233 research outputs found

    Tactical Missile Design at The Naval Postgraduate School

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    The article of record as published may be found at http://dx.doi.org/10.2514/6.2010-911410th AIAA Aviation Technology, Integration, and Operations (ATIO) ConferenceA Tactical Missile Track has been an available academic track at The Naval Postgraduate School for nearly three decades. The coursework associated with the track can be taken over a one-year period leading to a masters degree in Mechanical and Aerospace engineering and culminates with tactical missile design as the capstone course. The capstone design course often includes the participation of an industry representative to provide the students with a real-world “system integration” point of view and advise the students throughout the design process. The coursework leading up to the design course consists of fundamental “core” courses that apply to nearly all missile systems as well as a wide range of technical electives ranging from campaign analysis to warhead design and effectiveness. A brief history of the Tactical Missile Track is provided and details associated with the available electives are also presented and discussed to show some of the unique feature of Tactical Missile Design at The Naval Postgraduate School. Finally, examples of past design efforts are also presented

    Counter Aerial UxS Munition Delivery System

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    A Quad, describing CRUSER Seed Research Program funded research.CRUSER Funded ResearchFY22 Funded Research ProposalConsortium for Robotics and Unmanned Systems Education and Research (CRUSER

    Stitching of near-nulled subaperture measurements

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    A metrology system for measuring aspheric test objects by subaperture stitching. A wavefront-measuring gauge having a limited capture range of wavefront shapes collects partially overlapping subaperture measurements over the test object. A variable optical aberrator reshapes the measurement wavefront with between a limited number of the measurements to maintain the measurement wavefront within the capture range of the wavefront-measuring gauge. Various error compensators are incorporated into a stitching operation to manage residual errors associated with the use of the variable optical aberrator

    Justice, development and the land: the social context of Scotland’s energy transition

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    Scotland, like many other countries, is undergoing a transition to renewable energy. This paper discusses the social context within which this transition is taking place and which is conditioning the possibilities for energy development and its effects on people. In particular, the paper explores historically-rooted conflicts relating to land rights and wild land protection, considering these issues and their relationship to energy development in terms of landscape justice (i.e. the principle of fairness in the ways people relate to the landscape and to each other through the landscape). Pursuing a more just settlement between people and landscape is often a matter of understanding problematic pasts and working to overcome their harmful legacies. It is argued that there is an important role for heritage practice in helping to deliver energy development which takes the historical, social and cultural context more fully into account and thereby helps to bring about a more just settlement between people and the landscape

    Ephemeral space

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    The built environment offers resistance and solidity, physical values of mass and volume, weight and load. The building is persistent as an obstacle to our vector of motion, forcing a change in direction, or obscuring our path. While the physical building remains static, its content or programmes are under constant flux. This is most evident in situations of urban regeneration, where spaces are "recovered" and given entirely new programmes. Both of the sites in Kent that this project covers, fit into this category. The project explores the notion that the buildings themselves might exist in a state of flux, stripped of their physical properties and remaining only as delicate echoes. These spatial echoes can be explored as three dimensional moments in time, devoid of their physical boundaries and constraints. This study offers opportunities to re-imagine the spatial configuration and programmatic relationships across all boundaries. Upon entering these ephemeral spaces, the walls and floors become like a veil, as one moves towards them they recede, immaterial and as insubstantial as mist. The book describes a series of views into these captured spaces. Some views are taken from positions impossible to access in the real world, which give us glimpses of these sites as never before seen. Other views take on a more diagrammatic and architectural approach, slicing through the buildings and their context, to expose the sectional relationships between the spaces of the building. The project was realised through the use of a Faro lidar scanner, a device which measures millions of points in three dimensional space using lasers and constructs a colourised point cloud of that space. Many of these individual scan point clouds were stitched together and composited into a single point cloud model. The Ephemeral space project was developed by JJ Brophy and Christopher Settle at the University for the Creative Arts, Canterbury School of Architecture Digital Futures Lab and supported by the Interreg iV a France (Channel) – England project recreate, co- funded by the European regional development Fund

    Association of Insurance Status with Health Outcomes Following Traumatic Injury: Statewide Multicenter Analysis

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    Introduction: Recognizing disparities in definitive care for traumatic injuries created by insurance status may help reduce the higher risk of trauma-related mortality in this population. Our objective was to understand the relationship between patients\u27 insurance status and trauma outcomes. Methods: We collected data on all patients involved in traumatic injury from eight Level I and 15 Level IV trauma centers, and four non-designated hospitals through Arizona State Trauma Registry between January 1, 2008 and December 31, 2011. Of 109,497 records queried, we excluded 29,062 (26.5%) due to missing data on primary payer, sex, race, zip code of residence, injury severity score (ISS), and alcohol or drug use. Of the 80,435 cases analyzed, 13.3% were self-pay, 38.8% were Medicaid, 13% were Medicare, and 35% were private insurance. We evaluated the association between survival and insurance status (private insurance, Medicare, Medicaid, and self-pay) using multiple logistic regression analyses after adjusting for race/ethnicity (White, Black/African American, Hispanic, and American Indian/Alaska Native), age, gender, income, ISS and injury type (penetrating or blunt). Results: The self-pay group was more likely to suffer from penetrating trauma (18.2%) than the privately insured group (6.0%), p\u3c0.0001. There were more non-White (53%) self-pay patients compared to the private insurance group (28.3%), p\u3c0.0001. Additionally, the self-pay group had significantly higher mortality (4.3%) as compared to private insurance (1.9%), p\u3c0.0001. A simple logistic regression revealed higher mortality for self-pay patients (crude OR= 2.32, 95% CI [2.07-2.67]) as well as Medicare patients (crude OR= 2.35, 95% CI [2.54-3.24]) as compared to private insurance. After adjusting for confounding, a multiple logistic regression revealed that mortality was highest for self-pay patients as compared to private insurance (adjusted OR= 2.76, 95% CI [2.30-3.32]). Conclusion: These results demonstrate that after controlling for confounding variables, self-pay patients had a significantly higher risk of mortality following a traumatic injury as compared to any other insurance-type groups. Further research is warranted to understand this finding and possibly decrease the mortality rate in this population

    Compact Pulsed-Power System for Transient Plasma Ignition

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    The article of record as published may be found at http://dx.doi.org10.1109/TPS.2009.2024672The use of a compact solid-state pulse generator and compact igniters for transient plasma ignition in a pulse detonation engine (PDE) is reported and compared with previous results using a pseudospark pulse generator and threaded rod electrode. Transient plasma is attractive as a technology for the ignition of PDEs and other engine applications because it results in reductions in ignition delay and has been shown to ignite leaner mixtures which allows for lower specific fuel consumption, high-repetition rates, high-altitude operation, and reduced NOx emissions. It has been applied effectively to the ignition of PDEs as well as internal combustion engines. Nonequilibrium transient plasma discharges are produced by applying high-voltage nanosecond pulses that generate streamers, which generate radicals and other electronically excited species over a volume. The pulse generator used is in this experiment is capable of delivering 180 mJ into a 200-Ω load, in the form of a 60-kV 12-ns pulse. Combined with transient plasma igniters comparable with traditional spark plugs, the system was successfully tested in a PDE, resulting in similar ignition delays to those previously reported while using a smaller electrode geometry and delivering an order of magnitude less energy.Office of Naval Researc

    EDNER+: final report

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