5,4)Delta IV Medium Plus 5,4Delta 4 Medium+ (5,4)
Family Name
Delta IV Medium+
Full Name
Delta IV Medium+ (5,4)
Reusability
expendable
Slug
delta-iv-medium-plus-5-4
Status
retired
Type
rocket
Variant Name
(5,4)

Details

Description
Delta IV Medium+ (5,4) was the highest-performance single-core Delta IV, combining one Common Booster Core, four GEM 60 solid motors, a five-metre cryogenic upper stage, and a five-metre payload fairing. Eight vehicles flew successfully from 2009 through 2019, all carrying Wideband Global SATCOM spacecraft.
Diameter M
5.1
Engines
  • Count
    1
    Name
    RS-68/RS-68A
    Placement
    core
  • Count
    4
    Name
    GEM 60
    Placement
    booster
  • Count
    1
    Name
    RL10B-2
    Placement
    upper
First Flight Year
2,009
Last Flight Year
2,019
Manufacturer Id
jd7aztg0m4tepcvsxqvs6fwv9d7kp30v
Operator Id
jd7aztg0m4tepcvsxqvs6fwv9d7kp30v
Parent Vehicle Family Id
nd7veg90vregh6hyz85x5dsvr985j89q
Payload Capacity Kg
Gto
6,890
Leo
13,370
Stages Count
2
Strap On Boosters Count
4

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Creation Time
7/14/2026, 8:52:11 AM
Updated Time
7/14/2026, 11:56:01 AM