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Research and Technology

Instrumentation and Controls

Low-Speed Active Flow Control Laboratory Developed

Intelligent Life-Extending Controls for Aircraft Engines Studied

Enhanced Bank of Kalman Filters Developed and Demonstrated for In-Flight Aircraft Engine Sensor Fault Diagnostics

Innovative Adaptive Control Method Demonstrated for Active Suppression of Instabilities in Engine Combustors

Discrete Event Supervisory Control Applied to Propulsion Systems

Control Algorithms and Simulated Environment Developed and Tested for Multiagent Robotics for Autonomous Inspection of Propulsion Systems

Nanorod Material Development for Use as an Optical Sensor Platform

Forward Technology Solar Cell Experiment (FTSCE) for MISSE-5 Verified and Readied for Flight on STS-114

Quantum Sensing and Communications Being Developed for Nanotechnology

Nondestructive Evaluation Tests Performed on Space Shuttle Leading-Edge Materials Subjected to Impact

Molecular Rayleigh Scattering Techniques Developed for Measuring Gas Flow Velocity, Density, Temperature, and Turbulence

Megahertz Frame-Rate Imaging System Developed for Quantitative Velocimetry Measuremetns in Unsteady High-Speed Flows

Ultrasonic Guided-Wave-Scan System Used to Characterize C-Enhanced Silicon Carbide Composite During Creep-Rupture Tests

Ability of Impedance-Based Health Monitoring To Detect Structural Damage of Propulsion System Components Assessed

Optical Tweezers and Optical Trapping Improved for Future Automated Micromanipulation and Characterization

New Deep Reactive Ion Etching Process Developed for the Microfabrication of Silicon Carbide

High-Temperature, Thin-Film Ceramic Thermocouples Developed

Sonoluminescence: A Galaxy of Nanostars Created in a Beaker

Materials

As-Fabricated Reinforced Carbon/Carbon Characterized

Followup to Columbia Investigation: Reinforced Carbon/Carbon From the Breach Location in the Wing Leading Edge Studied

Flexible Metallic Overwrap Concept Developed for On-Orbit Repair of Space Shuttle Orbiter Leading Edges

Glenn Refractory Adhesive for Bonding and Exterior Repair (GRABER) Developed for Repairing Shuttle Damage

Properties of PMR Polyimides Improved by Preparation of Polyhedral Oligomeric Silsesquioxane (POSS) Nanocomposites

Nonhumidified High-Temperature Membranes Developed for Proton Exchange Membrane Fuel Cells

Fluorescent “On-Off” Sensors Studied for Chemical Warfare Agents

Mechanical and Electrical Properties of a Polyimide Film Significantly Enhanced by the Addition of Single-Wall Carbon Nanotubes

Novel Elastomeric Membranes Developed for Polymer Electrolytes in Lithium Batteries

High-Temperature Polymer Composites Tested for Hypersonic Rocket Combustor Backup Structure

Mechanically Strong, Lightweight Porous Materials Developed (X-Aerogels)

Effects of High-Temperature Exposures on Fatigue life of Disk Superalloys Examined

Potential High-Temperature Shape-Memory Alloy Actuator Material identified

Processing of Ni30Pt20Ti50 High-Temperature Shape-Memory Alloy Into Thin Rod Demonstrated

Candidate Materials Evaluated for a High-Temperature Stirling Convertor Heater Head

Full-Scale GRCop-84 Combustion Chamber Liner Preform Fabricated Successfully

Quick Access Rocket Exhaust Rig Testing of Coated GRCop-84 Sheets Used to Aid Coating Selection for Reusable Launch Vehicles

Thermodynamics of Volatile Species in the Silicon-Oxygen-Hydrogen System Studied

Very Tough, Erosion-Resistant Turbine Airfoil Thermal Barrier Coatings Developed

Low-Thermal-Conductivity Pyrochlore Oxide Materials Developed for Advanced Thermal Barrier Coatings

Strong, Tough Glass Composites Developed for Solid Oxide Fuel Cell Seals

Process Developed for Generating Ceramic Interconnects With Low Sintering Temperatures for Solid Oxide Fuel Cells

Process Developed for Fabricating Engineered Pore Structures for High-Fuel-Utilization Solid Oxide Fuel Cells

Cooled Ceramic Matrix Composite Propulsion Structures Demonstrated

Permeability of Candidate Stirling Heater Head Materials Measured

SiC/SiC Ceramic Matrix Composites Developed for High-Temperature Space Transportation Applications

High-Temperature Piezoelectric Ceramic Developed

Structures Self-Assembled Through Directional Solidification

High-Temperature Proton-Conducting Ceramics Developed

Power and Electrical Propulsion

Proton-Exchange-Membrane Fuel Cell Powerplants Developed and Tested for Exploration Missions

Lithium-Ion Batteries Being Evaluated for Low-Earth-Orbit Applications

Lithium-Ion Cell Charge-Control Unit Developed

Integrated Power and Attitude Control System Demonstrated With Flywheels G2 and D1

Testing Done for Lorentz Force Accelerators and Electrodeless Propulsion Technology Development

Advanced Controller Developed for the Free-Piston Stirling Convertor

Brayton-Ion Power-Conversion Unit Tested With Ion Thruster

Closed-Cycle Engine Program Used to Study Brayton Power Conversion

Stirling Convertor System Dynamic Model Developed

Stirling Power Convertors Demonstrated in Extended Operation

Reliability of the SRG 110 Stirling Convertor Quantified

Work Began on Contracts for Radioisotope Power Conversion Technology Research and Development

Low-Temperature Chalcopyrite Thin-Film Solar Cells Developed for Space Photovoltaic Applications

Ground-Laboratory to In-Space Effective Atomic-Oxygen Fluence Determined for DC93–500 Silicone

Vacuum Ultraviolet Radiation Effects of DC93–500 Silicone Film Studied

Conductive Composites Made Less Expensively

Concept Developed for an Implanted Stimulated Muscle-Powered Piezoelectric Generator

Ozone Exposure System Designed and Used to Test High-Altitude Airship Materials

Microsystem Cooler Developed and Being Fabricated

Reliability of Electronics for Cryogenic Space Applications Being Assessed

Structures

Structural Benchmark Tests of Composite Combustion Chamber Support Completed

Benchmark Calibration Tests Completed for Stirling Convertor Heater Head Life Assessment

Titanium Aluminide Scramjet Inlet Flap Subelement Benchmark Tested

Stainless-Steel-Foam Structures Evaluated for Fan and Rotor Blades

Integrity of Polymethylmethacrylate (PMMA) Chemically Welded Joints Examined

Life Predicted in a Probabilistic Design Space for Brittle Materials With Transient Loads

Liquid-Hydrogen-Cooled 450-hp Electric Motor Test Stand Being Developed

Ironless High-Power-Density Permanent Magnet Electric Motors Designed for Emissionless Aircraft Propulsion

High-Temperature (1000 °F) Magnetic Thrust Bearing Test Rig Completed and Operational

G2 Flywheel Module Operated at 41,000 rpm

Fuel-Cell-Powered Electric Motor Drive Analyzed for a Large Airplane

Damage-Tolerant, Affordable Composite Engine Cases Designed and Fabricated

Prototype Variable-Area Exhaust Nozzle Designed

Switched-Reluctance Cryogenic Motor Tested and Upgraded

Analytical Micromechanics Modeling Technique Developed for Ceramic Matrix Composites Analysis

Design Sensitivity for a Subsonic Aircraft Predicted by Neural Network and Regression Models

Advanced Vibration Analysis Tool Developed for Robust Engine Rotor Designs

System Developed for Real-Time Blade-Flutter Monitoring in the Wind Tunnel

Power Requirements Determined for High-Power-Density Electric Motors for Electric Aircraft Propulsion

Flutter Stability Verified for Trailing Edge Blowing Fan

Fundamental Mistuning Model for Probabilistic Analysis Studied Experimentally

NESTEM Probabilistic Analysis Used to Study Mistuned Bladed Disks and Blisks With Aerodynamic and Structural Coupling

Primal and Dual Integrated Force Methods Used for Stochastic Analysis

Spur Gear Wear Investigated in Support of Space Shuttle Return-To-Flight Efforts

High-Temperature Knitted Spring Tubes Improved for Structural Seal Applications

Advanced Ceramic Wafer Seals Demonstrated at 2000 °F

Software Developed for Analyzing High-Speed Rolling-Element Bearings

Oxide Ceramic Films Grown on 60 Nitinol for NASA and Department of Defense Applications

Ambient Pressure Test Rig Developed for Testing Oil-Free Bearings in Alternate Gases and Variable Pressures

Tribological Behavior of Nano-Onions in Krytox 143AB Evaluated

Journal Bearing Analysis Suite Released for Planetary Gear System Evaluation

Propulsion Systems

Benchmark Problems Used to Assess Computational Aeroacoustics Codes

Turbofan Noise Reduction Associated With Increased Bypass Nozzle Flow

National Combustion Code Used to Study the Hydrogen Injector Design for Gas Turbines

Transferable Calibration Standard Developed for Quantitative Raman Scattering Diagnostics in High-Pressure Flames

Emissions Measured in the Exhaust of a CFM–56 Engine on a DC–8

Adaptive Technologies Developed and Demonstrated for Extending the Stable Operating Range of Compressors

SmaggIce 2D Version 1.8: Software Toolkit Developed for Aerodynamic Simulation Over Iced Airfoils

Piloted Flight Simulator Developed for Icing Effects Training

Subsonic Scarf Inlets Investigated

Parametric Inlet Tested in Glenn’s 10- by 10-Foot Supersonic Wind Tunnel

Wind-US 1.0 Released by NPARC Alliance

Directional Attenuation of Jet Noise With Eccentric Coannular Nozzle Investigated

Pressure Control for Low Earth Orbit Investigated

Synthetic Vortex Generator Jets Used to Control Separation on Low-Pressure Turbine Airfoils

Object-Oriented Version of Glenn-HT Code Released: Glenn-HT2000

Microgravity

New Species of Fire Discovered: Fingering Flamelets Form a Dynamic Population

Soldering Tested in Reduced Gravity

Flow-Boiling Critical Heat Flux Experiments Performed in Reduced Gravity

Condensing Heat Exchanger Concept Developed for Space Systems

Binary Colloidal Alloy Test–3 (BCAT–3) Tabletop Space Station Experiment Continues

Two-Phase Flow Technology Developed and Demonstrated for the Vision for Exploration


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Last updated: July 8, 2005


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