Accession Number : AD0877179

Title :   Development of Unified Reliability Prediction Techniques for Flight-Control Systems.

Descriptive Note : Final rept. 15 Apr 69-28 Feb 70,

Corporate Author : BATTELLE MEMORIAL INST COLUMBUS OH COLUMBUS LABS

Personal Author(s) : Thatcher, R. K. ; Thomas, R. E. ; Easterday, J. L. ; Spradlin, B. C. ; Martin, P. T.

Report Date : JUN 1970

Pagination or Media Count : 156

Abstract : The Air Force Flight Dynamics Laboratory has been involved in the development of analytical techniques for the reliability prediction of flight control systems. Under the direction of the Air Force, these various techniques have been combined to form a unified analysis approach which can be efficiently and effectively utilized by the system design or reliability engineer. The resulting 'new' TAbular System Reliability Analysis, TASRA, utilizes the best features of the other approaches, and completely documents the analysis process. It is responsive to mission requirements, flight profiles, various design concepts, and many stages of design and hardware development. The analysis is capable of including electronic, electrical, mechanical, electromechanical, and hydraulic equipment. Both catastrophic and degradation data can be included in the analysis. TASRA can handle standby or repair conditions, and more than one failure mode simultaneously. Results include probability of failure, mean time to failure, and failure rates. The technique can be further developed to achieve greater capability and efficiency. (Author)

Descriptors :   (*FLIGHT CONTROL SYSTEMS, RELIABILITY), MATHEMATICAL PREDICTION, AVIATION SAFETY, FAILURE(MECHANICS).

Subject Categories : Aircraft
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE