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.

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from the Western Range were not included since available performance records were
incomplete. The results for the four vehicles are combined in Table 11. Table 12 gives
last-occurrence dates by' response mode for each launch vehicle.
Table 7. Number of Atlas Failures - All Confisrurations (532 Flights)
Flight Failure-Res :,onse Mode 3&4
Phase 1 2 3 4 5 'NA' Tumble
0 0 0 0 0 0 0 0
0-1 7 1 2 38 8 4 11
0-2 7 1 2 66 15 13 19
0-3 7 1 2 86 15 18 25
0-4 7 1 2 89 15 21 27
0-5 7 1 2 89 15 23 27
Table 8. Number of Delta Failures - All Configurations (232 Flights)
Flight Failure-Res oonse Mode 3&4
Phase 1 2 4 5 'NA' Tumble3
0 0 0 00 0 0 0
·20-1 0 0 2 5 00
0-2 0 0 4 2 10 10
0-3 0 0 0 7 3 12 1
130-4 0 0 0 7 3 1
17 3 150-5 0 0 0
Table 9. Number of Titan Failures - All Configurations (337 Flights)
Flight
Phase 1
Fail
2
ure-Res
3 4
oonse Mode
5 'NA'
3&4
Tumble
0 0 0 0 3 0 0 1
0-1 2 2 0 13 1 0 5
0-2 2 2 0 39 5 3 10
0-3 2 2 0 46 5 5 11
0-4 2 2 0 47 5 7 11
0-5 2 2 0 47 5 10 11
Table 10. Number of Eastern-Range Thor Failures (85 Flights)
Flight Failure-Res oonse Mode 3&4
TumblePhase 1 2 3 4 5 'NA'
0
0-1
0-2
0-3
0-4
0-5
0
4
4
4
4
4
0 0 0 0
1 1 15 4
1 1 20 5
1 1 22 5
1 1 22 5
1 1 22 5
0
1
3
3
4
5
0
3
3
3
3
3
9/10/% 25 RTI

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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.