{"project":{"acronym":"","projectId":9861,"title":"On-Line Flutter Prediction Tool for Wind Tunnel Flutter Testing using Parameter Varying Estimation Methodology","primaryTaxonomyNodes":[{"taxonomyNodeId":10949,"taxonomyRootId":8816,"parentNodeId":10946,"level":3,"code":"TX15.1.3","title":"Aeroelasticity","definition":"Aeroelasticity is the coupled interaction of vehicle aerodynamics with vehicle structures and control systems, including static aeroelastic deformation, flutter, buffet, control surface buzz, aeroservoelasticity, and limit cycle oscillations.","exampleTechnologies":"Computational aeroelastic tools coupling Computational Fluid Dynamics (CFD) with structural dynamics methodologies to predict flutter, buffet, limit cycle oscillations and aeroservoelastic interactions; advanced unsteady CFD techniques to predict nonlinear fluctuating pressure fields for launch vehicle and aircraft buffet, control surface buzz and other nonlinear aero structural interactions; advanced ground test techniques and strategies to simulate and predict the performance of coupled aero/structural systems as well as complex unsteady flows and loads; advanced aircraft systems such as truss-braced wing and other concepts based on high aspect ratio wing configurations enabled by advanced static and dynamic aeroelastic prediction methodology; active flutter suppression; aeroelastic tailoring; active static/buffet/gust load alleviation","hasChildren":false,"hasInteriorContent":true}],"startTrl":5,"currentTrl":7,"endTrl":7,"benefits":"The potential non-NASA customers for this tool include the R & D arms of USAF, Navy, Army, and the defense industry complex. It can be readily adapted by a wide class of aerospace vehicles ranging from current to next-generation designs such as: (a) USAF's F-22 and F-35 aircrafts at Edwards AFB, (b) UASF's Hilda and/or sensorcraft aircrafts, (c) USAF's next generation stealth and morphing UAV/UCAV, (d) DARPA's new Switchblade Flying Wing Program, and for (e) Micro Air Vehicle (MAV) with enhanced control/maneuver capability.
Comprehensive flutter prediction software is still non-existing; leading to cautious and expensive flight/wind tunnel flutter test programs. ZONA envisions that the proposed Phase II research effort will result in a commercial product, called the PVE Toolbox. The PVE Toolbox will be a crucial technology for the flight flutter test of the next generation aircraft such as the NASA Hybrid Wind Body Configuration and Quiet Supersonic Transport.","description":"ZONA Technology, Inc. (ZONA) proposes to develop an on-line flutter prediction tool using the parameter varying estimation (PVE) methodology, called the PVE Toolbox, to ensure the flight safety during the flight flutter test and to prevent the damage to the wind tunnel hardware from the structural failure of the flutter model during wind tunnel flutter test. This tool can be applied to rapidly identify parameters, such as modal damping and frequency from test data measured at pre-flutter flight/wind tunnel conditions, then subsequently to assess the flutter boundary of aircraft/wind tunnel model in real time. In this PVE Toolbox, several system identification techniques are employed to consistently estimate the damping/frequency of the physical modes, followed by the implementation of Zimmerman-Weissenburger flutter margin, damping trends extrapolation, linear parameter varying modeling combined with mu-analysis, and thin plate interpolation method for flutter boundary prediction. Seamlessly integration of the PVE Toolbox into IADS (a real-time flight test data acquisition software system) will significantly improve the on-line flutter prediction capability of the PVE Toolbox. This robust, production-ready, and flight test demonstrated PVE Toolbox will provide flight/wind tunnel test engineers an on-line flutter prediction capability in the control room for decision-making during flight/wind tunnel flutter tests.","startYear":2011,"startMonth":6,"endYear":2013,"endMonth":9,"statusDescription":"Completed","principalInvestigators":[{"contactId":222214,"canUserEdit":false,"firstName":"Jie","lastName":"Zeng","fullName":"Jie Zeng","fullNameInverted":"Zeng, Jie","publicEmail":true,"nacontact":false}],"programDirectors":[{"contactId":206378,"canUserEdit":false,"firstName":"Jason","lastName":"Kessler","fullName":"Jason L Kessler","fullNameInverted":"Kessler, Jason L","middleInitial":"L","primaryEmail":"jason.l.kessler@nasa.gov","publicEmail":true,"nacontact":false}],"programExecutives":[{"contactId":215154,"canUserEdit":false,"firstName":"Jennifer","lastName":"Gustetic","fullName":"Jennifer L Gustetic","fullNameInverted":"Gustetic, Jennifer L","middleInitial":"L","primaryEmail":"jennifer.l.gustetic@nasa.gov","publicEmail":true,"nacontact":false}],"programManagers":[{"contactId":62051,"canUserEdit":false,"firstName":"Carlos","lastName":"Torrez","fullName":"Carlos Torrez","fullNameInverted":"Torrez, Carlos","primaryEmail":"carlos.torrez@nasa.gov","publicEmail":true,"nacontact":false}],"projectManagers":[{"contactId":451612,"canUserEdit":false,"firstName":"Sunil","lastName":"Kukreja","fullName":"Sunil L Kukreja","fullNameInverted":"Kukreja, Sunil L","middleInitial":"L","primaryEmail":"sunil.l.kukreja@nasa.gov","publicEmail":true,"nacontact":false},{"contactId":461333,"canUserEdit":false,"firstName":"Theresa","lastName":"Stanley","fullName":"Theresa M Stanley","fullNameInverted":"Stanley, Theresa M","middleInitial":"M","primaryEmail":"theresa.m.stanley@nasa.gov","publicEmail":true,"nacontact":false}],"website":"","libraryItems":[],"transitions":[{"transitionId":66742,"projectId":9861,"partner":"Other","transitionDate":"2011-06-01","path":"Advanced From","relatedProjectId":8663,"relatedProject":{"acronym":"","projectId":8663,"title":"On-Line Flutter Prediction Tool for Wind Tunnel Flutter Testing using Parameter Varying Estimation Methodology","startTrl":5,"currentTrl":6,"endTrl":6,"benefits":"The potential non-NASA customers for this tool include the R & D arms of USAF, Navy, Army, and the defense industry complex. It can be readily adapted by a wide class of aerospace vehicles ranging from current to next-generation designs such as: (a) USAF's F-22 and F-35 aircrafts at Edwards AFB, (b) UASF's Hilda and/or sensorcraft aircrafts, (c) USAF's next generation stealth and morphing UAV/UCAV, (d) DARPA's new Switchblade Flying Wing Program, and for (e) Micro Air Vehicle (MAV) with enhanced control/maneuver capability.
Comprehensive flutter prediction software is still non-existing; leading to cautious and expensive wind tunnel test programs. ZONA envisions that the proposed Phase I research effort will result in a commercial product, called the PVE Toolbox. This Toolbox can assist NASA in its goal to dramatically reduce the cost and time required to ensure the safety of the flutter model as well as the wind tunnel hardware system.","description":"ZONA Technology, Inc. (ZONA) proposes to develop an on-line flutter prediction tool for wind tunnel model using the parameter varying estimation (PVE) technique to ensure the safety of the flutter model as well as the wind tunnel system. This tool will be applied to rapidly evaluate parameters, such as modal damping and frequency, which are required to assess the flutter boundary of a wind tunnel model in the pre-flutter test conditions. In this PVE Toolbox, system identification techniques such as Polymax and Subspace methods are employed to consistently estimate the damping/frequency of the physical modes, followed by the implementation of Zimmerman-Weissenburger flutter margin method, linear parameter varying modeling combined with ยต analysis, and/or thin plate interpolation method for flutter boundary prediction. In order to minimize the dependence on the experience for obtaining a reliable flutter prediction, an accurate estimation of the auto-spectrum of the output data, k-mean stochastic algorithm for automate modes selection are developed to enhance the on-line capability of the PVE Toolbox. The end product PVE Toolbox can be used by the test engineer as an on-line flutter prediction tool in the wind tunnel to effectively make a timely decision for proceeding to the next test point.","startYear":2010,"startMonth":1,"endYear":2010,"endMonth":7,"statusDescription":"Completed","website":"","program":{"acronym":"SBIR/STTR","active":true,"description":"
The NASA SBIR and STTR programs fund the research, development, and demonstration of innovative technologies that fulfill NASA needs as described in the annual Solicitations and have significant potential for successful commercialization. If you are a small business concern (SBC) with 500 or fewer employees or a non-profit RI such as a university or a research laboratory with ties to an SBC, then NASA encourages you to learn more about the SBIR and STTR programs as a potential source of seed funding for the development of your innovations.
The SBIR and STTR programs have 3 phases:
The SBIR and STTR Phase I contracts last for 6 months with a maximum funding of $125,000, and Phase II contracts last for 24 months with a maximum funding of $750,000 - $1.5 million.
Opportunity for Continued Technology Development Post-Phase II:
The NASA SBIR/STTR Program currently has in place two initiatives for supporting its small business partners past the basic Phase I and Phase II elements of the program that emphasize opportunities for commercialization. Specifically, the NASA SBIR/STTR Program has the Phase II Enhancement (Phase II-E) and Phase II eXpanded (Phase II-X) contract options.
Please review the links below to obtain more information on the SBIR/STTR programs.
Provides an overview of the SBIR and STTR programs as implemented by NASA
Provides access to the annual SBIR/STTR Solicitations containing detailed information on the program eligibility requirements, proposal instructions and research topics and subtopics
Schedule and links for the SBIR/STTR solicitations and selection announcements
Federal and non-Federal sources of assistance for small business
Search our complete archive of awarded project abstracts to learn about what NASA has funded
Still have questions? Visit the program FAQs
","programId":73,"responsibleMd":{"acronym":"STMD","canUserEdit":false,"city":"","external":false,"linkCount":0,"organizationId":4875,"organizationName":"Space Technology Mission Directorate","organizationType":"NASA_Mission_Directorate","naorganization":false,"organizationTypePretty":"NASA Mission Directorate"},"responsibleMdId":4875,"stockImageFileId":36648,"title":"Small Business Innovation Research/Small Business Tech Transfer"},"lastUpdated":"2024-1-10","releaseStatusString":"Released","viewCount":380,"endDateString":"Jul 2010","startDateString":"Jan 2010"},"infoText":"Advanced from another project within the program","infoTextExtra":"Another project within the program (On-Line Flutter Prediction Tool for Wind Tunnel Flutter Testing using Parameter Varying Estimation Methodology)","dateText":"June 2011"},{"transitionId":66741,"projectId":9861,"transitionDate":"2013-09-01","path":"Closed Out","closeoutDocuments":[{"title":"Final Summary Chart","file":{"fileExtension":"pdf","fileId":306522,"fileName":"204922_09_27_2013_14_23_44","fileSize":230357,"objectId":66741,"objectType":{"lkuCodeId":1841,"code":"TRANSITION_FILES","description":"Transition Files","lkuCodeTypeId":182,"lkuCodeType":{"codeType":"OBJECT_TYPE","description":"Object Type"}},"fileSizeString":"225.0 KB"},"transitionId":66741,"fileId":306522}],"infoText":"Closed out","infoTextExtra":"","dateText":"September 2013"}],"responsibleMd":{"acronym":"STMD","canUserEdit":false,"city":"","external":false,"linkCount":0,"organizationId":4875,"organizationName":"Space Technology Mission Directorate","organizationType":"NASA_Mission_Directorate","naorganization":false,"organizationTypePretty":"NASA Mission Directorate"},"program":{"acronym":"SBIR/STTR","active":true,"description":"The NASA SBIR and STTR programs fund the research, development, and demonstration of innovative technologies that fulfill NASA needs as described in the annual Solicitations and have significant potential for successful commercialization. If you are a small business concern (SBC) with 500 or fewer employees or a non-profit RI such as a university or a research laboratory with ties to an SBC, then NASA encourages you to learn more about the SBIR and STTR programs as a potential source of seed funding for the development of your innovations.
The SBIR and STTR programs have 3 phases:
The SBIR and STTR Phase I contracts last for 6 months with a maximum funding of $125,000, and Phase II contracts last for 24 months with a maximum funding of $750,000 - $1.5 million.
Opportunity for Continued Technology Development Post-Phase II:
The NASA SBIR/STTR Program currently has in place two initiatives for supporting its small business partners past the basic Phase I and Phase II elements of the program that emphasize opportunities for commercialization. Specifically, the NASA SBIR/STTR Program has the Phase II Enhancement (Phase II-E) and Phase II eXpanded (Phase II-X) contract options.
Please review the links below to obtain more information on the SBIR/STTR programs.
Provides an overview of the SBIR and STTR programs as implemented by NASA
Provides access to the annual SBIR/STTR Solicitations containing detailed information on the program eligibility requirements, proposal instructions and research topics and subtopics
Schedule and links for the SBIR/STTR solicitations and selection announcements
Federal and non-Federal sources of assistance for small business
Search our complete archive of awarded project abstracts to learn about what NASA has funded
Still have questions? Visit the program FAQs
","programId":73,"responsibleMd":{"acronym":"STMD","canUserEdit":false,"city":"","external":false,"linkCount":0,"organizationId":4875,"organizationName":"Space Technology Mission Directorate","organizationType":"NASA_Mission_Directorate","naorganization":false,"organizationTypePretty":"NASA Mission Directorate"},"responsibleMdId":4875,"stockImageFileId":36648,"title":"Small Business Innovation Research/Small Business Tech Transfer"},"leadOrganization":{"canUserEdit":false,"city":"Scottsdale","country":{"abbreviation":"US","countryId":236,"name":"United States"},"countryId":236,"external":true,"linkCount":0,"organizationId":2665,"organizationName":"ZONA Technology, Inc.","organizationType":"Industry","stateTerritory":{"abbreviation":"AZ","country":{"abbreviation":"US","countryId":236,"name":"United States"},"countryId":236,"name":"Arizona","stateTerritoryId":45},"stateTerritoryId":45,"msiData":{},"setAsideData":["Small Disadvantaged Business (SDB)"],"ein":"814778743 ","naorganization":false,"organizationTypePretty":"Industry"},"supportingOrganizations":[{"acronym":"AFRC","canUserEdit":false,"city":"Edwards","country":{"abbreviation":"US","countryId":236,"name":"United States"},"countryId":236,"external":false,"linkCount":0,"organizationId":4893,"organizationName":"Armstrong Flight Research Center","organizationType":"NASA_Center","stateTerritory":{"abbreviation":"CA","country":{"abbreviation":"US","countryId":236,"name":"United States"},"countryId":236,"name":"California","stateTerritoryId":59},"stateTerritoryId":59,"naorganization":false,"organizationTypePretty":"NASA Center"}],"statesWithWork":[{"abbreviation":"AZ","country":{"abbreviation":"US","countryId":236,"name":"United States"},"countryId":236,"name":"Arizona","stateTerritoryId":45},{"abbreviation":"CA","country":{"abbreviation":"US","countryId":236,"name":"United States"},"countryId":236,"name":"California","stateTerritoryId":59}],"lastUpdated":"2024-1-10","releaseStatusString":"Released","viewCount":551,"endDateString":"Sep 2013","startDateString":"Jun 2011"}}