{"project":{"acronym":"","projectId":89607,"title":"Prediction of Strutural Response and Fluid-Induced Vibration in Turbomachinery","primaryTaxonomyNodes":[{"taxonomyNodeId":10887,"taxonomyRootId":8816,"parentNodeId":10886,"level":3,"code":"TX12.5.1","title":"Loads and Vibration","definition":"This area covers advanced loads and dynamics analysis capabilities with a focus on non-linear modeling and analysis and uncertainty quantification. This area includes novel vibration control techniques applicable to systems such as on-orbit docking and capture and advanced aero propulsion systems (e.g. electromagnetic loading of structures for electric aircraft propulsion).","exampleTechnologies":"Development of variational coupled loads analysis techniques, advanced fast coupled loads analysis tools, enhanced structural nonlinear joint dynamics modeling, turbomachinery response analysis tools","hasChildren":false,"hasInteriorContent":true}],"startTrl":3,"currentTrl":5,"endTrl":5,"benefits":"The proposed development of a fully coupled fluid-structure interaction (FSI) tool provides a unique opportunity to optimize design, realize additional system efficiencies, reduce weight and/or cost, and increase part life in future generations of liquid rocket engine (LRE) designs. A fully-coupled FSI tool has a large number of other applications in the NASA launch vehicles propulsion systems including: (a) prediction of rocket launch-induced fluctuating pressure loads and structural response; (b) prediction of water suppression system interactions with ignition over pressure (IOP) accurate prediction of acoustic environment; (c) prediction of vehicle buffet during ascent, (d) fluid-thermal-structural coupling of rocket engine nozzles; (e) FSI in nuclear thermal rockets; (f) prediction of self-generated dynamics of fluid delivery pipes with deformable bellows; (g) liquid propellant tank breathing due to liquid interaction with the flexible tank shell; and (h) design of new generation POGO accumulators with bellows separating liquid and gas phases.
The developed FSI analysis tool will provide accurate high-fidelity aerothermoelastic analyses for dynamic loads for turbomachinery, inducer, delivery pipes, and valves. Aerospace engineers will be able to utilize the technology to analyze early designs thereby reducing the dependence on expensive wind tunnel/water tunnel and flight tests. Benefits will be achieved in final performance, and enhanced structural integrity, prolonged structural life, and improved safety of vehicles. Direct applications include analysis of dynamic loads problems for aerospace vehicles; e.g. buffet, flutter, buzz, and control reversal; and noise, vibrations, and buffet suppression of rotorcraft and commercial air vehicles. Other applications include vortex-blade/control surfaces interaction for rotorcraft and fixed wing aircraft, heat exchanger vibration, strumming of cables and offshore pipelines, galloping of towers and masts, and fatigue of panels.","description":"Advanced turbomachinery components play a critical role in launch vehicle and spacecraft liquid rocket propulsion systems. To achieve desired efficiencies, extremely tight tolerances are often imposed between inducer blades and shrouds or other system components which sets up strong interactions that influence both the aerodynamics and the structural performance of blades and vanes. These transient interactions, including rotor-stator interactions (RSI), can deform the blades and significantly impact the vibrational and acoustic characteristics of the engine, greatly reduce the efficiency, and even lead to blade or vane failure. Current production design tools for turbomachinery do not account for the coupled fluid-structure interaction (FSI) physics associated with these phenomena. This STTR effort will develop and deliver a multidisciplinary design tool for advanced turbomachinery components to account for FSI phenomena and enable more accurate modeling of systems and subscale demonstrators. CFDRC will supplement the NASA massively parallel Loci framework with highly accurate and efficient integrated FSI capabilities to enable better understanding of critical turbomachinery problems in liquid rocket propulsion systems that defy conventional predictions. Loci will be enhanced to enable constrained deformations in moving overset grid systems to support prediction of structural response and fluid-induced vibration in rotating components. Phase I will demonstrate improved modeling fidelity and provide great insight into FSI phenomena in turbomachinery, and Phase II will bring the complete predictive capabilities to production for detailed investigations into advanced turbomachinery for liquid rocket propulsion systems.","startYear":2016,"startMonth":6,"endYear":2017,"endMonth":6,"statusDescription":"Completed","principalInvestigators":[{"contactId":400291,"canUserEdit":false,"firstName":"Robert","lastName":"Harris","fullName":"Robert E Harris","fullNameInverted":"Harris, Robert E","middleInitial":"E","primaryEmail":"reh@cfdrc.com","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":3251535,"canUserEdit":false,"firstName":"Jeffrey","lastName":"West","fullName":"Jeffrey West","fullNameInverted":"West, Jeffrey","primaryEmail":"Jeffrey.S.West@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":[{"file":{"fileExtension":"pdf","fileId":301569,"fileName":"STTR_2016_1_BC_T1.02-9827","fileSize":502005,"objectId":298110,"objectType":{"lkuCodeId":889,"code":"LIBRARY_ITEMS","description":"Library Items","lkuCodeTypeId":182,"lkuCodeType":{"codeType":"OBJECT_TYPE","description":"Object Type"}},"objectTypeId":889,"fileSizeString":"490.2 KB"},"files":[{"fileExtension":"pdf","fileId":301569,"fileName":"STTR_2016_1_BC_T1.02-9827","fileSize":502005,"objectId":298110,"objectType":{"lkuCodeId":889,"code":"LIBRARY_ITEMS","description":"Library Items","lkuCodeTypeId":182,"lkuCodeType":{"codeType":"OBJECT_TYPE","description":"Object Type"}},"objectTypeId":889,"fileSizeString":"490.2 KB"}],"id":298110,"title":"Briefing Chart","description":"Prediction of Strutural Response and Fluid-Induced Vibration in Turbomachinery, Phase I","libraryItemTypeId":1222,"projectId":89607,"primary":false,"publishedDateString":"","contentType":{"lkuCodeId":1222,"code":"DOCUMENT","description":"Document","lkuCodeTypeId":341,"lkuCodeType":{"codeType":"LIBRARY_ITEM_TYPE","description":"Library Item Type"}}},{"caption":"Prediction of Strutural Response and Fluid-Induced Vibration in Turbomachinery, Phase I","file":{"fileExtension":"png","fileId":302831,"fileName":"STTR_2016_1_BC_T1.02-9827","fileSize":485249,"objectId":299376,"objectType":{"lkuCodeId":889,"code":"LIBRARY_ITEMS","description":"Library Items","lkuCodeTypeId":182,"lkuCodeType":{"codeType":"OBJECT_TYPE","description":"Object Type"}},"objectTypeId":889,"fileSizeString":"473.9 KB"},"files":[{"fileExtension":"png","fileId":302831,"fileName":"STTR_2016_1_BC_T1.02-9827","fileSize":485249,"objectId":299376,"objectType":{"lkuCodeId":889,"code":"LIBRARY_ITEMS","description":"Library Items","lkuCodeTypeId":182,"lkuCodeType":{"codeType":"OBJECT_TYPE","description":"Object Type"}},"objectTypeId":889,"fileSizeString":"473.9 KB"}],"id":299376,"title":"Briefing Chart Image","description":"Prediction of Strutural Response and Fluid-Induced Vibration in Turbomachinery, Phase I","libraryItemTypeId":1095,"projectId":89607,"primary":true,"publishedDateString":"","contentType":{"lkuCodeId":1095,"code":"IMAGE","description":"Image","lkuCodeTypeId":341,"lkuCodeType":{"codeType":"LIBRARY_ITEM_TYPE","description":"Library Item Type"}}}],"transitions":[],"primaryImage":{"file":{"fileExtension":"png","fileId":302831,"fileSizeString":"0 Byte"},"id":299376,"description":"Prediction of Strutural Response and Fluid-Induced Vibration in Turbomachinery, Phase I","projectId":89607,"publishedDateString":""},"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
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