424,318 research outputs found

    Concurrent Mission and Systems Design at NASA Glenn Research Center: The Origins of the COMPASS Team

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    Established at the NASA Glenn Research Center (GRC) in 2006 to meet the need for rapid mission analysis and multi-disciplinary systems design for in-space and human missions, the Collaborative Modeling for Parametric Assessment of Space Systems (COMPASS) team is a multidisciplinary, concurrent engineering group whose primary purpose is to perform integrated systems analysis, but it is also capable of designing any system that involves one or more of the disciplines present in the team. The authors were involved in the development of the COMPASS team and its design process, and are continuously making refinements and enhancements. The team was unofficially started in the early 2000s as part of the distributed team known as Team JIMO (Jupiter Icy Moons Orbiter) in support of the multi-center collaborative JIMO spacecraft design during Project Prometheus. This paper documents the origins of a concurrent mission and systems design team at GRC and how it evolved into the COMPASS team, including defining the process, gathering the team and tools, building the facility, and performing studies

    A machine learning enabled multi-fidelity platform for the integrated design of aircraft systems

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    The push toward reducing the aircraft development cycle timemotivates the development of collaborative frameworks that enable themore integrated design of aircraft and their systems. The ModellIng and Simulation tools for Systems IntegratiONon Aircraft (MISSION) project aims to develop an integratedmodelling and simulation framework. This paper focuses on some recent advancements in theMISSION project and presents a design framework that combines a filtering process to down-select feasible architectures, amodeling platformthat simulates the power system of the aircraft, and a machine learning-based clustering and optimization module. This framework enables the designer to prioritize different designs and offers traceability on the optimal choices. In addition, it enables the integration of models at multiple levels of fidelity depending on the size of the design space and the accuracy required. It is demonstrated for the electrification of the Primary Flight Control System (PFCS) and the landing gear braking system using different electric actuation technologies. The performance of different architectures is analyzed with respect to key performance indicators (fuel burn, weight, power). The optimization process benefits from a data-driven localization step to identify sets of similar architectures. The framework demonstrates the capability of optimizing across multiple, different system architectures in an efficient way that is scalable for larger design spaces and larger dimensionality problems

    Ratava\u27s line: Emergent learning and design using collaborative virtual worlds

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    Ratava\u27s Line is an online, 3D virtual world fashion and interactive narrative project created collaboratively by students at both the Fashion Institute of Technology (FIT) in New York City and at Interactive Arts at Simon Fraser University (SFU) in Vancouver, Canada, using emergent, collaborative 2D and 3D systems. This distance learning project, developed over two months and culminating in an online event in multiple, remote locations, integrated three key design elements: the translation of original 2D fashion designs from FIT students into 3D avatar space; exhibits of artwork of student and professional artists from New York City and Vancouver in virtual galleries; and creation of an interactive narrative "fashion cyber-mystery" for online users to participate in and solve in a culminating, cyber-physical event. The overall project goal was to explore how online collaboration systems and virtual environments can be used practically for distance learning, fashion and virtual worlds design, development of new marketing tools including virtual portfolios, and creation of cross cultural online/physical events. The result of this process was an interdisciplinary, cross-institutional, international effort in collaborative design in virtual environments, and a successful exercise in emergent, collaborative distance learning. © ACM, 2004. This is the author\u27s version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in International Conference on Computer Graphics and Interactive Techniques, page 25. (2004). http://doi.acm.org/10.1145/1186107.118613

    A Process for Comparing Dynamics of Distributed Space Systems Simulations

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    The paper describes a process that was developed for comparing the primary orbital dynamics behavior between space systems distributed simulations. This process is used to characterize and understand the fundamental fidelities and compatibilities of the modeling of orbital dynamics between spacecraft simulations. This is required for high-latency distributed simulations such as NASA s Integrated Mission Simulation and must be understood when reporting results from simulation executions. This paper presents 10 principal comparison tests along with their rationale and examples of the results. The Integrated Mission Simulation (IMSim) (formerly know as the Distributed Space Exploration Simulation (DSES)) is a NASA research and development project focusing on the technologies and processes that are related to the collaborative simulation of complex space systems involved in the exploration of our solar system. Currently, the NASA centers that are actively participating in the IMSim project are the Ames Research Center, the Jet Propulsion Laboratory (JPL), the Johnson Space Center (JSC), the Kennedy Space Center, the Langley Research Center and the Marshall Space Flight Center. In concept, each center participating in IMSim has its own set of simulation models and environment(s). These simulation tools are used to build the various simulation products that are used for scientific investigation, engineering analysis, system design, training, planning, operations and more. Working individually, these production simulations provide important data to various NASA projects

    INTERDISCIPLINARITY IN PUBLIC SPACE PARTICIPATIVE PROJECTS : METHODS AND RESULTS IN PRACTICE AND TEACHING

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    Because Urban Design is a territory of integrative synthesis, the “overall view” that it requires comes through the collaboration of various sources of knowledge, some through professional and others through non-professional knowledge of users. The representation of actors involved in design (be them other professionals, urban deciders or users) is a part of research and teaching culture for several reasons namely because social and cultural interaction in the context of Urban Design management requires several capacities. CRPOLIS, an research interdisciplinary center on urban studies in Barcelona University is linked to Urban Design teaching at master’s degree level and supports an interdisciplinary research program also at PhD level in collaboration with other centers, in Spain and Portugal (such as CESUR-IST) where some cases of real “hands on” processes are developed. The role of interdisciplinarity in collaborative knowledge is relevant in gathering and interacting in three major directions: 1. In the construction of collaborative interdisciplinary research methodologies 2. In the design process of cities in transformation 3. In the development of design practice and studio teaching methods We shall see in this paper how interdisciplinary approaches correspond to new and complex urban transformations, focusing on the importance of actors’ interaction processes, combining professional and non-professional knowledge and theory-practice relations. Therefore, we aim at a deepening in public space area of knowledgeunder the growing complexity of urban life. We see it as a base for further development of collaborative projects and their implications on community empowerment and urban governance at local level. Motivations of this line of work are persistent in several ongoing research projects, aiming to: -Understand public space as a cohesion factor both in urban life and urban form -Manage processes and strategies as elements of urban transformation, -Stimulate the understanding of actors’ roles in urban design practices. -Favoring the questioning of emerging aspects of urban space production... The paper presents and analyses processes, methods and results from civic participation projects developed in the neighbourhood of BarĂČ de Viver (Barcelona) and in the District of Marvila (Lisbon). In the first case, a long process initiated in 2004 and partially completed in 2011, neighbours developed the projects "Memory Wall" and Ciutat d'Asuncion Promenade as part of identity construction in public space, in collaboration with a team of facilitators from CrPolis group. In the second case, different participatory processes dated from 2001 and 2003 have resulted in the implementation of a specific identity urban brand and communication system with an ongoing project of "maps" construction according to the neighbours perception and representation systems. We may conclude that processes of urban governance require more active participation of citizens in projects regarding the improvement of quality of life. At the same time, the implementation of these processes requires a clear interdisciplinary approach , both with respect to the negotiation processes and the development of public space as an "urban structuring product" that we can axiomatically define by its multidimensional structure and its interaction with urban social life. In all these projects neighbors have a prominent role, which in theory and method offers a serious reflection on how to develop participatory processes on public space with actors interactionat the same level, with local governments, experts and politicians, involving non-professional knowledge in collaborative environment

    Business Intelligence Modeling in Launch Operations

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    This technology project is to advance an integrated Planning and Management Simulation Model for evaluation of risks, costs, and reliability of launch systems from Earth to Orbit for Space Exploration. The approach builds on research done in the NASA ARC/KSC developed Virtual Test Bed (VTB) to integrate architectural, operations process, and mission simulations for the purpose of evaluating enterprise level strategies to reduce cost, improve systems operability, and reduce mission risks. The objectives are to understand the interdependency of architecture and process on recurring launch cost of operations, provide management a tool for assessing systems safety and dependability versus cost, and leverage lessons learned and empirical models from Shuttle and International Space Station to validate models applied to Exploration. The systems-of-systems concept is built to balance the conflicting objectives of safety, reliability, and process strategy in order to achieve long term sustainability. A planning and analysis test bed is needed for evaluation of enterprise level options and strategies for transit and launch systems as well as surface and orbital systems. This environment can also support agency simulation .based acquisition process objectives. The technology development approach is based on the collaborative effort set forth in the VTB's integrating operations. process models, systems and environment models, and cost models as a comprehensive disciplined enterprise analysis environment. Significant emphasis is being placed on adapting root cause from existing Shuttle operations to exploration. Technical challenges include cost model validation, integration of parametric models with discrete event process and systems simulations. and large-scale simulation integration. The enterprise architecture is required for coherent integration of systems models. It will also require a plan for evolution over the life of the program. The proposed technology will produce long-term benefits in support of the NASA objectives for simulation based acquisition, will improve the ability to assess architectural options verses safety/risk for future exploration systems, and will facilitate incorporation of operability as a systems design consideration, reducing overall life cycle cost for future systems. The future of business intelligence of space exploration will focus on the intelligent system-of-systems real-time enterprise. In present business intelligence, a number of technologies that are most relevant to space exploration are experiencing the greatest change. Emerging patterns of set of processes rather than organizational units leading to end-to-end automation is becoming a major objective of enterprise information technology. The cost element is a leading factor of future exploration systems

    Lightning Talk #3 (5 min): Reenvisioning Cataloging and Classification for a LGBT2QIA+ Community Library

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    Abstract When Out On The Shelves, Vancouver’s independent, volunteer-run LGBT2QIA+ library, moved to a new space in 2017, its proximity to the University of British Columbia School of Information sparked a number of projects to revise and overhaul access and description of its materials. This lightning talk features two interrelated projects the speakers led as Master’s students in 2018—the creation of a new shelf classification system and the development of new subject cataloguing guidelines for materials. The work behind our classification system engages with the multiple and overlapping labels of identity and community for the library. Since a shelf order system provides one and only one location for each topic, we were challenged to find a way to make books on identity visible, accessible, and browsable without reasserting a siloed or fractured view of intersectional issues. Some of the features of the resulting classification system remove specificity found in the previous system, and reintroducing this specificity and discoverability was a key concern in the development of a thesaurus and new cataloguing rules. Given the unique context of Out On The Shelves, typical concerns such as interoperability with other library catalogues, scalability of new rules for large collections, and tensions with universal systems were largely irrelevant. With the freedom to create local systems that centered LGBT2QIA+ identities, communities, and information needs, we also attempted greater transparency in the collaborative process of design and preparation for the inevitability of re-design, the possibility that these new solutions should one day be revised or discarded. In this talk, we will discuss these new systems in relation to the previous systems at the library and among a constellation of other approaches we explored. These systems are expected to be perpetually in flux and we are eager to engage in discussion and questions on how they meet the goals of queer libraries

    A Collaborative Systems of Systems Simulation of Urban Air Mobility: Architecture Process and Demonstration of Capabilities

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    Urban Air Mobility (UAM) presents a complex challenge in aviation due to the high degree of innovation required across multiple domains to realize it. From the use of advanced aircraft powered by new technologies, the management of the urban air space to enable high density operations, to the operation of specialized vertidromes serving as a start and end point of the vehicles, the UAM paradigm necessitates a significant departure from aviation as we know it today. In order to understand and assess the many facets of this new paradigm, a Collaborative Agent-Based Simulation is developed to holistically evaluate the system through the modelling of the stakeholders. In this regard, models of vertidrome air-side operations, urban air space management, passenger demand estimation and mode choice, vehicle operator cost and revenues, vehicle maintenance, vehicle allocation, fleet management based on vehicle design performance and mission planning are brought together into a single Collaborative System of Systems Agent-Based Simulation of Urban Air Mobility. Through collaboration, higher fidelity models of each domain can be brought together into a single environment which can then be exploited by all partners, achieving comprehensiveness and fidelity levels not achievable by a single partner. Furthermore, the integration enables the capture of cross-domain effects with ease and allows the domain-specific studies to be evaluated at a holistic level. Agent-Based Simulations were chosen for this collaborative effort as it presents a suitable platform for the modelling of the stakeholders and interactions in accordance with the envisioned concept of operations. This work presents the capabilities of the developed Collaborative System of Systems Agent-based Simulation, the development process and finally a visual demonstration. The objectives of this presentation are: ‱ Detail the development process of the Collaborative System of Systems Agent-Based Simulation ‱ Demonstrate a holistic simulation of UAM built through collaboration of multiple tools/modules such as vertiport and trajectorie
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