Department of the Air Force Report, 1996

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for example, the risks are over 20 times as great if the vehicle's breakup qa is 20,000
rather than 5,000 deg-lb/ft2.
6.4 Shaping Constants for Titan IV
Mode-5 shaping constants for Titan IV were developed as described in Section 6.3 for
Delta, except that a total of 290,000 simulations were run between the programming
time of 18 seconds and staging at 300 seconds. The percentage of vehicles that break up
during simulated random-attitude turns are plotted against failure time in Figure 26.
The same qa's used with Atlas and Delta were used here, and similar breakup results
were obtained.
100
90
80
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~ 70
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Q) 60
e
a..
(l) 50
a.
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~ 40
Ill m 30
20
10
0
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■ n••••••• ■ nn 1••••••••••..•••••••~••nn+ ■ ••••••H ■■ !•••••nnH•••••••j••••••••••••••....t••••••
•
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0
40
80
120
160 200
240 280
Failure Time (sec)
Figure 26. Titan IV Breakup Percentages
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RTI