Accession Number:

AD0610736

Title:

CIRCUIT MTTR AS A FUNCTION OF DESIGN.

Descriptive Note:

Final rept. for 19 Mar 63-30 Jun 64,

Corporate Author:

VITRO LABS SILVER SPRING MD

Personal Author(s):

• Stokes,Ralph G.

Report Date:

1964-12-01

Pagination or Media Count:

84.0

Abstract:

The purpose of this study was to refine the maintainability prediction technique developed by the Rome Air Development Center and to provide criteria to guide design for high maintainability at circuit level. The influence of pertinent design features was to be studied and relationships between maintainability and circuit design was to be given in terms of mean-time-to-repair MTTR. These MTTR terms were to be presented in such a manner as to permit quantitative prediction of maintainability for any circuit configuration of any circuit studied. The program objectives were successfully achieved through analysis of BuShips Form 10550-1, FailureReplacement Reports. Results of the program included 53 numerical values of MTTR as related to eight design variables. A procedure was developed using the above results to estimate the expected maintainability for any combination of the eight design variables for any circuit function in any equipment type. Author

Descriptors:

• *CIRCUITS
• MAINTAINABILITY
• ELECTRONIC EQUIPMENT
• MAINTAINABILITY
• RELIABILITY(ELECTRONICS)
• MILITARY REQUIREMENTS
• MAINTENANCE
• STATISTICAL ANALYSIS
• STATISTICAL DISTRIBUTIONS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE