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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.
“Mission Control”17 pages
6.5 Shaping Constants for LLV1 Shaping constants for LLVl were developed as described in Section 6.3 for Delta, except that a total of 290,000 simulations were made between the programming time of 1 second and staging at 290 seconds. The percentages of vehicles that break up during simulated random-attitude turns are plotted in Figure 29. As expected, the results are similar to those shown previously for Atlas, Delta, and Titan although, due to its higher acceleration, the rapid drop-off from near 100% breakup occurs at an earlier time for the LLVl than for the other vehicles. 100 90 80 -~ 70 e... -C: 60 ~Lo 50(I) a. a.:::::, 40.:.::: m 30 CD 20 10 0 --e----···········..............._..,.- ....., 1 I LLV11\ \ i . . .. ••••••••••••• ••••••..•\ ~•• •\••••..----.. ••••• ·. l .. •••••••••••••••••J................•••-}••••mum•m \ \ i ! ! ! ! • . \, l l q-~lpha in ~eg-lb!f( i 1, i r : i r ·······.....................H !................... 1..... -··_· ···········-· ~~::~~:!: 1~:g~g ___J ..1 1.......................... ----..q:-alpha =.20,00P.............. I ! ! 4 • 1 1 I --....... L.· ...................(...................J ....................;....................J................. ....•••••••••••• \··········....... 1 _!_.... _.....i................_J: __......__ --.;__ : 0 40 80 120 160 200 240 280 Failure Time (sec) Figure 29. LLVl Breakup Percentages 9/10/96 69 RTI L
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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.