Software Applications
Much of the research effort at NASA GRC focuses on developing computer software that incorporates new material characteristics into modeling codes for use in the design of new or improved products. Using modeling codes speeds up the design process, especially for very complex items such as advanced aircraft and space vehicles. Other codes interpret the data from advanced sensors for engine health monitoring, flow visualization, and intelligent controls.
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Technologies Available for Licensing
Generally NASA GRC does not patent software, but makes it available via software use agreements. For a list of all available software please see our Software Repository (link opens new browser window).
| Title |
Description/Abstract |
| System for controlling a magnetically levitated rotor | + Go to full description
+ Show/Hide SummaryResearchers at NASA Glenn Research Center (GRC) have patented a software-implemented system for dynamic stabilization control of a magnetically supported rotor to attain higher rotational speeds than possible with conventional bearings. The system optimizes performance through the introduction of correcting counter-perturbations in the magnetic field and makes off-axis operation possible. The software may be executed on a general- or specific-purpose computer and includes routines for implementing the desired operation. | | Optimization of Training Sets for Neural-Net Processing of Characteristic Patterns from Vibrating Solids | + Go to full description
+ Show/Hide SummaryResearchers at NASA Glenn Research Center (GRC) have patented an artificial feed-forward neural network that improves on existing damage detection capabilities by training the feed-forward network to associate each class of vibration into a characteristic pattern, such as a vibration at low, normal, and resonant modes. This method generates a pattern of the sampled solid visualized through electronic or television holography. Using a folding technique, structural damage can be detected from the vibration mode shapes. The feed-forward neural network has the optimal ability to learn and differentiate between speckled characteristic fringe patterns of vibrating solids, and then sub-sample the data into a folding routine repeatedly, creating a test set of records. Current feed-forward networks are either unable to learn the training sets demonstrated by this new invention, or suffer from over-training and do not achieve the desired sensitivity for non-destructive evaluation procedures for vibrating solids. This new feed-forward network has maximized sensitivity and ability to learn patterns (unlike existing networks) to obtain non-destructive evaluation of vibrating structures and their corresponding characteristic patterns. | | Software for System for Controlling A Magnetically Levitated Rotor | + Go to full description
+ Show/Hide SummaryResearchers at NASA Glenn Research Center (GRC) have patented a software-implemented system for testing the movement of a magnetically levitated rotor. Certain disturbances imposed on a rotor’s movement can limit its rotational speed and reduce the operating life of its components. This system uses software controls to introduce a wide variety of disturbances to the rotor to investigate the performance of the rotor under different conditions. In addition, the rotor assembly is suspended by magnetic bearings, allowing it to attain higher speeds without the stress of rotation-dependent vibrations and fatigue that limit the operational speed and life of traditional ball bearings. The system can be used as a static or dynamic test bed of disturbances at higher speeds for rotating components used in turbomachinery. |
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Partnership Opportunities
 | The Optimal Trajectories by Implicit Simulation program version 4 (OTIS 4) simulates the trajectory performance of a wide variety of vehicles. Primarily a point mass, three-degree-of-freedom (3DOF) simulation program, OTIS 4 has options that allow six-degree-of-freedom (6DOF) simulations. The user inputs the vehicle models; there are no embedded, vehicle-specific aerodynamic or propulsion models. Flight paths can be generated with respect to any of the major bodies in the solar system. OTIS 4 allows progressively more detailed simulations as the vehicle and mission design advance. |
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Relevant SBIR/STTR Opportunities
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| Recent Activities and Articles
R&T REPORT 2007
+ Download complete 2007 R&T Report
- New Automated Data-Post-Processing Program Created for Statistical Analyses of Multiscalar, Single-Shot Raman-Scattering Measurements of Turbulent Flames
- Outer Planet Mining Atmospheric Cruiser Systems Analyzed
- Three-Dimensional Monte Carlo Model Developed for Optical Mass Gauging
- Microvascular Pathologies in Human Retinal Disease Analyzed by VESGEN Software
- Simulation Developed That Captures the Thermoacoustic Instability of Advanced, Low-Emissions Combustor Prototype
- Integrated Online and Offline Diagnostic Approach Demonstrated for Aircraft Engine Application
- Loop-Shaping Design Approach Eith Practical Considerations Developed for Feedback Control Ststems
- Singular-Value Decomposition-Based Approach Developed for Thrust Estimation Over the Flight Envelope
- Transient Simulation of Large Commercial Turbofan Engine Developed To Enable Advanced Controls and Diagnostics Research
- Development of Analytical Criteria for Crack Deflection and Penetration in Coated Ceramics Initiated
- Probabilistic Simulation for Nanocomposite Characterization Developed and Included in the Computer Code ICAN/JAVA
- Formal Methodology Developed for Probabilistically Evaluating the Design of Composite Structures
- Micromechanics Model Developed for External Tank Spray-On Foam Insulation
- Effects of Cracks and Residual Stresses at the Toe of the Ares 1-X Upper Stage Simulator Shell-to-Flange Weld Quantified Using Probabilistic Approaches and the NASGRO Crack-Growth Code
- Probabilistic Analysis Conducted of Space Shuttle Body Flap Actuator Ball Bearings
- Fatigue Crack Growth Behavior Evaluated for Grainex Mar-M 247 Used in NASA’s High-Temperature, High-Speed Turbine Seal Test Rig
- Full-Rotor Aeroelastic Analysis Capability Developed and Tested
- Wind-US Code Improved for Hypersonic Flow Simulations
NASA Tech Briefs
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| Additional Related Resources
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| Success & Recognition
SUCCESS STORIES
None at this time.
AWARDS
R&D 100 Awards
- NESSUS V8 Probabilistic Engineering Analysis Software — 2005
- MASS Software — 2003
- Pilot Weather Advisor/InFlight w/ViGYAN — 2003
NASA Space Act Awards
- A Singular Value Decomposition-Based Method for Optimal Estimation of urbofan Engine Thrust and Other Parameters — 2007
- Weather Information Communication for General Aviation and Regional Aircraft (WINCOMM) — 2006
- ESCORT-D — 2004
Software of the Year
- SPACE – 2003 runner-up
- Microgravity Analysis Software System (MASS) – 2002 runner-up
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