Materials
Assessing the Resistance of
g-Ti-47Al-2Nb-2Cr (at.%) to Foreign Object Damage
Strengthening Precipitate Morphologies
Fully Quantified in Advanced Disk Superalloys
High-Temperature Compressor
Material Development
Method Developed for the
High-Temperature Nondestructive Evaluation of Fiber-Reinforced
Silicon Carbide Ceramic Matrix Composites
Interfacial Thickness Guidelines
for SiCFiber/SiCMatrix Composites
Stable Boron Nitride Interphases
for Ceramic Matrix Composites
Cyclic Fiber Push-In
Test Monitors Evolution of Interfacial Behavior
in Ceramic Matrix Composites
Tribometer for
Lubrication Studies in Vacuum
Computational Chemistry
and Lubrication
"Green"
High-Temperature Polymers
Low-Cost Manufacturing
of High-Temperature Polymer Composites
Residual Stresses
Modeled in Thermal Barrier Coatings
Oxidation of Boron
Nitride in Composites
Carbon-13 Labeling Used to
Probe Cure and Degradation Reactions of High-Temperature Polymers
Thermal High- and Low-Cycle
Fatigue Behavior of Thick Thermal Barrier Coating Systems
Power and On-Board Propulsion Technology
Wheel Abrasion Experiment
Conducted on Mars
Results From Mars Show Electrostatic
Charging of the Mars Pathfinder Sojourner Rover
Measuring Dust on Mars
Lightweight Nickel Electrode Development
Program
Systems Analysis in Support of the
NASA Fuel Cell Upgrade Program for the Space Shuttle Orbiter
Bipolar Nickel-Metal Hydride Battery
Being Developed
Electrolysis Propulsion Provides
High-Performance, Inexpensive, Clean Spacecraft Propulsion
"Green" Monopropellant
Developed for Spacecraft
Power Management and Distribution
System Developed for Thermionic Power Converters
Advanced Electric Distribution,
Switching, and Conversion Technology for Power Control
Soft X-Ray Exposure Testing of
FEP Teflon for the Hubble Space Telescope
Evaluation of Low-Earth-Orbit
Environmental Effects on International Space Station Thermal
Control Materials
Integrated Solar Upper
Stage Technical Support
High-Voltage 1-kW dc/dc
Converter Developed for Low-Temperature Operation
Atomic Oxygen Cleaning
Shown to Remove Organic Contaminants at Atmospheric Pressure
Refractive Secondary Solar
Concentrator Being Designed and Developed
Aerospace Power Systems
Design and Analysis (APSDA) Tool
Instrumentation and Controls
Drag Force Anemometer Used
in Supersonic Flow
Attachment of Free Filament Thermocouples
for Temperature Measurements on Ceramic Matrix Composites
Silicon Carbide Mixers Demonstrated
to Improve the Interference Immunity of Radio-Based Aircraft Avionics
Silicon Carbide Junction Field
Effect Transistor Digital Logic Gates Demonstrated at 600 °C
Chemical Mechanical Polishing of
Silicon Carbide
Model-Trained Neural Networks and
Electronic Holography Demonstrated to Detect Damage in Blades
Particle Imaging Velocimetry Used
in a Transonic Compressor Facility
Jet Injection Used to Control
Rotating Stall in a High-Speed Compressor
Distortion Tolerant Control Demonstrated
in Flight
Active Pattern Factor Control for Gas
Turbine Engines
Real-Time Sensor Validation
System Developed
Communications Technology
Asynchronous Transfer Mode
Quality-of-Service Testing
Satellite-Terrestrial Network
Interoperability
High-Temperature Superconducting/Ferroelectric,
Tunable, Thin-Film Microwave Components
Reflectarray Demonstrated to Transform
Spherical Waves Into Plane Waves
Turbomachinery and Propulsion Systems
Wave Rotor Research and
Technology Development
Low-Pressure Turbine Flow
Physics Program
LSPRAY: Lagrangian Spray
Solver for Applications With Parallel Computing and
Unstructured Gas-Phase Flow Solvers
EUPDF: Eulerian Monte Carlo
Probability Density Function Solver for Applications
With Parallel Computing, Unstructured Grids, and Sprays
Three-Dimensional Measurements
of Fuel Distribution in High-Pressure, High-Temperature,
Next-Generation Aviation Gas Turbine Combustors
Mixing of Multiple Jets With
a Confined Subsonic Crossflow
Advanced Subsonic Combustion Rig
Time-Resolved Optical Measurements of
Fuel-Air Mixedness in
Windowless
High Speed Research Combustors
Advanced Fuels Can Reduce the
Cost of Getting Into Space
Metallized Gelled Propellants:
Heat Transfer of a Rocket Engine Fueled by Oxygen/RP-1/Aluminum Was
Measured by a Calorimeter
F100 Engine Emissions Tested in NASA Lewis'
Propulsion System Laboratory
Microblowing Technique Demonstrated to
Reduce Skin Friction
Effect of Installation of Mixer/Ejector
Nozzles on the Core Flow Exhaust of High-Bypass-Ratio Turbofan Engines
Forebody/Inlet of Joint Strike Fighter
Tested at Low Speeds
Lift Fan Nozzle for Joint Strike Fighter
Tested in NASA Lewis' Powered Lift Rig
New Nozzle Test Rig Developed
Resonance of Twin Jet Plumes Studied
Design Concepts Studied for the Hydrogen
On-Orbit Storage and Supply Experiment
Vented Tank Resupply Experiment
Demonstrated Vane Propellant Management Device for Fluid Transfer
Recent Advancements in Propellant
Densification
Parametric Study Conducted of
Rocket-Based, Combined-Cycle Nozzles
Structures and Acoustics
Design Process for High Speed
Civil Transport Aircraft Improved by Neural Network and
Regression Methods
Thermal Effects Modeling Developed
for Smart Structures
Procedure Developed for Ballistic
Impact Testing of Composite Fan Containment Concepts
Mechanical Characterization of
the Thermomechanical Matrix Residual Stresses Incurred
During MMC Processing
Test Standard Developed for
Determining the Slow Crack Growth of Advanced Ceramics
at Ambient Temperature
Accelerated Testing Methodology
Developed for Determining the Slow Crack Growth of Advanced
Ceramics
Constitutive Theory Developed
for Monolithics Ceramic Materials
Noncontact Determination of
Antisymmetric Plate Wave Velocity in Ceramic Matrix Composites
Experimental Techniques Verified for
Determining Yield and Flow Surfaces
Cares/
Life
Ceramics Durability
Evaluation Software Used for Mars Microprobe Aeroshell
Continuum Damage Mechanics
Used to Predict the Creep Life of Monolithic Ceramics
Single-Transducer, Ultrasonic
Imaging Method for High-Temperature Structural Materials
Eliminates the Effect of Thickness Variation in the Image
Neural Network Control of a
Magnetically Suspended Rotor System
Feasibility of Using Neural
Network Models to Accelerate the Testing of Mechanical Systems
Magnetic Suspension for Dynamic
Spin Rig
High-Temperature Magnetic Bearings
Being Developed for Gas Turbine Engines
Integrated Fiber-Optic Light Probe:
Measurement of Static Deflections in Rotating Turbomachinery
Damping Experiment of Spinning
Composite Plates With Embedded Viscoelastic Material
Lewis-Developed Seal Is a Key
Technology for High-Performance Engines
Last updated April 14, 1998, by Nancy.L.Obryan@nasa.gov
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