Investigation of new contact systems for miniature high-frequency switches
Variation in transitional resistance of electric contacts as function of design, materials, current, and switching frequency - switching elements erosion
ELECTRIC CONTACT↗
SEARCH · Engineering Papers
Results for “Materials Design”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Flat conductor wiring systems for federal and commercial applications
Flat conductor wiring system design, materials, production, characteristics, and applications
FLAT LAYER↗
Rankine cycle test facility study - Technical data Final report
Vacuum environmental requirements, loop design, materials, and instrumentation for facility to be used for testing liquid metal Rankine cycle components
TEST FACILITY↗
Thermionic converters and generators for space application. I - Thermionic converter performance and material problems.
Improving thermionic power conversion devices through various material design configurations
THERMIONIC CONVERTER↗
Electronics parts engineering
Identification of designs, materials, and processes used in manufacturing of electronic equipment
ELECTRONIC EQUIPMENT↗
Development of glass passivation method for semiconductor devices for Saturn system Quarterly progress report, 28 Sep. 1966 - 28 Mar. 1967
Material, design, and manufacturing studies to improve glass passivation of semiconductor devices
GLASS COATING↗
Piezoelectric pressure transducer with acoustic absorbing rod.
Piezoelectric pressure transducer, discussing design, material used and performance
SIGNAL PROCESSING↗
Fatigue of structural materials suitable for the supersonic transport.
Supersonic transport structural materials design, considering fatigue behavior, crack propagation and residual static strength under temperature and cyclic load effects
STRUCTURAL DESIGN↗
Development of biaxial test fixture includes cryogenic application
Test fixture has the capability of producing biaxial stress fields in test specimens to the point of failure. It determines biaxial stress by dividing the applied load by the net cross section. With modification it can evaluate materials, design concepts, and production hardware at cryogenic temperatures.
Helf, J. C.↗
Improved ablative materials Final report
Improved ablative materials - design of chemical vapor plating reactor for preparing titanium boride and titanium carbide continuous filaments
Haefling, J. A.↗
Effects of some processing variables on dimensional stability.
Precision device dimensional stability and relaxation of residual stresses introduced during processing, noting design, material selection and material processing
Imgram, A. G.↗
High temperature ion source
Modified Nielsen-type ion source produces temperatures up to 1500 degrees C and permits obtaining a plasma from low vapor-pressure materials. Design minimizes thermal stresses. Dual-filament discharge chamber achieves the high temperature and provides independent control of the heating and electron emission functions.
Swift, R.↗
Nonmetallic-materials development for spacecraft applications
The development, characteristics, and applications of nonmetallic materials used for spacecraft structures are discussed. The effects of extremes in environment as a factor in material selection are considered. Material design parameters are especially complex because of the requirements imposed for additional fire safety and resistance to the free space and lunar surface environment.
Dawn, F. S.↗
Textile mechanical elements in aerospace vehicle parachute systems
Materials, design considerations, and design details for textile mechanical elements used in aerospace vehicle parachute systems are briefly reviewed. Friction burns are noted as a major cause of parachute system failures. The friction burn hazard can be minimized by designing for predeployment and deployment sequence control with textile mechanical restraints. Two basic restraint designs (restraint loops and line ties) are discussed and various applications of the designs shown.
Lindgren, M. J.↗
Filament-wound graphite/epoxy rocket motor case
The fabrication procedures are described for a filament-wound rocket motor case, approximately 56 cm long x 71 cm diameter, utilizing high tensile strength graphite fibers. The process utilized Fiberite Hy-E-1330B prepreg tape which consists of Courtaulds HTS fibers in a temperature-sensitive epoxy matrix. This fabrication effort, with resultant design, material and process recommendations, substantiates the manufacturing feasibility of graphite/epoxy rocket motor cases in the 56 cm x 71 cm size range.
Humphrey, W. D.↗
Survey of current component reliability problems and methods for prevention.
The current reliability problems related to electronic components and microcircuits are presented in this paper. Specific process controls, design, materials, application constraints, destructive testing, electrical tests, and procedures for implementation are recommended to improve the reliability of selected electronic components.
Hamiter, L.↗
Liquid and gaseous oxygen safety review
Materials used in oxygen systems and allowable oxygen environments are specified for each material. Design criteria, cleaning procedures and quality control methods are covered. Guidelines for protection against hazards involved with production, transportation, storage and use of oxygen are presented. Study also lists extensive references.
Lapin, A.↗
Space shuttle recommendations based on aircraft maintenance experience
Space shuttle design recommendations based on aircraft maintenance experience are developed. The recommendations are specifically applied to the landing gear system, nondestructive inspection techniques, hydraulic system design, materials and processes, and program support.
Spears, J. M.↗