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检索条件"主题词=Model Based System Engineering"

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True model-based Requirements (TMBR): Application to an Earth Observation Satellite

True Model-Based Requirements (TMBR): Application to an Eart...

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AIAA Science and Technology Forum and Exposition (AIAA SciTech Forum)

作者： Wachl, Paul Salado, Alejandro Virginia Tech Grado Dept Ind & Syst Engn Blacksburg VA 24061 USA

ISBN: (数字)9781624106095

ISBN: (纸本)9781624106095

The capture of system requirements with accuracy and precision remains a challenge for space systems. There is fundamental reliance within current research efforts on natural language (shall statements), which is inherently ambiguous, and thus unable to capture the problem space accurately and precisely. In this article, we suggest an approach to modeling the requirements that leverages forma modeling and system theoretic construct as opposed to reliance on natural language. The proposed approach, specifically, extends structural and behavioral model elements of the systems modeling Language (SysML) through definition of a solution space in system-theoretic context. We consider a system to be a transformation of inputs into outputs;and as such model the problem space as a required set of transformation of inputs into outputs. The application of the proposed model-based requirements approach is demonstrated for a notional fire detection, Earth observation satellite FireSat.

关键词： Earth Observation Satellite model based system engineering Space systems Satellites Earth Space Environment European Space Agency Electromagnetic Spectrum Satellite Technology Mathematical models

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Multi-Disciplinary Design of a Mid-Range Commercial Transport Aircraft

Multi-Disciplinary Design of a Mid-Range Commercial Transpor...

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AIAA Science and Technology Forum and Exposition (AIAA SciTech Forum)

作者： Rodriguez, Gabino Martinez Fratangelo, David Fregoso, Erik Isaac Kosloske, Triston Kurt, Hasan Schierbrock, Aaron Valderama, David Takahashi, Timothy T. Arizona State Univ Schools Engn Tempe AZ 85281 USA Arizona State Univ Sch Engn Matter Transport & Energy Aerosp & Mech Engn POB 876106 Tempe AZ 85281 USA

ISBN: (数字)9781624106095

ISBN: (纸本)9781624106095

This study presents a carefully optimized, conventionally configured replacement for the B757-200 aircraft. While the B757-200 was originally engineered as a short-to-medium haul airliner with excellent field performance, it has blossomed as an aircraft well suited for North American transcontinental flights, Hawaii flights and "thin" North Atlantic flights. In this study, we seek to provide a design that offers significant efficiency boost over the B757, while balancing customer requirements between a current North American operator (American Airlines) and the B757 European launch customer (British Airways). We optimized the design using a model-based-systems-engineering (MBSE) approach using Phoenix Integration's modelCenter. The final design achieved 15% improvements in efficiency at minimum against current benchmark aircraft, enhanced payload/range capacity, and ready compliance with applicable FAA and EASA regulations.

关键词： Narrow Body Aircraft European Aviation Safety Agency American Airlines model based system engineering Transcontinental Flight Airliner Aerodynamic Performance Control Surfaces High Lift Device Aerodynamic Characteristics

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Pervasive technology investment strategies for space enterprise vision

Pervasive technology investment strategies for space enterpr...

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AIAA Space and Astronautics Forum and Exposition, SPACE 2017

作者： Ewart, Roberta M. 483 N. Aviation Blvd El SegundoCA90245 United States

ISBN: (数字)9781624104831

ISBN: (纸本)9781624104831

There has been great interest in the threat warning sensors and the countermeasures that might be used to ensure the survivability of the USAF Space Enterprise. Less well known are the families of technologies which actually enable the enterprise to "operate through" in a threat environment. This paper will briefly outline key pervasive SEV technologies, why they are important to the vision and how to create the collaboration necessary to advance these technologies. These technologies are common sense investment ideas that are also used in other military and civilian arenas. Examples in the paper include the necessity to invest in software defined radios, advanced low probability of intercept and low probability of detection communication, and advanced inertial measurement units. This paper outlines the policy, process, and lessons for effective development of pervasive space enterprise technologies development. It also discusses collaborations enabling these pervasive technologies to be transitioned. © 2017, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Inertial Measurement Unit Sensor systems Air Force Space Command model based system engineering Space Logistics Paradigms Global Positioning system Non Keplerian Orbit Information Technology Military Operations Electromagnetic Spectrum

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Using a model-based systems engineering (Mbse) variant approach for architecting signal processing in a space-based sensor

Using a model-based systems engineering (Mbse) variant appro...

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Accelerating Space Commerce, Exploration, and New Discovery Conference, ASCEND 2020

作者： Gans, Howard D. Cuellar, Robert L3Harris Technologies MelbourneFL32902 United States

ISBN: (数字)9781624106088

ISBN: (纸本)9781624106088

model-based systems engineering (MBSE) can be used to develop the architecture of a space-based sensor. The process begins with the development of use cases (UCs) of a general system model for a sensor processor which is composed of both hardware and software-based elements. Domain-specific UC’s can then be created and linked to the general level. This process continues through the modeling of variances in system behavior, including activity, sequence and state diagrams. This is done in parallel with the development of structural model instances that represent the configuration of the system for the specific domain being considered. The result is an end-to-end extensible sensor model that can then be applied to analyze the end-to-end signal processing chain. © 2020 The MITRE Corporation. All Rights Reserved.

关键词： Signal Processing Sensor systems model based system engineering Structural modeling Structural Analysis Field Programmable Gate Array Graphics Processing Unit Small Satellites Data Products

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Design and Implementation of Ground PHM Principled Sample Machine for Airborne Fuel Pump based on Three-Dimensional Multiphase Criterion 14

Design and Implementation of Ground PHM Principled Sample Ma...

引用

14th IEEE Global Reliability and Prognostics and Health Management Conference, PHM-Hangzhou 2023

作者： Huang, Songlin Jiao, Xiaoxuan Zhang, Qirui Chen, Jianjun Hu, Fangzhou Yang, Kai Unit 93525 of PLA Shigatse China School of Aeronautical Engineering Air Force Engineering University Xi'an China Unit 93145 of PLA Changzhou China

ISBN: (纸本)9798350301359

In response to the problems of massive heterogeneous data, complex structural hierarchy, and inefficient functional implementation in the design of the ground PHM principled sample machine for airborne fuel pump, based on the three-dimensional multiphase criterion of the PHM system, and guided by the implementation of the PHM function of the airborne fuel pump, analyze the technical route of the design of the ground PHM principled sample machine for airborne fuel pump from three aspects, the modeling design method of the MBSE based airborne fuel pump PHM system, the visualization of PHM system design elements based on knowledge graph, and the real-time optimization based on software and hardware collaborative acceleration. The ground PHM principled sample machine for airborne fuel pump is designed to achieve real-time fault diagnosis and degradation prediction functions of the airborne fuel pump. Through the collaborative optimization design of software and hardware, the accuracy of the calculation results is ensured while achieving 26.32 times acceleration calculation. Provide a systematic reference solution for the engineering application of aircraft PHM system. © 2023 IEEE.

关键词： airborne fuel pump knowledge graph model based system engineering PHM system software and hardware collaboration three-dimensional multiphase criterion

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Developing space vehicle payload commands using a model-based CONOPS

Developing space vehicle payload commands using a model-base...

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AIAA Space and Astronautics Forum and Exposition, 2018

作者： Gans, Howard D. Osaisai, Macaulay Harris Corporation MelbourneFL32902 United States

ISBN: (数字)9781624105753

ISBN: (纸本)9781624105753

A graphical model-based concept of operations (CONOPS) can be used to transform high-level system use cases (UCs) and operational activities into a series of discrete space vehicle payload commands including those which constitute the payload mission deck. This approach begins with a stakeholder’s high-level operational concept (HLOC) and the identification of an ordered progression of UCs to indicate a mission thread. Through stages of functional decomposition, atomic level functions for each configuration item (CI) are identified. The sequence of payload operations become the series of commands the payload must execute during a mission and include the messages which become the payload mission deck. The graphical artifacts generated during the analysis can be presented on the Enhanced OV-5a diagram showing the development of payload commands beginning with the top level UC. © 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Space Vehicle model based system engineering Satellites Operating systems Telemetry Structural Element Shuttle Payloads Astronautics

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EPS-SG operational scenarios and system modelled in CORE 14th

EPS-SG operational scenarios and system modelled in CORE

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14th International Conference on Space Operations, SpaceOps 2016

作者： Perlik, Frank Monteiro, Claudia Garcia EUMETSAT Eumetsat Allee 1 DarmstadtD-64295 Germany Callisto Limitted 4 Rockfield Business Park GloucestershireGL53 0AN United Kingdom

ISBN: (数字)9781624104268

ISBN: (纸本)9781624104268

This paper highlights the benefit of developing the operational scenarios in a system modelled using the CORETM tool. It describes the impact of such a model on the structure, the organisation of the scenarios and the advantages of having both operations and system functionalities described by the same tool in a common model. The paper also discusses how traceability between operational activities and resources from the system can be automatically produced by the tool, thus ensuring that system and Operations teams share the exactly same understanding of Operation implementation and capability of the system. © 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： model based system engineering Ground Station Satellites Ground Segment Antenna Control Unit Operations Management Data Products Closed Loop MetOp SG

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Exploiting pessimism for fault tree completeness 55

Exploiting pessimism for fault tree completeness

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55th AIAA Aerospace Sciences Meeting

作者： Wille, Alexander Holzapfel, Florian Institute of Flight System Dynamics Technische Universität München Garching Germany

ISBN: (数字)9781624104473

ISBN: (纸本)9781624104473

Fault trees and dependency diagrams are standardized analysis methods for identifying possible causes of a system-level failure and breaking down high-level safety requirements. Although completeness of such an analysis is crucial to system safety, no formalized com- pleteness criteria exists. This paper introduces the concept of fault tree pessimism, pro- poses a completeness predicate developed from fault tree pessimism, and elaborates the application for safety requirements validation in quantitative fault tree analysis. It shows how the proposed predicate leads to greatly reduced fault tree validation effort compared to approaches from the state of the art, which are based on importance metrics. © 2017 by Alexander Wille.

关键词： Fault Tree Analysis Data Structures model based system engineering Minimum Equipment List Aircraft systems Industrial Practice Aircraft Operations Military Aviation Aerospace system ARP 4761

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Pervasive technology investment strategies for space enterprise vision II

Pervasive technology investment strategies for space enterpr...

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AIAA Space and Astronautics Forum and Exposition, 2018

作者： Ewart, Roberta M. 483 N. Aviation Blvd El SegundoCA90245 United States

ISBN: (数字)9781624105753

ISBN: (纸本)9781624105753

There has been great interest in the threat warning sensors and the countermeasures that might be used to ensure the survivability of the USAF Space Enterprise. Less well known are the families of technologies which actually enable the enterprise to "operate through" in a threat environment. This paper will briefly outline key pervasive SEV technologies, why they are important to the vision and how to create the collaboration necessary to advance these technologies. These technologies are common sense investment ideas that are also used in other military and civilian arenas. Examples in the paper include the necessity to invest in software defined radios, advanced low probability of intercept and low probability of detection communication, and advanced inertial measurement units. This paper outlines the policy, process, and lessons for effective development of pervasive space enterprise technologies development. It also discusses collaborations enabling these pervasive technologies to be transitioned. © 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

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Decision support model and visualization for assessing environmental phenomena, ecosystem services, policy consequences, and satellite design using earth observation data

Decision support model and visualization for assessing envir...

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Accelerating Space Commerce, Exploration, and New Discovery Conference, ASCEND 2020

作者： Reid, Jack B. Wood, Danielle Media Arts and Sciences Massachusetts Institute of Technology 77 Massachusetts Avenue CambridgeMA02139 United States Media Arts and Sciences & Aeronautics and Astronautics Massachusetts Institute of Technology 77 Massachusetts Avenue CambridgeMA02139 United States

ISBN: (数字)9781624106088

ISBN: (纸本)9781624106088

With the increasing availability of Earth Observation (EO) data has come a commensurate rise in EO applications. To address the dual needs of processing data for applications and designing missions with applications in mind, we present a multi-disciplinary, integrated modeling framework to advance environmental management, policymaking, and observation platform design. This core modeling framework is called Environment-Vulnerability-Decision-Technology (EVDT). EVDT is not the model itself, it is the framework that guides the creation of an integrated model customized to each application with a specific set of stakeholders in mind and designed using systems Architecture. The EVDT framework can be customized to build integrated models specific to a certain application. Individual models in the framework include certain core models (Environment, Vulnerability, Decision, Technology) and optional models such as Public Health which are added when needed for a specific application. The Environment model uses earth science methods to estimate the state of environmental phenomena;The Vulnerability model captures societal impact of environmental changes including ecosystem services;the Decision model captures human behavior and policy consequences;and the Technology model provides tools to design earth observation systems or select among earth observation technologies such as satellites, airborne sensors, and in-situ sensors. The intent in developing this framework and its applications is to lead to the development of a standard to facilitate the re-use of models and the design of future remote observation systems. The presented prototype specifically focuses on two case studies. The first case study considers the dynamics of human and environmental behavior related to the mangrove forests in the Guarat-iba area of Rio de Janeiro. The second case study considers the relevancy of this framework in approaching coronavirus-related public health decisions in Rio de Janeiro, Santi

关键词： Satellites Planets Earth Sciences Sensors Normalized Difference Vegetation Index model based system engineering Earth Observation Satellite Decision Support system Rapid Prototyping Operational Land Imager

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