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Research & Technology 1996 Articles

Aerospace Technology

Materials
Advanced High-Temperature Engine Materials Technology Progresses
Natural Strain
BFS Method for Alloys Optimized and Verified for the Study of Ordered Intermetallic Materials
Orthorhombic Titanium Matrix Composite Subjected to Simulated Engine Mission Cycles
Development of Creep-Resistant NiAl(Ti,Hf) Single-Crystal Alloys
Oxygen Compatibility Screening Tests in Oxygen-Rich Combustion Environment
Alternative Processing Method Leads to Stronger Sapphire-Reinforced Alumina Composites
Single-Tow Minicomposite Test Used to Determine the Stressed-Oxidation Durability of SiC/SiC Composites
First Single-Crystal Mullite Fibers
Method for Efficient Joining of Silicon Carbide-Based Ceramic Materials Developed
Unique Tuft Test Facility Dramatically Reduces Brush Seal Development Costs
Ion Implantation of Perfluoropolyether-Lubricated Surfaces for Improved Tribological Performance
Test Method Designed to Evaluate Cylinder Liner-Piston Ring Coatings for Advanced Heat Engines
Compressor Case Manufactured Using High-Temperature Polyimides
An Oxidation-Resistant Coating Alloy for Gamma Titanium Aluminides
Environmental Studies on Titanium Aluminide Alloys
Volatile Reaction Products From Silicon-Based Ceramics in Combustion Environments Identified
Oxidation Resistance and Critical Sulfur Content of Single-Crystal Superalloys

Structures
Probabilistic Thermomechanical Fatigue of Polymer Matrix Composites
T/Best: Technology Benefit Estimator for Selecting Features and Applications
Effect of Cyclic Thermal Loads on Fatigue Reliability in Polymer Matrix Composites
ICAN Computer Code Adapted for Building Materials
Micromechanical Modeling Efforts for Advanced Composites
COMETBOARDS Can Optimize Performance of Wave-Rotor-Topped Gas Turbine Engine
Transient Finite Element Analyses Developed to Model Fan Containment Impact Events
High-Temperature Adhesive Strain Gage Developed
Novel Multidisciplinary Models Assess the Capabilities of Smart Structures to Manage Vibration, Sound, and Thermal Distortion in Aeropropulsion Components
EPM Structural Component Successfully Tested Under Pseudo-Operating Conditions
Retirement for Cause as an Alternate Means of Managing Component Lives
Model Determined for Predicting Fatigue Lives of Metal Matrix Composites Under Mean Stresses
Oxidation Embrittlement Observed in SiC/SiC Composites
TURBO-AE: An Aeroelastic Code for Propulsion Applications
Rotordynamics on the PC: Transient Analysis With ARDS
Space Mechanisms Lessons Learned and Accelerated Testing Studies
More-Electric Gas Turbine Engines
Measurement of Gust Response on a Turbine Cascade
Fan Blade Deflection Measurement and Analyses Correlation
Feasibility of Rope Seal Technology Demonstrated for an Industrial Application
X-Ray Computed Tomography Monitors Damage in Composites
Stress Intensity Factor Solutions for Multiple Edge Cracks In Ceramic Matrix Composites
Award-winning CARES/Life Ceramics Durability Evaluation Software Making Advanced Technology Accessible
Capability of Thermographic Imaging Defined for Detection in High-Temperature Composite Materials

Space Propulsion Technology
Rocket Engine Numerical Simulator (RENS)
Ablative Material Testing at Lewis Rocket Lab
Real-Time Sensor Validation System Developed for Reusable Launch Vehicle Testbed
Demonstration of Oxygen and Carbon Monoxide Propellants for Mars Missions
Metallized Gelled Propellant Heat Transfer Tests Analyzed
Fuels and Space Propellants for Reusable Launch Vehicles: A Small Business Innovation Research Topic and Its Commercial Vision
Electric Propulsion
On-Board Chemical Propulsion
Gas Wave Bearings for High-Speed Oil-Free Machines

Power Technology
SCARLET Photovoltaic Concentrator Array Selected for Flight Under NASA’s New Millennium Program
Thermophotovoltaic Cell Technology Transferred to the Department of Energy Laboratory and a Commercial Manufacturer
Balloon Fuel Cell Power System
Lithium Ion Batteries
High Capacity Battery Cell Flight Qualified
NASA Flywheel Program
Investigation of Teflon FEP Embrittlement on Spacecraft in Low-Earth Orbit
Cryogenic Electronics in Support of Deep-Space Missions
New Electromagnetic Interference Shielding Material Demonstrated
High-Temperature Passive Power Electronics
Protective Coating Enhances the Durability of Retroreflectors for the International Space Station

Space Electronics
High-Power, High-Temperature Superconductor Technology Development
Digital Audio Radio Field Tests
Lewis Investigates Frequency Sharing Between Future NASA Space Systems and Local Multipoint Distribution Systems in the 27-GHz Band
Computer Simulation of Microwave Devices
HTS/Ferroelectric Structures for Tunable Microwave Components
Miniaturized High-Temperature Superconducting/Dielectric Multilayer Filters for Satellite Communications
Root-Raised Cosine Filter Implementation That Uses Canonical Signed Digits for High-Speed Digital Filter Applications


Trade names or manufacturers' names are used in this report for identification only. This usage does not constitute an official endorsement, either expressed or implied, by the National Aeronautics and Space Administration.

Last updated May 1, 1997


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