Accession Number:

AD0488151

Title:

STUDY OF APPLICATION OF RELIABILITY PREDICTION TECHNIQUES ON FLIGHT CONTROL COMPONENTS

Descriptive Note:

Technical rept. 15 Mar 1964-30 Jun 1965

Corporate Author:

BATTELLE MEMORIAL INST COLUMBUS OH

Personal Author(s):

• Wertz, J. B.
• Goldgraben, J. R.
• Hassfurther, M. E.
• Baum, J. V.
• Easterday, J. L.

Report Date:

1966-05-01

Pagination or Media Count:

148.0

Abstract:

A previous reliability research effort generated an analytical technique called the Moment method for predicting drift-type failures in components and systems. This technique is based on the Propagation of Variance formula, which combines data derived from the system, or system model, and formula, which combines data derived from the system, or system model, and parameter tolerance data, to formulate an estimate of the probability that the system will perform within specifications at the initial or some future time of operation. A discussion is presented on the application of the reliability-prediction technique to a momentum-exchange-type attitude control and stabilization subsystem for a satellite, a liquid-metal servo actuating subsystem, and an electrohydraulic servo valve. A mathematical model was analysis of the expected system degradation over time was made, and a prediction of efficiency and reliability is presented.

Descriptors:

• *ATTITUDE CONTROL SYSTEMS
• *FLIGHT CONTROL SYSTEMS
• MATHEMATICAL MODELS
• PROBABILITY
• ANALYSIS OF VARIANCE
• RELIABILITY
• MATHEMATICAL PREDICTION
• SPACECRAFT COMPONENTS
• CIRCUITS
• SATELLITE ATTITUDE
• ELECTROMAGNETIC PUMPS
• STABILIZATION SYSTEMS
• ANALOG COMPUTERS
• HYDRAULIC SERVOMECHANISMS
• LIQUID METAL PUMPS
• LIQUID METAL VALVES

Subject Categories:

• Aircraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE