Cargo Aircraft and Spacecraft Forward Restraint Criteria
Final rept. Jun 1976-Dec 1977
AERONAUTICAL SYSTEMS DIV WRIGHT-PATTERSON AFB OH
Pagination or Media Count:
This investigation was primarily conducted to review probability projections of crashes of Air Force cargo aircraft as developed in 1971. The 1971 effort resulted in considerable changes to the air cargo operations. This included a lowering of restraint criteria to 3Gs with an auxiliary 9G net system. The objective of this effort was to determine if further reductions could be made through removal of the auxiliary 9G net, in addition to both aircraft and spacecraft cargo restraint criteria. Restraint and aircraft modifications were also examined. This effort viewed probabilities, based on the original data from January 1960 to July 1971, and an expanded base to July 1976 for a total of 40.4 million hours. Further, the original study viewed only major accidents minor accidents have been added to this review. The probabilities developed in 1971 were conservative relative to actual occurrence over the past few years. Further, new probabilities were developed that show removal of the barrier net is feasible and appropriate changes are recommended to the current criteria. Commercial experience with barrier nets was also investigated and accidents where barriers were impacted are detailed.
- Unmanned Spacecraft