{"projectId":11540,"project":{"projectId":11540,"title":"A Hybrid Systems Strategy to Support Autonomous Spacecraft Trajectory Design and Optimization in Multiple Dynamical Regimes","startDate":"2012-08-01","startYear":2012,"startMonth":8,"endDate":"2014-07-31","endYear":2014,"endMonth":7,"programId":69,"program":{"ableToSelect":false,"acronym":"STRG","isActive":true,"description":"<p> \tThe Space Technology Research Grants Program will accelerate the development of &quot;push&quot; technologies to support the future space science and exploration needs of NASA, other government agencies and the commercial space sector. Innovative efforts with high risk and high payoff will be encouraged. 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Specifically, a method for the autonomous generation, selection, and optimization of reference spacecraft trajectories in multiple gravitational regimes will be developed. The proposed trajectory design and optimization scheme is sufficiently general to allow for wide implementation among a variety of spacecraft and scenarios. The methodology will be autonomous and adaptable such that baseline solutions are generated numerically and, when necessary, re-designed with a minimum of human-in-the-loop interaction. The procedure will independently determine an appropriate gravitational model for reference trajectory design and controller/estimator operation based on navigational data. Hybrid systems theory is implemented to specify a sequence of dynamical regimes that will satisfy mission objectives. Therefore, a baseline design for a mission from Earth to Europa, for example, could include propagations in Earth, Sun-Earth, Sun, Sun-Jupiter, and Jupiter-Europa gravitational models with low-thrust engine operation and impulsive maneuvers during varying segments along the full trajectory. Reference trajectories, comprised of impulsive maneuvers and/or low-thrust arcs, are optimized using a combination of functional and parameter optimization strategies. The underlying targeting process is inherently numerical, for example a shooting or collocation scheme, because of the non-linearity of the gravitational models and the likely inclusion of some type of continuous thrust or forcing effects. The primary investigation method will be numerical simulation of the autonomous scheme and its components. 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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.</p><p><strong>The SBIR and STTR programs have 3 phases</strong>:</p><ul><li><strong>Phase I</strong> is the opportunity to establish the scientific, technical, and commercial feasibility of the proposed innovation in fulfillment of NASA needs.</li><li><strong>Phase II</strong> is focused on the development, demonstration and delivery of the proposed innovation.</li></ul><p>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.</p><ul><li><strong>Phase III</strong> is the commercialization of innovative technologies, products, and services resulting from either a Phase I or Phase II contract. 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Specifically, the NASA SBIR/STTR Program has the Phase II Enhancement (Phase II-E) and Phase II eXpanded (Phase II-X) contract options.&nbsp;</p><p><strong>Please review the links below to obtain more information on the SBIR/STTR programs.</strong></p><ul><li><strong><a target=\"_blank\" href=\"http://sbir.gsfc.nasa.gov/sites/default/files/ParticipationGuide.pdf\">Participation Guide</a></strong></li></ul><p>Provides an overview of the SBIR and STTR programs as implemented by NASA</p><ul><li><strong><a href=\"http://sbir.gsfc.nasa.gov/solicitations\">Program Solicitations</a></strong></li></ul><p>Provides access to the annual SBIR/STTR Solicitations containing detailed information on the program eligibility requirements, proposal instructions and research topics and subtopics</p><ul><li><strong><a href=\"http://sbir.gsfc.nasa.gov/prg_sched_anncmnt\">Schedule and Awards</a></strong></li></ul><p>Schedule and links for the SBIR/STTR solicitations and selection announcements</p><ul><li><strong><a href=\"http://sbir.gsfc.nasa.gov/content/additional-sources-assistance\">Sources of Assistance</a></strong></li></ul><p>Federal and non-Federal sources of assistance for small business</p><ul><li><strong><a href=\"http://sbir.gsfc.nasa.gov/abstract_archives\">Awarded Abstracts</a></strong></li></ul><p>Search our complete archive of awarded project abstracts to learn about what NASA has funded</p><ul><li><strong><a href=\"http://sbir.gsfc.nasa.gov/content/frequently-asked-questions\">Frequently Asked Questions</a></strong></li></ul><p>&nbsp;Still have questions? Visit the program FAQs</p>","parentProgram":{"ableToSelect":false,"isActive":true,"description":"Catalyst is a portfolio of early stage programs that specialize in different innovation constituencies and mechanisms to push the state of the art in aerospace technology development","programId":92327,"responsibleMd":{"canUserEdit":false,"locationEdit":false,"organizationRolePretty":"","organizationTypePretty":""},"title":"Catalyst","manageGaps":false,"acronymOrTitle":"Catalyst"},"parentProgramId":92327,"programId":73,"responsibleMd":{"organizationId":4875,"organizationName":"Space Technology Mission Directorate","acronym":"STMD","organizationType":"NASA_Mission_Directorate","canUserEdit":false,"locationEdit":false,"organizationRolePretty":"","organizationTypePretty":"NASA Mission Directorate"},"responsibleMdOffice":4875,"stockImageFileId":36648,"title":"Small Business Innovation Research/Small Business Tech Transfer","manageGaps":false,"acronymOrTitle":"SBIR/STTR"},"description":"The overall objective of the proposal is to design, develop and demonstrate a potentially portable Compton x-ray scatter 3D-imaging system by using specially designed rotationally movable x-ray source and x-ray detector, and the development of a suitable 3D-processing computer model. 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Construction and Related Industries - There is a need for contractors to be able to image inside walls, floors, ceilings, etc., to determine the location of pipes, electrical wires, and other internal obstructions before demolition or remodel work.<br /> <br />The proposed three-dimensional backscatter x-ray imaging system addresses he interest for NASA is one-side 3D imaging of non-uniformities in non metallic space flight materials. The proposed x-ray backscatter 3D system will help determine defects, voids or imperfections in the workmanship of the Space Shuttle components at the launch site. In general, a portable, wireless 3D or in-depth imaging capability will address the NASA¡¦s need for a system that can generate 3D images of non-metallic materials when the access is limited to one side of them. The system portability will allow it to be brought to the spacecraft and to be handled in the field for multiple applications. 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Therefore, a baseline design for a mission from Earth to Europa, for example, could include propagations in Earth, Sun-Earth, Sun, Sun-Jupiter, and Jupiter-Europa gravitational models with low-thrust engine operation and impulsive maneuvers during varying segments along the full trajectory. Reference trajectories, comprised of impulsive maneuvers and/or low-thrust arcs, are optimized using a combination of functional and parameter optimization strategies. The underlying targeting process is inherently numerical, for example a shooting or collocation scheme, because of the non-linearity of the gravitational models and the likely inclusion of some type of continuous thrust or forcing effects. The primary investigation method will be numerical simulation of the autonomous scheme and its components. Because the purpose of this investigation is the development of the autonomous strategy, emphasis will be placed on robust operation rather than performance-optimized for a particular computing platform. Sample controllers/estimators will be included to test the operation of the overall design strategy, but the actual operation of the guidance and navigation system is not a focus of this research. Whether the objective is preliminary design or operations, the end goal is a process such that a desired spacecraft end-state and an allowable range of mission parameters are initially defined and a new design for the spacecraft path then emerges independently with an optimal series of maneuvers and/or low-thrust intervals to generate the desired response of the vehicle. The proposed strategy will extend the mission design and operation capabilities of future near-Earth and deep space NASA missions as well as increase engineering knowledge of autonomy and system optimization and design.","benefits":"The proposed strategy will extend the mission design and operation capabilities of future near-Earth and deep space NASA missions as well as increase engineering knowledge of autonomy and system optimization and design.","releaseStatus":"Released","status":"Completed","destinationType":["Earth"],"trlBegin":2,"trlCurrent":3,"trlEnd":3,"favorited":false,"detailedFunding":false,"programContacts":[{"contactId":183514,"canUserEdit":false,"firstName":"Hung","lastName":"Nguyen","fullName":"Hung D Nguyen","fullNameInverted":"Nguyen, Hung D","middleInitial":"D","email":"hung.d.nguyen@nasa.gov","receiveEmail":"Subscribed_User","programContactRole":"Program_Manager","programContactId":162,"programId":69,"programContactRolePretty":"Program Manager","projectContactRolePretty":""},{"contactId":321177,"canUserEdit":false,"firstName":"Matthew","lastName":"Deans","fullName":"Matthew C Deans","fullNameInverted":"Deans, Matthew C","middleInitial":"C","email":"matthew.c.deans-1@nasa.gov","receiveEmail":"Subscribed_User","programContactRole":"Program_Director","programContactId":267,"programId":69,"programContactRolePretty":"Program Director","projectContactRolePretty":""}],"endDateString":"Jul 2014","startDateString":"Aug 2012"},"technologyOutcomeDate":"2014-07-31","technologyOutcomePath":"Closed_Out","details":"A strategy combining a multitude of gravitational models and propulsion methods, functional and parameter optimization, hybrid systems methodologies, and graph search algorithms is proposed. Specifically, a framework for the automated generation, selection, and optimization of reference spacecraft trajectories encountering multiple targets of interest is developed. The proposed trajectory design and optimization scheme is sufficiently general to allow for wide implementation among a variety of spacecraft and scenarios. The strategy is flexible in implementation details, allowing the appropriate balance of automated processes and human interaction to be specified for a wide range of mission scenarios. The methodology is focused primarily upon the generation of baseline solutions within the context of simplified dynamical regimes; however the methods and algorithms investigated are readily incorporated into later stages of the trajectory design process and, ultimately, spaceflight operations. Furthermore, preliminary results are readily transitioned to higher fidelity models of vehicle operation. Two specific mission scenarios, namely the active removal of debris near to the Earth as well as the generation of survey tours of the Trojan asteroids, are investigated. Each scenario offers unique insight into the application of the trajectory design automation framework, while the preliminary results for both scenarios indicate that high value encounter sequences are achievable given current and near-term technologies. The automated trajectory design strategy, when combined with autonomous closed-loop guidance and navigation capability, supplies the base capability for truly autonomous space vehicles. In the interim, however, the currently available automated processes enhance the ability of human operators to identify and exploit potential trajectory options. ","infoText":"Closed out","infoTextExtra":"Project closed out","isIndirect":false,"technologyOutcomePathPretty":"Closed Out","technologyOutcomeRationalePretty":"","infusionPretty":"","isBiDirectional":false,"technologyOutcomeDateString":"Jul 2014","technologyOutcomeDateFullString":"July 2014","technologyOutcomePartnerPretty":""},{"technologyOutcomeId":92197,"projectId":11540,"project":{"projectId":11540,"title":"A Hybrid Systems Strategy to Support Autonomous Spacecraft Trajectory Design and Optimization in Multiple Dynamical Regimes","startDate":"2012-08-01","startYear":2012,"startMonth":8,"endDate":"2014-07-31","endYear":2014,"endMonth":7,"programId":69,"program":{"ableToSelect":false,"acronym":"STRG","isActive":true,"description":"<p> \tThe Space Technology Research Grants Program will accelerate the development of &quot;push&quot; technologies to support the future space science and exploration needs of NASA, other government agencies and the commercial space sector. Innovative efforts with high risk and high payoff will be encouraged. The program is composed of two competitively awarded components.</p> ","parentProgram":{"ableToSelect":false,"isActive":true,"description":"Catalyst is a portfolio of early stage programs that specialize in different innovation constituencies and mechanisms to push the state of the art in aerospace technology development","programId":92327,"responsibleMd":{"canUserEdit":false,"locationEdit":false,"organizationRolePretty":"","organizationTypePretty":""},"title":"Catalyst","manageGaps":false,"acronymOrTitle":"Catalyst"},"parentProgramId":92327,"programId":69,"responsibleMd":{"organizationId":4875,"organizationName":"Space Technology Mission Directorate","acronym":"STMD","organizationType":"NASA_Mission_Directorate","canUserEdit":false,"locationEdit":false,"organizationRolePretty":"","organizationTypePretty":"NASA Mission Directorate"},"responsibleMdOffice":4875,"stockImageFileId":36658,"title":"Space Technology Research Grants","manageGaps":false,"acronymOrTitle":"STRG"},"description":"With ever increasing numbers of near-Earth satellites and deep space missions, autonomous spacecraft guidance, navigation, and control (GNC) systems are increasingly attractive as a method both to reduce the cost of ground operations and to enable mission scenarios beyond Earths neighborhood. Additionally, self-reliant GNC systems possess the potential to reduce spacecraft response times where delays are introduced by communications lags and human-in-the-loop interactions. Autonomy is particularly important for deep space missions where there is significant response time delay and sporadic communication due to the physical distance between the spacecraft and Earth. A strategy that independently and adaptively handles the GNC requirements, from generating baseline trajectories to control about the reference path, in an effort to satisfy specified mission objectives is therefore highly desirable. The scope of the current problem is restricted to the generation and optimization of reference solutions for spacecraft trajectories. A strategy combining a multitude of gravitational models and propulsion methods, functional and direct optimization, and hybrid systems methodologies is proposed. Specifically, a method for the autonomous generation, selection, and optimization of reference spacecraft trajectories in multiple gravitational regimes will be developed. The proposed trajectory design and optimization scheme is sufficiently general to allow for wide implementation among a variety of spacecraft and scenarios. The methodology will be autonomous and adaptable such that baseline solutions are generated numerically and, when necessary, re-designed with a minimum of human-in-the-loop interaction. The procedure will independently determine an appropriate gravitational model for reference trajectory design and controller/estimator operation based on navigational data. Hybrid systems theory is implemented to specify a sequence of dynamical regimes that will satisfy mission objectives. Therefore, a baseline design for a mission from Earth to Europa, for example, could include propagations in Earth, Sun-Earth, Sun, Sun-Jupiter, and Jupiter-Europa gravitational models with low-thrust engine operation and impulsive maneuvers during varying segments along the full trajectory. Reference trajectories, comprised of impulsive maneuvers and/or low-thrust arcs, are optimized using a combination of functional and parameter optimization strategies. The underlying targeting process is inherently numerical, for example a shooting or collocation scheme, because of the non-linearity of the gravitational models and the likely inclusion of some type of continuous thrust or forcing effects. The primary investigation method will be numerical simulation of the autonomous scheme and its components. Because the purpose of this investigation is the development of the autonomous strategy, emphasis will be placed on robust operation rather than performance-optimized for a particular computing platform. Sample controllers/estimators will be included to test the operation of the overall design strategy, but the actual operation of the guidance and navigation system is not a focus of this research. Whether the objective is preliminary design or operations, the end goal is a process such that a desired spacecraft end-state and an allowable range of mission parameters are initially defined and a new design for the spacecraft path then emerges independently with an optimal series of maneuvers and/or low-thrust intervals to generate the desired response of the vehicle. The proposed strategy will extend the mission design and operation capabilities of future near-Earth and deep space NASA missions as well as increase engineering knowledge of autonomy and system optimization and design.","benefits":"The proposed strategy will extend the mission design and operation capabilities of future near-Earth and deep space NASA missions as well as increase engineering knowledge of autonomy and system optimization and design.","releaseStatus":"Released","status":"Completed","destinationType":["Earth"],"trlBegin":2,"trlCurrent":3,"trlEnd":3,"favorited":false,"detailedFunding":false,"programContacts":[{"contactId":183514,"canUserEdit":false,"firstName":"Hung","lastName":"Nguyen","fullName":"Hung D Nguyen","fullNameInverted":"Nguyen, Hung D","middleInitial":"D","email":"hung.d.nguyen@nasa.gov","receiveEmail":"Subscribed_User","programContactRole":"Program_Manager","programContactId":162,"programId":69,"programContactRolePretty":"Program Manager","projectContactRolePretty":""},{"contactId":321177,"canUserEdit":false,"firstName":"Matthew","lastName":"Deans","fullName":"Matthew C Deans","fullNameInverted":"Deans, Matthew C","middleInitial":"C","email":"matthew.c.deans-1@nasa.gov","receiveEmail":"Subscribed_User","programContactRole":"Program_Director","programContactId":267,"programId":69,"programContactRolePretty":"Program Director","projectContactRolePretty":""}],"endDateString":"Jul 2014","startDateString":"Aug 2012"},"relatedProjectId":10377,"relatedProject":{"projectId":10377,"title":"Three-Dimensional Backscatter X-Ray Imaging System","startDate":"2010-01-29","startYear":2010,"startMonth":1,"endDate":"2011-01-28","endYear":2011,"endMonth":1,"programId":73,"program":{"ableToSelect":false,"acronym":"SBIR/STTR","isActive":true,"description":"<p>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.</p><p><strong>The SBIR and STTR programs have 3 phases</strong>:</p><ul><li><strong>Phase I</strong> is the opportunity to establish the scientific, technical, and commercial feasibility of the proposed innovation in fulfillment of NASA needs.</li><li><strong>Phase II</strong> is focused on the development, demonstration and delivery of the proposed innovation.</li></ul><p>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.</p><ul><li><strong>Phase III</strong> is the commercialization of innovative technologies, products, and services resulting from either a Phase I or Phase II contract. Phase III contracts are funded from sources other than the SBIR and STTR programs and may be awarded without further competition.</li></ul><p><strong>Opportunity for Continued Technology Development Post-Phase II</strong>:</p><p>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.&nbsp;</p><p><strong>Please review the links below to obtain more information on the SBIR/STTR programs.</strong></p><ul><li><strong><a target=\"_blank\" href=\"http://sbir.gsfc.nasa.gov/sites/default/files/ParticipationGuide.pdf\">Participation Guide</a></strong></li></ul><p>Provides an overview of the SBIR and STTR programs as implemented by NASA</p><ul><li><strong><a href=\"http://sbir.gsfc.nasa.gov/solicitations\">Program Solicitations</a></strong></li></ul><p>Provides access to the annual SBIR/STTR Solicitations containing detailed information on the program eligibility requirements, proposal instructions and research topics and subtopics</p><ul><li><strong><a href=\"http://sbir.gsfc.nasa.gov/prg_sched_anncmnt\">Schedule and Awards</a></strong></li></ul><p>Schedule and links for the SBIR/STTR solicitations and selection announcements</p><ul><li><strong><a href=\"http://sbir.gsfc.nasa.gov/content/additional-sources-assistance\">Sources of Assistance</a></strong></li></ul><p>Federal and non-Federal sources of assistance for small business</p><ul><li><strong><a href=\"http://sbir.gsfc.nasa.gov/abstract_archives\">Awarded Abstracts</a></strong></li></ul><p>Search our complete archive of awarded project abstracts to learn about what NASA has funded</p><ul><li><strong><a href=\"http://sbir.gsfc.nasa.gov/content/frequently-asked-questions\">Frequently Asked Questions</a></strong></li></ul><p>&nbsp;Still have questions? Visit the program FAQs</p>","parentProgram":{"ableToSelect":false,"isActive":true,"description":"Catalyst is a portfolio of early stage programs that specialize in different innovation constituencies and mechanisms to push the state of the art in aerospace technology development","programId":92327,"responsibleMd":{"canUserEdit":false,"locationEdit":false,"organizationRolePretty":"","organizationTypePretty":""},"title":"Catalyst","manageGaps":false,"acronymOrTitle":"Catalyst"},"parentProgramId":92327,"programId":73,"responsibleMd":{"organizationId":4875,"organizationName":"Space Technology Mission Directorate","acronym":"STMD","organizationType":"NASA_Mission_Directorate","canUserEdit":false,"locationEdit":false,"organizationRolePretty":"","organizationTypePretty":"NASA Mission Directorate"},"responsibleMdOffice":4875,"stockImageFileId":36648,"title":"Small Business Innovation Research/Small Business Tech Transfer","manageGaps":false,"acronymOrTitle":"SBIR/STTR"},"description":"The overall objective of the proposal is to design, develop and demonstrate a potentially portable Compton x-ray scatter 3D-imaging system by using specially designed rotationally movable x-ray source and x-ray detector, and the development of a suitable 3D-processing computer model. The proposed rotational configuration will allow the acquisition of multiple projections or images 360a around the region of interest, probing a conical volume of the object to be interrogated. The subsequent application of a computer model on these multiple projections, developed during Phase I, will allow a three-dimensional reconstruction of the object under study. In the proposed x-ray imaging system, the primary technical advance will be to extend methods that normally supplied a 2D projected image through a sheet of material, to a 3D image with more complicated features at different depths, such as cracks, corrosion, voids, delaminations, land mines, or improvised explosive devices. Also, the proposed system will be potentially portable, allowing it to be brought to the object to be imaged. The Beta and Production Phases of the proposed system would incorporate a battery self-contained package and wireless data transfer capabilities. These systems would revolutionize the current imaging applications that rely on 2D x-ray imaging systems only.","benefits":"Aerospace - In addition to NASA's needs, there is a routine need in the aerospace industry to inspect for metal fatigue on the wings and fuselage of airplanes. Cargo Inspection - There is a demonstrated need for one-sided imaging for inspecting cargo and other transportation containers that are already loaded onto a ship or other transportation carrier. A portable, battery-powered unit would enable random inspections at a much lower cost than truck-based imaging systems. Explosives Detection - Current explosives ordinance detection systems require an imaging plate to be positioned behind a suspicious package such as a suitcase or backpack. The x-ray source is positioned in front of the package, and an x-ray transmission image is obtained. Construction and Related Industries - There is a need for contractors to be able to image inside walls, floors, ceilings, etc., to determine the location of pipes, electrical wires, and other internal obstructions before demolition or remodel work.<br /> <br />The proposed three-dimensional backscatter x-ray imaging system addresses he interest for NASA is one-side 3D imaging of non-uniformities in non metallic space flight materials. The proposed x-ray backscatter 3D system will help determine defects, voids or imperfections in the workmanship of the Space Shuttle components at the launch site. In general, a portable, wireless 3D or in-depth imaging capability will address the NASA¡¦s need for a system that can generate 3D images of non-metallic materials when the access is limited to one side of them. The system portability will allow it to be brought to the spacecraft and to be handled in the field for multiple applications. Furthermore, this 3D capability can be used at the launch site to meet the inspection requirements for new NASA programs, such as the Constellation program.","releaseStatus":"Released","status":"Completed","destinationType":["Outside_the_Solar_System"],"trlBegin":2,"trlCurrent":4,"trlEnd":4,"favorited":false,"detailedFunding":false,"programContacts":[{"contactId":62051,"canUserEdit":false,"firstName":"Carlos","lastName":"Torrez","fullName":"Carlos Torrez","fullNameInverted":"Torrez, Carlos","email":"carlos.torrez@nasa.gov","receiveEmail":"Subscribed_User","programContactRole":"Program_Manager","programContactId":194,"programId":73,"programContactRolePretty":"Program Manager","projectContactRolePretty":""},{"contactId":206378,"canUserEdit":false,"firstName":"Jason","lastName":"Kessler","fullName":"Jason L Kessler","fullNameInverted":"Kessler, Jason L","middleInitial":"L","email":"jason.l.kessler@nasa.gov","receiveEmail":"Subscribed_User","programContactRole":"Program_Director","programContactId":143,"programId":73,"programContactRolePretty":"Program Director","projectContactRolePretty":""}],"endDateString":"Jan 2011","startDateString":"Jan 2010"},"technologyOutcomePartner":"Other","technologyOutcomeDate":"2012-08-01","technologyOutcomePath":"Advanced_From","infoText":"Advanced from another project within the program","infoTextExtra":"Another project within the program (Three-Dimensional Backscatter X-Ray Imaging System)","isIndirect":true,"technologyOutcomePathPretty":"Advanced From","technologyOutcomeRationalePretty":"","infusionPretty":"","isBiDirectional":true,"technologyOutcomeDateString":"Aug 2012","technologyOutcomeDateFullString":"August 2012","technologyOutcomePartnerPretty":"Other"}],"primaryImage":{"file":{"fileExtension":"jpg","fileId":355636,"presignedUpload":false,"fileSizeString":"0 Byte"},"libraryItemId":354658,"description":"Project Image   A Hybrid Systems Strategy to Support Autonomous Spacecraft Trajectory Design and Optimization in Multiple Dynamical Regimes","projectId":11540,"publishedDateString":"","entryDateString":"","libraryItemTypePretty":"","modifiedDateString":""},"libraryItems":[{"file":{"fileExtension":"jpg","fileId":355636,"fileName":"11540-1363113300240","fileSize":194342,"objectId":354658,"objectType":"libraryItemFiles","presignedUpload":false,"fileSizeString":"189.8 KB"},"files":[{"fileExtension":"jpg","fileId":355636,"fileName":"11540-1363113300240","fileSize":194342,"objectId":354658,"objectType":"libraryItemFiles","presignedUpload":false,"fileSizeString":"189.8 KB"}],"libraryItemId":354658,"title":"11540-1363113300240.jpg","description":"Project Image   A Hybrid Systems Strategy to Support Autonomous Spacecraft Trajectory Design and Optimization in Multiple Dynamical Regimes","libraryItemType":"Image","projectId":11540,"isPrimary":true,"internalOnly":false,"publishedDateString":"","entryDateString":"01/22/25 01:10 AM","libraryItemTypePretty":"Image","modifiedDateString":"01/09/24 07:57 PM"},{"files":[],"libraryItemId":354663,"title":"Project Website","libraryItemType":"Link","url":"https://www.nasa.gov/directorates/spacetech/home/index.html","projectId":11540,"internalOnly":false,"publishedDateString":"","entryDateString":"01/22/25 01:10 AM","libraryItemTypePretty":"Link","modifiedDateString":"10/25/24 02:23 PM"}],"states":[{"abbreviation":"IN","country":{"abbreviation":"US","countryId":236,"name":"United States"},"countryId":236,"name":"Indiana","stateTerritoryId":37,"isTerritory":false}],"endDateString":"Jul 2014","startDateString":"Aug 2012"}}