DELTA IV HEAVY - Vehicle use: Satellite
American orbital launch vehicle. Originally designed and manufactured by Boeing and later Boeing/United Launch Alliance. The Delta IV Heavy is comprised of three single-engine common booster cores using liquid oxygen and liquid hydrogen, two of which are used as liquid boosters, with the third functioning as the first stage of the rocket. A single-engine second stage using liquid oxygen and liquid hydrogen is used for the upper stage of the rocket.
Variant
All
Launches
11
Failures
1
Realized
0.91
Predicted
0.85
50
51
53
52
55
56
54
57
58
59
60
61
62
64
63
65
67
66
69
68
71
72
70
73
74
75
76
79
77
78
81
80
83
82
85
84
86
87
88
89
90
91
92
93
95
94
96
97
99
98
01
00
02
03
04
05
06
07
09
08
11
10
13
12
15
14
17
16
18
19
20
21
22
23
24
12/21/2004 - Delta IV Heavy
PREMATURE ENGINE SHUTDOWN
1st Flight
During the flight the common booster core (CBC) strap-on boosters shut down 8 seconds early. Later in the flight the center core CBC shut down 9 seconds early due to faulty sensor readings indicating a depletion of the liquid oxygen. To compensate for the early shutdowns, the first burn of the second stage was extended. Due to the increased first burn, the third burn ended early due to depletion of the propellant, leaving the payload short of the intended orbit.
SOURCES:
https://www.space.com/879-problem-delta-4-heavy-launch-pinned.html
0.00
0.33
0.50
0.50
0.00
0.33
0.50
0.50
0.00
0.33
0.88
0.80
0.89
0.82
0.86
0.78
0.75
0.67
0.80
0.71
0.83
0.75
0.88
0.80
0.90
0.83
0.91
0.85
0.86
0.78
0.67
0.60
0.50
0.50
Realized Rate
Predicted Rate