Structural design methodology of electro-optical system installation on special mission jet transport aircraft

Author(s):  
Mohammad Ali Vaziri Zanjani ◽  
Abdollah Panahi ◽  
Shahram Yousefi

The research reported in this paper investigated the structural design methodology of equipping a jet aircraft modified for maritime patrol with any type of observation system. The study includes installation feasibility, definition of mounting types (fix/retractable), installation location, airworthiness requirements, design considerations, structural design requirements, and static/dynamic analysis considerations. Due to lack of design publication in this field, this study focuses on methodology of electro-optical sensor installation as a flowchart leading to a road map to equip an aircraft with any type of maritime sensor. For validation of above methodology, a case study for installation of an electro-optical system on a particular jet aircraft with new mission is presented. By comparison of system and aircraft specification based on methodology flowchart, a retractable mounting was chosen. To accomplish a safe installation, an optimal mechanism suitable with aircraft fuselage and required backup structure was designed using reinforced cut out. The design was then analyzed for static and dynamic critical load cases using MSC/NASTRAN software.

2015 ◽  
Vol 66 ◽  
pp. 21-30 ◽  
Author(s):  
Frédéric Segonds ◽  
Fabrice Mantelet ◽  
Julien Nelson ◽  
Stéphane Gaillard

2022 ◽  
pp. 80-103
Author(s):  
Burak Karaduman ◽  
Bentley James Oakes ◽  
Raheleh Eslampanah ◽  
Joachim Denil ◽  
Hans Vangheluwe ◽  
...  

The Internet of Things and its technologies have evolved quickly in recent years. It became an umbrella term for various technologies, embedded devices, smart objects, and web services. Although it has gained maturity, there is still no clear or common definition of references for creating WSN-based IoT systems. In the awareness that creating an omniscient and ideal architecture that can suit all design requirements is not feasible, modular and scalable architecture that supports adding or subtracting components to fit a lot of requirements of various use cases should be provided as a starting point. This chapter discusses such an architecture and reference implementation. The architecture should cover multiple layers, including the cloud, the gateway, and the edges of the target system, which allows monitoring the environment, managing the data, programming the edge nodes and networking model to establish communication between horizontal and vertical embedded devices. In order to exemplify the proposed architecture and reference implementation, a smart irrigation case study is used.


2015 ◽  
Vol 26 (2) ◽  
pp. 288-300 ◽  
Author(s):  
Adappa Chandrashekar Lokesh ◽  
Naranapur Somashekhar Mahesh ◽  
Balakrishna Gowda ◽  
Peter White

Purpose – The purpose of this paper is to present a review of strategy developed by University of Agricultural Sciences, Bangalore in Biofuel Park, Hassan (Government of Karnataka, initiative to develop biofuel programme in India) for promoting sustainable biodiesel production using oil extracted from tree borne oil species. The main aim of this study was to analyse the current strategy, identify the limitations and propose sustainable biodiesel production strategies for rural Karnataka. Design/methodology/approach – The paper presents critical analysis of current Biofuel Park strategy using strength weakness opportunities and threat (SWOT) method. The data for SWOT analysis were collected from Biofuel Park log books, followed by interviews with around 50 associations of biofuel feed stock growers. Further, to evolve sustainable strategies, a case study was carried out at a local village assessing sustainability of biodiesel production and use from four local tree species oil namely; Pongamia pinnata, Azadiractha indica, Madhuca indica and Simarouba glauca. The evolved strategies were brainstormed with local farming community and the deliberations were used to lay a road map for implementing the evolved strategies. Findings – The strategies proposed in the paper would help in sustainability of villages with respect to local energy needs and generate employment. The roadmap proposed would minimise green house gas (GHG) emission compared to Biofuel Park model/strategy and minimise biomass displacement. Originality/value – This paper fulfils a need to study biofuel strategies adopted by government bodies, analyse the same for sustainability and propose alternatives to overcome the limitations of the practiced strategy.


1994 ◽  
Vol 19 ◽  
pp. 77-84 ◽  
Author(s):  
Ezio Leporati ◽  
Mercalli Luca

The snowfall series of Turin, northwest Italy, is one of the longest available for Europe, with daily observations starting in 1784 and continuous since 1788. The unpublished 207 years data set was carefully obtained from original manuscripts and filed on magnetic media. Mean yearly snowfall amount is 48.9 cm showing a high interannual variability (variation coefficient 79%), with about seven snow days from October through April; the maximum amount was measured in winter 1784–85 (233 cm), followed by 1808–9 with 163 cm. Maximum daily amount was on 4 December 1844 with 64 cm. During the whole period a negative trend is exhibited, increasing in the years following 1890. This pattern is confirmed by the Mann-Kendall test. The change derives from regional climate rather than expansion of the urban area. Return periods of yearly maximum snow loads are calculated in order to contribute to the definition of new values for structural design. A case study of heavy snowfall in January 1987 is examined.


2020 ◽  
Vol 26 (3) ◽  
pp. 335-351
Author(s):  
Md. Kamrul Hasan ◽  
Mario Joseph Hayek ◽  
Wallace A. Williams, Jr ◽  
Stephanie Pane-Haden ◽  
Maria Paula Martinez Gelvez

Purpose The purpose of this paper is twofold. First, this paper seeks to formalize a definition of activist entrepreneurship and differentiate it from social entrepreneurship. Second, this paper proposes a model that explains how the storytelling process, in the form of the message and means of communication, influences the activist identity process and consequently the legitimacy of the activist entrepreneur. Design/methodology/approach This paper explains the historical method and offers an overview of the unique case of Madam C.J. Walker and analyzes how she gained legitimacy as an activist entrepreneur by conveying psychological capital (Psycap) concepts in her message and political skill in the means of her communication. The paper also analyzed books being written on her and also letters that were exchanged between herself and her lawyer F.B. Ransom. Findings The authors have found out that Madam Walker used Psycap elements such as self-efficacy, hope, resiliency and optimism as message and elements of political skill such as social astuteness, interpersonal skill, networking ability and apparent sincerity as means to communicate the message toward her followers and built a legitimate social identity where she had won the trust of them. Research limitations/implications The primary limitation of this paper is that it is theoretical in nature and uses only one case study to support the theoretical model. However, when analyzing complex relationships, historical cases offer a wealth of insight to solve the problem at hand. Originality/value By using the elements of the model discussed in the research paper properly, people could create a legitimate identity for themselves where any message they give to their employees, colleagues and sub-ordinates would be viewed as a selfless one and that would increase the chances of their messages or orders being accepted and obeyed by the followers.


2017 ◽  
Vol 3 (1) ◽  
pp. 42-55 ◽  
Author(s):  
Murray Lytle ◽  
Michael Hitch

Purpose The purpose of this paper is to propose the thesis that how an individual views the world – their worldview – is indicative of their acceptance of resource development. A definition of worldview is given and the significance of worldview to cultural and civilizational development is described. A methodology for testing the hypothesis is described and the results of a survey used to collect data are analyzed. At least for the approximately 300 respondents to the survey, there is a correlation between their responses to a series of worldview questions and their acceptance of resource development. Not surprisingly, the correlation becomes stronger as the homogeneity of the respondent group increases. The results of the survey analysis are then compared to a known resource development conflict in a case study to understand the potential significance of the results in a real-world setting. Design/methodology/approach A definition of worldview is given and the significance of worldview to cultural and civilizational development is described and evaluated. A methodology for testing the hypothesis is described and the results of a survey used to collect data are analyzed. Findings At least for the 300 respondents to the survey, there is a correlation between their responses to a series of worldview questions and their acceptance of resource development. The case study indicates that respondents can hold contradictory views depending upon the level of inquiry. Research limitations/implications The sample size is too small to draw any but the most preliminary of conclusions. However, the correlations are high enough to encourage additional work. Practical implications The research may point to a relatively simple means of understanding the level of acceptance of resource development among all parties to a development proposal. This will allow proponents to identify issues early enough to address them in the design and negotiation phases of project development. Social implications Resource developers and residents local to the proposed development are often talking at cross-purposes because the issues are not understood at a deep enough level. Once issues are understood at the deeper level of worldview opportunities for resolution may be identified. Originality/value As far as the researchers are aware this is the only published methodology for quantifying the acceptance of resource development. As identified by the case study, it is possible for a community to reject resource development for reasons that have little to do with resource development either in the particular or in the general.


2016 ◽  
Vol 14 (4) ◽  
pp. 323-333 ◽  
Author(s):  
Siu Loon Hoe

Purpose The purpose of this paper is to identify the key characteristics and propose a working definition of a smart nation. Design/methodology/approach A case study of Singapore through an analysis of the key speeches made by senior Singapore leaders, publicly available government documents and news reports since the launch of the smart nation initiative in December 2014 was carried out. Findings Just like smart cities, the idea of a smart nation is an evolving concept. However, there are some emerging characteristics that define a smart nation. Research limitations/implications The paper provides an initial understanding of the key characteristics and definition of a smart nation at the nascent stage and a foundation for further research on the topic. Originality/value This paper contributes to the existing smart cities and smart nation literature by providing insights to the key characteristics of smart nation and proposing a working definition of the term.


2018 ◽  
Vol 120 (9) ◽  
pp. 2155-2165 ◽  
Author(s):  
Ilija Djekic ◽  
Nikola Tomic ◽  
Nada Smigic ◽  
Bozidar Udovicki ◽  
Gerard Hofland ◽  
...  

Purpose The purpose of this paper is to evaluate the hygienic design of a scalable unit for supercritical carbon dioxide drying of food. Design/methodology/approach For the purpose of this study, a checklist has been developed, covering requirements from sanitary standards and industry-tailored guidelines. Beyond hygienic design, failure mode and effects analysis of the results were performed to assess the potential food safety risks that may arise from failures to hygienic design requirements. Findings The overall score of the hygienic design was 46 percent. This kind of evaluation revealed two types of nonconformities. The first type was related to inadequate sanitary procedures. The second type was associated to design failures. Research limitations/implications The highest risk was designated to problems related to cleaning and sanitation followed by risks associated with the formation of dead zones and biofilms. Practical implications This study provides valuable insight to engineers and food technologists on hygienic design issues. Originality/value Application of a similar methodology was used for evaluating hygienic design of other non-thermal food technologies.


1994 ◽  
Vol 19 ◽  
pp. 77-84
Author(s):  
Ezio Leporati ◽  
Mercalli Luca

The snowfall series of Turin, northwest Italy, is one of the longest available for Europe, with daily observations starting in 1784 and continuous since 1788. The unpublished 207 years data set was carefully obtained from original manuscripts and filed on magnetic media. Mean yearly snowfall amount is 48.9 cm showing a high interannual variability (variation coefficient 79%), with about seven snow days from October through April; the maximum amount was measured in winter 1784–85 (233 cm), followed by 1808–9 with 163 cm. Maximum daily amount was on 4 December 1844 with 64 cm. During the whole period a negative trend is exhibited, increasing in the years following 1890. This pattern is confirmed by the Mann-Kendall test. The change derives from regional climate rather than expansion of the urban area. Return periods of yearly maximum snow loads are calculated in order to contribute to the definition of new values for structural design. A case study of heavy snowfall in January 1987 is examined.


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