RESEARCH AND INVESTIGATION OF ANALYTICAL TECHNIQUES FOR PREDICTING RELIABILITY OF FLIGHT CONTROL SYSTEMS AND COMPONENTS.
Abstract
Previous reliability research efforts by Battelle developed an analytical technique called the Moment method for predicting drift-type failures of components and systems, and applied this technique to a number of components and subsystems. This report presents an extension of the Moment method which permits it to handle systems whose performance characteristics are related to part parameters by non-linear transfer functions, and whose part parameters have non-normal distributions. Bellows seals for a liquid-metal servoactuating subsystem were analyzed and their fatigue life was estimated. Portions of a servovalve for the same subsystem were simulated physically and subjected to operation at elevated temperature and pressure to establish wear data for possible future use in a Moment method analysis. Six rate gyros were tested and modeled, and the Moment method applied to the results. Critical parameters affecting gyro sensitivity and damping factor were established. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1968
- Accession Number
- AD0828323
Entities
People
- C. G. Kopp
- J. B. Wertz
- J. V. Baum
- R. J. Conlon
Organizations
- Battelle Memorial Institute