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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.
“Titan II”13 pages
6.3 Shaping Constants for Delta-GEM Although less extensive, the computations made and graphs plotted to establish Mode- s shaping constants for Delta parallel those described in Section 6.2 for Atlas HAS. The approach may be summarized as follows: (1) Calculate impact points from 10,000 simulated random-attitude turns made at 10- second intervals from programming time at 6 seconds until staging at 270 seconds (260,000 simulations total). The impact points from these turns, which produce impact results similar to slow turns, are assumed to be representative of the totality of Mode-5 impacts. (2) Determine the percentages of impacts in 5° sectors from 0° to 180°. (3) For assumed values of A and B, compute the percentages of impacts in the same 5° sectors from the theoretical Mode-5 impact-densityiunction. (4) By trial and error, find values of A and B that provide a best fit between the simulated and theoretical impact data. 9/10/96 60 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.