System of systems oriented flight vehicle conceptual design: Perspectives and progresses

Liu, Hu; Tian, Yajie; Gao, Yuan; Bai, Jinpeng; Zheng, Jiang'an

doi:10.1016/j.cja.2015.04.017

Cited by 25 publications

(17 citation statements)

References 48 publications

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“…A traditional application of SoS analyses can be often found in the acquisition process of new aeronautical products, and its main objective is to help customers, like for example airlines and military, to improve the allocation of resources as well as the configuration of product networks (Liu et al, 2015). Further examples can be found in transportation, healthcare organization, and space exploration, and more specifically, a typical SoS is expected to be comprised of various systems or "assets" with different sets of capabilities that are used simultaneously in order to achieve a higher level of functionality.…”

Section: Design Optimization Of Unmanned Aerial Vehiclesmentioning

confidence: 99%

Design Optimization of Unmanned Aerial Vehicles : A System of Systems Approach

Παπαγεωργίου

2019

Linköping Studies in Science and Technology. Dissertations

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Over the last years, Unmanned Aerial Vehicles (UAVs) have gradually become a more efficient alternative to manned aircraft, and at present, they are being deployed in a broad spectrum of both military as well as civilian missions. This has led to an unprecedented market expansion with new challenges for the aeronautical industry, and as a result, it has created a need to implement the latest design tools in order to achieve faster idea-to-market times and higher product performance. As a complex engineering product, UAVs are comprised of numerous subsystems with intricate synergies and hidden dependencies. To this end, Multidisciplinary Design Optimization (MDO) is a method that can identify systems with better performance through the concurrent consideration of several engineering disciplines under a common framework. Nevertheless, there are still many limitations in MDO, and to this date, some of the most critical gaps can be found in the disciplinary modeling, in the analysis capabilities, and in the organizational integration of the method. As an aeronautical product, UAVs are also expected to work together with other systems and to perform in various operating environments. In this respect, System of Systems (SoS) models enable the exploration of design interactions in various missions, and hence, they allow decision makers to identify capabilities that are beyond those of each individual system. As expected, this significantly more complex formulation raises new challenges regarding the decomposition of the problem, while at the same time, it sets further requirements in terms of analyses and mission simulation. In this light, this thesis focuses on the design optimization of UAVs by enhancing the current MDO capabilities and by exploring the use of SoS models. Two literature reviews serve as the basis for identifying the gaps and trends in the field, and in turn, five case studies try to address them by proposing a set of expansions. On the whole, the problem is approached from a technical as well as an organizational point of view, and thus, this research aims to propose solutions that can lead to better performance and that are also meaningful to the Product Development Process (PDP). Having established the above foundation, this work delves firstly into MDO, and more specifically, it presents a framework that has been enhanced with further system models and analysis capabilities, efficient computing solutions, and data visualization tools. At a secondary level, this work addresses the topic of SoS, and in particular, it presents a multi-level decomposition strategy, multi-fidelity disciplinary models, and a mission simulation module. Overall, this thesis presents quantitative data which aim to illustrate the benefits of design optimization on the performance of UAVs, and it concludes with a qualitative assessment of the effects that the proposed methods and tools can have on both the PDP and the organization. v vi This Ph.D. project was carried out at the division of Machine Design of Linköping Universi...

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Section: Design Optimization Of Unmanned Aerial Vehiclesmentioning

confidence: 99%

Design Optimization of Unmanned Aerial Vehicles : A System of Systems Approach

Παπαγεωργίου

2019

Linköping Studies in Science and Technology. Dissertations

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“…The CN measure is defined as the number of common nodes between node x and node y as shown in Equation (2). This measure is created based on the hy-pothesis that the more airports two nodes have in common, the more likely they are to be connected.…”

Section: ) Shortest Path (Sp)mentioning

confidence: 99%

“…In terms of advantages to industry, accurate and concrete forecasting of flight demands, including passenger fluctuation, will allow airlines to efficiently plan the frequency of flights, select the appropriate size of aircrafts, and optimize flight plans for each airport. Additionally, a forecast of this type may assist aircraft manufacturers in the design of future development plans [2]. The results of network predictions, such as the frequency of flights and the geographic distances traveled, are environmentally relevant since this data can be used to forecast CO 2 emission [3].…”

Section: Introductionmentioning

confidence: 99%

A Basic Study of the Forecast of Air Transportation Networks Using Different Forecasting Methods

Osawa¹,

Shirayama²

2017

JDAIP

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This research applies network structuring theories to the aviation domain and predicts aviation network growth, considering a flight connection between airports as a link between nodes. Our link prediction approach is based on network structure information, and to improve prediction accuracy, it is necessary to estimate the mechanism of aviation network growth. This research critically evaluates the prediction accuracy of two methods: the receiver operating characteristic curve method (ROC) and the logistic regression method. We propose a four-step method to evaluate the relative predictive accuracy among different link prediction methods. A case study of US aviation networks indicated that the ROC method provided better prediction accuracy compared with the logistic regression method. This result suggests that tuning of the prediction distribution and the regression model coefficients can further improve the accuracy of the logistic regression method.

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“…SoS is used in the sense according to the definition by [L. Hu et al, 2015] or [Maier, 1998] (for further explanation see Section 4.1.1).…”

Section: Remarksmentioning

confidence: 99%

“…The system (of interest) operation may require some kind of interaction with enabling systems (see [ISO 15288, 2008]). If these different systems are composed together, enabling new functionality or higher performance (of already system-inherent functions), the term Systems of Systems (SoS) is used [L. Hu et al, 2015]. Typical SoS applications favour of the fusion of information from different domains; examples include defence systems (mainly information fusion), multi-vehicle missions scenarios [Roberts et al, 2016] or smart electric power networks (information and energy fusion) .…”

Section: Inter-system Relationshipsmentioning

confidence: 99%

Aircraft Systems Conceptual Design : An object-oriented approach from <element> to <aircraft>

Staack¹

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Aircraft Conceptual Design (ACD) is facing new challenges on the way to enhanced fidelity level required in, nowadays complex, system design. The challenge during this early design phase is the use of higher-fidelity methods typically applied in later development stages. Integration of models and simulations to enhance analysis capability while maintaining a streamlined, transparent, and low cost (low effort regarding task time and workforce) work process is therefore required.In this thesis, the use of object-oriented KBE methods to enable an early integration of simulation models, based on incomplete data, is presented. Before this, careful investigations of modelling and simulation approaches of multi-domain systems are carried out, and their use in the ACD phase is examined regarding the efficiency between effort and result accuracy. A central, parametric information model approach to make this possible is presented. By the means of the extended use of XML, XSD and XSLT, domain-specific architectural models can be translated from this dataset, supporting a direct CAD domain integration and automated model creation.Modelling systems as graph networks is a simple approach for unified modelling in the conceptual design stage. Based on this theory, the similarity of different modelling approaches like Dependency Structure Matrix (DSM), MDDSM, or Channel-Agency Networks is shown. Using object-oriented programming, all these and more aspects such as e.g. Fault Tree Analysis (FTA) can be handled globally as one graph set.Based on the outcomes of the theoretical part, the development of a conceptual aircraft design framework is described. Backed by a central XML-based namespace, this framework integrates a complete CAD environment to ensure an appropriate environment for the geometric domain modelling. In addition, the use of KBE for automated simulation i model integration is exemplified by a hydraulic aircraft flight control system (FCS) simulation model. In conclusion, an example of multiaspect modelling using object-oriented handling of a graph network is shown. For future scenarios, unified modelling and semantic approaches are mentioned. ii Populärvetenskaplig SammanfattningMed nya, mer komplexa och mer integrerade flygplansgrundsystem står konceptutvärderingsfasen (ACD) inför nya utmaningar. Multidisciplinärt, anpassningsförmåga, konstruktionsautomation, förbättrad analysnoggrannhet och modellbaserad integrerad utveckling (MBSE) är några nyckelord. I denna avhandling diskuterats användning av objektorienterade Knowledge Based Engineering-(KBE) metoder i konceptutvärder-ingsfasen som möjliggör en tidig integration av simuleringsmodeller baserade på ofullständiga designuppgifter. Denna integration av modeller och simulering ska leda till en ökad analyskapacitet och samtidigt bibehålla en strömlinjeformad, transparent och snabbt arbetsprocess.I avhandlingens teoretiska del behandlas universella modelleringsmetoder (som DSM och Channel-Agency Nätverk) och simuleringsstrategier. Dessutom analyseras och bes...

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System of systems oriented flight vehicle conceptual design: Perspectives and progresses

Cited by 25 publications

References 48 publications

Design Optimization of Unmanned Aerial Vehicles : A System of Systems Approach

Design Optimization of Unmanned Aerial Vehicles : A System of Systems Approach

A Basic Study of the Forecast of Air Transportation Networks Using Different Forecasting Methods

Aircraft Systems Conceptual Design : An object-oriented approach from <element> to <aircraft>

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