Impact of Dynamic Reliability on Airborne ASW Search: A General Approach and a Case Study of the P-3C.
Abstract
This study examines the impact of catastrophic and degradative equipment failures on systems effectiveness, using the P-3C aircraft as an example. The methods are generally applicable to systems having many independent sensors and weapons where the loss of any particular equipment does not necessarily reduce system effectiveness to zero. The major problem in assessing the impact of equipment failure results from the fact that an ASW mission has a complex time history. detection, localization and attack may occur at virtually any time throughout the mission. Therefore the timing of equipment failures is important, since an early failure of a critical sensor causes a much greater reduction in effectiveness than a late one. A series of simplied models are developed to illustrate the time-dependent effects of failure. Using these models with actual failure data for the P-3C, results suggest that current reliability experience reduces potential system effectiveness on the order of 25% or less. A new approach to the problem of estimating failure effects is attempted. The fractional cost concept yields a precise measure of the importance of each equipment to mission success.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 14, 1972
- Accession Number
- AD0894745
Entities
People
- Alan Davies
- Rodger Poore
Organizations
- TASC, Inc