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1 – 10 of over 10000
Article
Publication date: 22 November 2011

Markus Kintscher, Martin Wiedemann, Hans Peter Monner, Olaf Heintze and Timo Kühn

The purpose of this paper is to describe the pre‐design and sizing of a smart leading edge section which is developed in the project SADE (Smart High Lift Devices for Next…

1248

Abstract

Purpose

The purpose of this paper is to describe the pre‐design and sizing of a smart leading edge section which is developed in the project SADE (Smart High Lift Devices for Next Generation Wings), which is part of the seventh framework program of the EU.

Design/methodology/approach

The development of morphing technologies in SADE concentrates on the leading and trailing edge high‐lift devices. At the leading edge a smart gap and step‐less droop nose device is developed. For the landing flap a smart trailing edge of the flap is in the focus of the research activities. The main path in SADE follows the development of the leading edge section and the subsequent wind tunnel testing of a five meter span full‐scale section with a chord length of three meters in the wind tunnel T‐101 at the Russian central aero‐hydrodynamic institute (TsAGI) in Moscow.

Findings

The presented paper gives an overview over the desired performance and requirements of a smart leading edge device, its aerodynamic design for the wind tunnel tests and the structural pre‐design and sizing of the full‐scale leading edge section which will be tested in the wind tunnel.

Originality/value

SADE aims at a major step forward in the development and evaluation of the potential of morphing airframe technologies.

Details

International Journal of Structural Integrity, vol. 2 no. 4
Type: Research Article
ISSN: 1757-9864

Keywords

Article
Publication date: 4 July 2016

Velaphi Msomi and Graeme John Oliver

This article reports on the possibility of using nickel titanium shape memory alloy (NiTi SMA) plates rather than NiTi SMA wire for actuation application in the aerospace…

Abstract

Purpose

This article reports on the possibility of using nickel titanium shape memory alloy (NiTi SMA) plates rather than NiTi SMA wire for actuation application in the aerospace industries.

Design/methodology/approach

A scaled-down model of smart aileron was constructed based on NiTi SMA plate and aluminium plate. Prior to the manufacturing process, NiTi SMA plates had to be trained to suit our application. The leading edge was constructed using trained NiTi SMA plates, whereas the trailing edge was constructed using aluminium plates. Pop rivets were used in joining the parts or in the construction of the smart aileron, and riveting was preferred as it is mostly used in the aerospace industry for surface construction. The constructed smart aileron was tested for vertical upward and downward deflection using heat application, and the deflection was measured using deflection transducer. The heat was sourced from heater mat kits that were laminated inside the smart aileron. The temperature and the deflection data were recorded and analyzed.

Findings

It was found that NiTi SMA plates could give a deflection on the trailing edge of the smart aileron. The current maximum deflection was found to be 3 mm, which corresponds to aileron rotation of about 0.57 degrees.

Originality/value

The paper presents a hinge-less alternative in bringing the rolling motion of the flight. The constructed model of smart aileron can be used to replace the existing aileron, which is activated through hydraulic systems. So, the newly constructed smart aileron can be used with the benefit of reducing weight, because it does not use the hydraulic systems like the existing one.

Details

Journal of Engineering, Design and Technology, vol. 14 no. 3
Type: Research Article
ISSN: 1726-0531

Keywords

Article
Publication date: 7 March 2016

Srinivas Vasista, Alessandro De Gaspari, Sergio Ricci, Johannes Riemenschneider, Hans Peter Monner and Bram van de Kamp

The purpose of this paper is to provide an overview of the design and experimental work of compliant wing and wingtip morphing devices conducted within the EU FP7 project NOVEMOR…

1107

Abstract

Purpose

The purpose of this paper is to provide an overview of the design and experimental work of compliant wing and wingtip morphing devices conducted within the EU FP7 project NOVEMOR and to demonstrate that the optimization tools developed can be used to synthesize compliant morphing devices.

Design/methodology/approach

The compliant morphing devices were “designed-through-optimization”, with the optimization algorithms including Simplex optimization for composite compliant skin design, aerodynamic shape optimization able to take into account the structural behaviour of the morphing skin, continuum-based and load path representation topology optimization methods and multi-objective optimization coupled with genetic algorithm for compliant internal substructure design. Low-speed subsonic wind tunnel testing was performed as an effective means of demonstrating proof-of-concept.

Findings

It was found that the optimization tools could be successfully implemented in the manufacture and testing stage. Preliminary insight into the performance of the compliant structure has been made during the first wind tunnel tests.

Practical implications

The tools in this work further the development of morphing structures, which when implemented in aircraft have potential implications to environmentally friendlier aircrafts.

Originality/value

The key innovations in this paper include the development of a composite skin optimization tool for the design of highly 3D morphing wings and its ensuing manufacture process; the development of a continuum-based topology optimization tool for shape control design of compliant mechanisms considering the stiffness and displacement functions; the use of a superelastic material for the compliant mechanism; and wind tunnel validation of morphing wing devices based on compliant structure technology.

Details

Aircraft Engineering and Aerospace Technology: An International Journal, vol. 88 no. 2
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 7 June 2019

Shuyang Li, Guo Chao Peng and Fei Xing

Big data is a key component to realise the vision of smart factories, but the implementation and usage of big data analytical tools in the smart factory context can be fraught…

1302

Abstract

Purpose

Big data is a key component to realise the vision of smart factories, but the implementation and usage of big data analytical tools in the smart factory context can be fraught with challenges and difficulties. The purpose of this paper is to identify potential barriers that hinder organisations from applying big data solutions in their smart factory initiatives, as well as to explore causal relationships between these barriers.

Design/methodology/approach

The study followed an inductive and exploratory nature. Ten in-depth semi-structured interviews were conducted with a group of highly experienced SAP consultants and project managers. The qualitative data collected were then systematically analysed by using a thematic analysis approach.

Findings

A comprehensive set of barriers affecting the implementation of big data solutions in smart factories had been identified and divided into individual, organisational and technological categories. An empirical framework was also developed to highlight the emerged inter-relationships between these barriers.

Originality/value

This study built on and extended existing knowledge and theories on smart factory, big data and information systems research. Its findings can also raise awareness of business managers regarding the complexity and difficulties for embedding big data tools in smart factories, and so assist them in strategic planning and decision making.

Details

Industrial Management & Data Systems, vol. 119 no. 5
Type: Research Article
ISSN: 0263-5577

Keywords

Article
Publication date: 22 November 2011

Christopher York

The purpose of this paper is to demonstrate new design concepts for 24 classes of laminate, which have been derived as part of an ongoing study on the development of a unified…

Abstract

Purpose

The purpose of this paper is to demonstrate new design concepts for 24 classes of laminate, which have been derived as part of an ongoing study on the development of a unified approach to the characterization of coupled laminates. The paper presents a description of each class of coupled laminate.

Design/methodology/approach

The paper gives an overview of the desired performance and requirements of a smart leading edge device, its aerodynamic design for the wind tunnel tests and the structural pre‐design and sizing of the full‐scale leading edge section which will be tested in the wind tunnel.

Findings

Coupled laminates have potential applications in the design of aero‐elastic compliant rotor blades or aircraft wing structures, by introducing tailored extension‐twist and/or shear‐extension coupling at the laminate level; or in the design of thermally activated morphing structures, by exploiting more complex coupling behaviour.

Practical implications

These laminates contain standard cross‐ply and/or angle‐ply combinations, although double angle‐ply laminates are also considered, and correspond to any standard fibre/matrix system with a constant ply thickness throughout.

Originality/value

The vast majority of the laminate described possess coupling behaviour not previously identified in the literature.

Article
Publication date: 1 February 1996

Philip R. Harris

In transitioning to the 21st Century, the proces of planetisation is leading to the development of a world culture. With the landing of humans on the Moon in 1969, astronauts…

Abstract

In transitioning to the 21st Century, the proces of planetisation is leading to the development of a world culture. With the landing of humans on the Moon in 1969, astronauts provided us with stunning pictures of our Earth as seen from outer space. The view challenges us to revise our images of our species — who are we as a human family? Space communication satellites and remote sensing technologies help us to appreciate our planet's resources, as well as its environmental and ecological problems. All this contributes, along with advances in telecommunications and mass transportation, to the breaking down of national borders and cultures and to the emergence of a global, information‐oriented culture. While this happens at the macro level, counterforces are at work that are evident in global tribalism and regression locally to “ethnic cleansing” of people who are different. Despite the latter negative trends, humanity's main‐stream is beginning to appreciate that our common survival and satisfaction of our universal needs and concerns are linked to other species and systems, so we should, as far as feasible protect our world and all its inhabitants. In contemplating the evolution and future of humans, the scientist/philosopher, Tielard de Chardin, described planetisation as a convergence of phenomenon such as, increased consciousness and homogenisation — people are beginning to realise their interdependence on each other, as well as upon all life in our universe.

Details

Equal Opportunities International, vol. 15 no. 2
Type: Research Article
ISSN: 0261-0159

Article
Publication date: 18 December 2020

Hamid Reza Ovesy, Ali Gharibi and Reza Khaki

This study aims to develop a new correlation method for prediction of in-flight wings deflections by integration of the experimental ground tests with computational fluid dynamics…

Abstract

Purpose

This study aims to develop a new correlation method for prediction of in-flight wings deflections by integration of the experimental ground tests with computational fluid dynamics (CFD) analysis.

Design/methodology/approach

The ground test results are implemented in the curve fitting process to determine deflections at 66 specific points (SPs) on the front and rear wing torque box. By using the obtained deflections and the corresponding applied loads, an experimental deflection equation (EDE) for each point is established through the Castigliano’s theorem. The CFD aerodynamic loads of typical aircraft, which have been obtained earlier by the authors, are once again used in the current research. The total applied loads to each part are achieved via summation of inertia and aerodynamic loads. The obtained loads are transformed to the equivalent concentrated loads at the SPs. By substituting the concentrated load values in the EDEs, the SPs deflections are achieved for mentioned flight conditions. The resulted deflections and the corresponding input flight parameters, i.e. M and α, are incorporated into a linear regression method for development of the appropriate in-flight deflection equations (IFDEs). The validity of IFDEs is approved by comparing IFDEs’ deflections with the corresponding ones calculated through EDEs for different flight conditions.

Findings

As an alternative approach to the fairly expensive flight tests, the IFDEs can be used to predict the in-flight wing deflections with comparable degree of accuracy.

Originality/value

Prediction of actual wing deflections distributions without flight tests execution at any given flight condition.

Details

Aircraft Engineering and Aerospace Technology, vol. 93 no. 1
Type: Research Article
ISSN: 1748-8842

Keywords

Book part
Publication date: 14 December 2023

Filippo Marchesani

This chapter focuses on the competitive outcomes of present-day smart cities. It explores how cities can leverage economic and internal advancements to gain a competitive edge

Abstract

This chapter focuses on the competitive outcomes of present-day smart cities. It explores how cities can leverage economic and internal advancements to gain a competitive edge over other cities, and attract and retain both internal and external users. In the 21st century, cities engage in a global competition to attract citizens and businesses alike. The attractiveness and competitiveness of cities are directly linked to their ability to offer essential services that support growth opportunities, build economic value, and establish a competitive differentiation. Cities with advanced and innovative environments are more likely to maintain leading positions in an increasingly globalized world. Building upon the previous discussions on urban and economic outcomes, this chapter sheds light on the competitive outcomes of smart cities and the implications of global competition and city attractiveness for internal and external users. This chapter begins by examining the role of marketing innovation and internationalization in driving smart city development and how urban ecosystems and digital technologies can enhance city attractiveness. It emphasizes the importance of being a smart destination for both internal and external users and how it can empower and shape interactions with citizens, talent, companies, and tourists. Additionally, this chapter analyzes the geographical differences in smart city strategies and explores the competitive landscape of smart cities within and across nations. Finally, it discusses the limitations of competitive urbanism, along with the challenges and future prospects of smart city development. This analysis is supported by data and published works from international journals. Overall, this chapter aims to comprehensively understand how cities can leverage smart technology and strategies to enhance their national and global positioning.

Book part
Publication date: 31 December 2010

The following is an introductory profile of the fastest growing firms over the three-year period of the study listed by corporate reputation ranking order. The business activities…

Abstract

The following is an introductory profile of the fastest growing firms over the three-year period of the study listed by corporate reputation ranking order. The business activities in which the firms are engaged are outlined to provide background information for the reader.

Details

Reputation Building, Website Disclosure and the Case of Intellectual Capital
Type: Book
ISBN: 978-0-85724-506-9

Article
Publication date: 8 November 2019

Pulkit Tiwari, P. Vigneswara Ilavarasan and Sushil Punia

The purpose of this paper is to provide a systematic literature review on the technological aspects of smart cities and to give insights about current trends, sources of research…

Abstract

Purpose

The purpose of this paper is to provide a systematic literature review on the technological aspects of smart cities and to give insights about current trends, sources of research, contributing authors and countries. It is required to understand technical concepts like information technology, big data analytics, Internet of Things and blockchain needed to implement smart city models successfully.

Design/methodology/approach

The data were collected from the Scopus database, and analysis techniques like bibliometric analysis, network analysis and content analysis were used to obtain research trends, publications growth, top contributing authors and nations in the domain of smart cities. Also, these analytical techniques identified various fields within the literature on smart cities and supported to design a conceptual framework for Industry 4.0 adoption in a smart city.

Findings

The bibliometric analysis shows that research publications have increased significantly over the last couple of years. It has found that developing countries like China is leading the research on smart cities. The network analytics and article classification identified six domains within the literature on smart cities. A conceptual framework for the smart city has proposed for the successful implementation of Industry 4.0 technologies.

Originality/value

This paper explores the role of Industry 4.0 technologies in smart cities. The bibliometric data on publications from the year 2013 to 2018 were used and investigated by using advanced analytical techniques. The paper reviewS key technical concepts for the successful execution of a smart city model. It also gives an idea about various technical considerations required for the implementation of the smart city model through a conceptual framework.

Details

Benchmarking: An International Journal, vol. 28 no. 5
Type: Research Article
ISSN: 1463-5771

Keywords

1 – 10 of over 10000