Documents / Report

Department of the Air Force Report, 1996

U.S. Department of War · 1996-09-10 · 181 pages · text from the file's own layer

This final report, dated September 10, 1996, was prepared by the Research Triangle Institute for the Department of the Air Force's 45th and 30th Space Wing safety offices. Titled Modeling Unlikely Space-Booster Failures in Risk Calculations, it shows how rare Mode-5 failures, in which a rocket veers well off its intended flight line, are modeled in the DAMP risk-analysis program. An appendix lists Atlas, Delta, Titan and Thor launch and failure histories through August 1996.

From the source:Release of 2026-05-08 Incident: 9/10/96, N/A. This report describes the Modeling of Unlikely Space-Booster Failures in Risk Calculations, documenting historical launch failure modes and recommending corrective actions to address them using novel modelling techniques.

Open the PDF at page 93 Original source ↗

“Mission Control”17 pages

  • p. 88 …Vehicle loses control at or shortly after liftoff, with all flight directions equally likely. Destruct is…
  • p. 106 …121 (8) Missiles/Space Vehicle Files, 45th Space Wing, Wing Safety, Mission Flight Control and Analysis…
  • p. 111 …Such behavior did not necessarily prevent the attainment of some, or even all, mission objectives. 50…
  • p. 131 …Due to excess speed, spacecraft passed 22,000 miles in front of moon, and primary mission…
  • p. 132 …Although Atlas performance was satisfactory, the mission was apparently a failure. No other data available. 134…
  • p. 133 …A flight-control malfunction occurred at about 15 seconds at the start of the pitch program…
  • p. 137 …Vehicle became unstable when B2 pitch control was lost at 121 seconds. Loss of pitch control…
  • p. 138 …The missile then lost attitude control, executing a hard yaw rate tum throughout and beyond the…
  • p. 139 …of the rate gyro or an electrical failure in the pitch channel of the flight control…
  • p. 140 caused yaw and roll rates that the flight control system could not correct. As a result…
  • p. 151 …Attitude control lost during second stage coast period. Third stage spun up, but did not fire…
  • p. 153 …One solid-rocket motor carried to MECO, but mission was still a complete success. 102. SMS…
  • p. 169 …Missile tumbled out of control at 130 seconds, then broke up. 104. IHA (65-210), 1…
  • p. 170 …Nominal mission through transtage second burn shutdown. Attitude control system engine failed to shutdown following vernier…
  • p. 171 …However, satellite propulsion system malfunctioned putting satellite in uncontrollable position with no possibility of restoring mission…
  • p. 172 …control until propellant depletion. Trajectory inaccuracies were compensated for during Stage-2 burn, and the mission…
  • p. 180 …Missiles/Space Vehicle Files, 45th Space Wing, Wing Safety, Mission Flight Control and Analysis (SEO), 1957…
Table 35. Effect on £-Ratio of Varving Mode-5 Constant 8 (A= 3) - Part 1
R=-1 nm R=5nm
180--(1) 8=500 8 = 1000 8=2000 8=500 8 = 1000 8 =2000
0 1.0 1.0 1.0 1.0 1.0 1.0
5 1.3 1.3 1.2 1.3 1.3 1.3
10 1.6 1.6 1.5 1.7 1.7 1.7
15 2.1 2.0 1.9 2.2 2.2 2.1
20 2.7 2.5 2.3 2.8 2.8 2.7
25 3.4 3.1 2.7 3.6 3.6 3.4
30 4.2 3.7 3.1 4.7 4.5 4.3
35 5.2 4.5 3.6 6.0 5.8 5.4
40 6.4 5.3 4.1 7.7 7.3 6.6
45 7.7 6.2 4.5 9.8 9.2 8.1
50 9.2 7.0 5.0 12.4 11.4 9.8
55 10.8 7.9 5.3 15.7 14.1 11.7
60 12.4 8.7 5.7 19.7 17.1 13.7
65 14.1 9.5 6.0 24.4 20.6 15.8
70 15.8 10.2 6.2 29.9 24.3 17.8
75 17.3 10.8 6.4 36.3 28.5 19.9
80 18.7 11.3 6.6 43.4 32.5 21.8
85 20.0 11.7 6.7 51.1 36.5 23.5
90 21.1 12.1 6.8 59.1 40.4 25.0
95 22.0 12.3 6.9 67.3 44.1 26.3
100 22.8 12.6 7.0 75.3 47.3 27.5
105 23.4 12.7 7.0 82.9 50.2 28.4
110 23.9 12.9 7.1 89.8 52.7 29.1
115 24.3 13.0 7.1 96.0 54.7 29.7
120 24.6 13.1 7.1 101.4 56.4 30.2
125 24.9 13.2 7.1 106.0 57.8 30.6
130 25.1 13.2 7.1 109.9 58.9 30.9
135 25.3 13.3 7.2 113.0 59.8 31.2
140 25.4 13.3 7.2 115.5 60.5 31.3
145 25.5 13.3 7.2 117.6 61.1 31.5
150 25.5 13.3 7.2 119.2 61.5 31.6
155 25.6 13.3 7.2 120.5 61.8 31.7
160 25.6 13.4 7.2 121.5 62.1 31.8
165 25.7 13.4 7.2 122.2 62.3 31.8
170 25.7 13:4 7.2 122.8 62.4 31.8
175 25.7 13.4 7.2 123.3 62.6 31.9
180 25.7 13.4 7.2 123.7 62.6 31.9
RTI9/10/96 84

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Report, from the pursue collection. The PDF is mirrored here; the original link is above. 181 pages are in the text index: search them above, or from the library's search.