DOW-UAP-D048, Department of the Air Force Report, 1996

The report describes the modeling of unlikely space-booster failures in risk calculations.

This report describes the Modeling of Unlikely Space-Booster Failures in Risk Calculations.

Mode-5 failure responses are much less likely to occur than those that result in impacts near the flight line.

Although Mode-5 failure responses are much less likely to occur than those that result in impacts near the flight line, risk-analysis studies are incomplete without them.

The report contains a listing and brief narrative failure history of the Atlas, Delta, and Titan missile and space-vehicle launches.

An appendix to the report contains a listing and brief narrative failure history of the Atlas, Delta, and Titan missile and space-vehicle launches.

The Mode-5 impact-density function was developed to reflect unlikely vehicle failures causing impacts uprange or away from the intended flight line.

The Mode-5 failure-response, theoretical though it is, was developed to reflect the facts that: (1) unlikely vehicle failures can cause impacts uprange or well away from the intended flight line.

RTI has been tasked to estimate the probabilities of occurrence of less-likely failures.

Consequently, RTI has been tasked to estimate the probabilities of occurrence of these less-likely failures.