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Article
Publication date: 6 April 2022

Leonardo Murilo Nepomuceno, Roberto Gil Annes da Silva, Alejandro Sobron, Petter Krus and David Lundström

While computational methods are prevalent in aircraft conceptual design, recent advances in mechatronics and manufacturing are lowering the cost of practical experiments…

129

Abstract

Purpose

While computational methods are prevalent in aircraft conceptual design, recent advances in mechatronics and manufacturing are lowering the cost of practical experiments. Focussing on a relatively simple property, the lift curve, this study aims to increase understanding of how basic aerodynamic characteristics of a complex stealth configuration can be estimated experimentally using low-cost equipment, rapid prototyping methods and remotely piloted aircraft.

Design/methodology/approach

Lift curve estimates are obtained from a wind tunnel test of a three-dimensional-printed, 3.8%-scale model of a generic fighter and from flight testing a 14%-scale demonstrator using both a simple and a more advanced identification technique based on neural networks. These results are compared to a computational fluid dynamics study, a panel method and a straightforward, theoretical approach based on radical geometry simplifications.

Findings

Besides a good agreement in the linear region, discrepancies at high angles of attack reveal the shortcomings of each method. The remotely piloted model manages to provide consistent results beyond the physical limitations of the wind tunnel although it seems limited by instrumentation capabilities and unmodelled thrust effects.

Practical implications

Physical models can, even though low-cost experiments, expand the capabilities of other aerodynamic tools and contribute to reducing uncertainty when other estimations diverge.

Originality/value

This study highlights the limitations of commonly used aerodynamic methods and shows how low-cost prototyping and testing can complement or validate other estimations in the early study of a complex configuration.

Details

Aircraft Engineering and Aerospace Technology, vol. 94 no. 8
Type: Research Article
ISSN: 1748-8842

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Article
Publication date: 4 May 2012

Christopher Jouannet, Patrick Berry, Tomas Melin, Kristian Amadori, David Lundström and Ingo Staack

The purpose of this paper is to present the latest subscale demonstrator aircraft developed at Linköping University. It has been built as part of a study initiated by the Swedish…

1051

Abstract

Purpose

The purpose of this paper is to present the latest subscale demonstrator aircraft developed at Linköping University. It has been built as part of a study initiated by the Swedish Material Board (FMV) on a Generic Future Fighter aircraft. The paper will cover different aspects of the performed work: from paper study realised by SAAB to the first flight of the scaled demonstrator. The intention of the paper is to describe what has been realised and explain how the work is may be used to fit within aircraft conceptual design.

Design/methodology/approach

The approach has been to address the challenges proposed by the customer of the demonstrator, how to design, manufacture and operate a scaled demonstrator of an aircraft study in conceptual design within five months. Similar research projects have been reviewed in order to perform the current work.

Findings

The results obtained so far have led to new questions. In particular, the project indicated that more research is needed within the area of subscale flight testing for usage in aircraft conceptual design, since a scaled demonstrator is likely to answer some questions but will probably open up new ones.

Research limitations/implications

The current research is just in its infancy and does not bring any final conclusion but does, however, offer several guidelines for future works. Since the aircraft study was an early phase concept study, not much data are available for validation or comparison. Therefore, the paper is not presenting new methods or general conclusions.

Practical implications

Results from a conceptual aircraft study and a realisation of a scaled prototype are presented, which show that scaled flight testing may be used with some restriction in conceptual design.

Originality/value

The value of this paper is to show that universities can be involved in prototype development and can work in close collaboration with industries to address issues and solutions within aircraft conceptual design.

Details

Aircraft Engineering and Aerospace Technology, vol. 84 no. 3
Type: Research Article
ISSN: 0002-2667

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Available. Content available
Article
Publication date: 4 May 2012

Askin T. Isikveren

387

Abstract

Details

Aircraft Engineering and Aerospace Technology, vol. 84 no. 3
Type: Research Article
ISSN: 0002-2667

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Article
Publication date: 1 January 1991

John B. Ford, Michael S. LaTour and William J. Lundstrom

Uses an upscale female sample to extend previous research onwomen′s perceptions of their role portrayal in advertising media.Indicates that serious disenchantment with perceived…

3043

Abstract

Uses an upscale female sample to extend previous research on women′s perceptions of their role portrayal in advertising media. Indicates that serious disenchantment with perceived portrayal of women still exists for this important group of consumers. Measures various attitudinal, company image, and purchase intention responses in addition to salient demographic and role orientation variables. Discusses the implications for advertisers using female models in their advertisements.

Details

Journal of Consumer Marketing, vol. 8 no. 1
Type: Research Article
ISSN: 0736-3761

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Article
Publication date: 6 March 2020

Markus Lundström

This study aims to probe the ambiguity of posthuman heroism by revisiting the remarkable story of the children's literature icon Pippi Longstocking. The purpose is to explore with…

359

Abstract

Purpose

This study aims to probe the ambiguity of posthuman heroism by revisiting the remarkable story of the children's literature icon Pippi Longstocking. The purpose is to explore with Pippi a non-anthropocentric living in the more-than-human world.

Design/methodology/approach

The study’s critical posthumanist analysis is empirically based on the American English translation of the Pippi book trilogy from the 1950s, as well as the Swedish TV series produced in 1969.

Findings

Pippi's posthuman power serves to conceptualize a move beyond the anthropocentric savior complex. The analysis exhibits a power used to defy, mock and resist authority, but always with the purpose of securing agency for Pippi and her community. This power to, rather than power over, becomes a creative force that builds a posthuman community between inorganic matter, human and nonhuman animals.

Originality/value

Instead of showcasing a heroism to save our planet, Pippi animates how to relate differently to the more-than-human world. She is a productive fantasy, an idea materialized – a posthuman figuration – that extends the notion of community, opens up the demos and forcefully challenges anthropocentric normativity.

Details

International Journal of Sociology and Social Policy, vol. 41 no. 3/4
Type: Research Article
ISSN: 0144-333X

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Article
Publication date: 9 March 2012

Demi Patsios, Paddy Hillyard, Sarah Machniewski, Francesca Lundström and David Taylor

This paper attempts to assess the consequences of the existing and unfolding inequalities in older age in Northern Ireland (NI) and the Republic of Ireland (RoI).

214

Abstract

Purpose

This paper attempts to assess the consequences of the existing and unfolding inequalities in older age in Northern Ireland (NI) and the Republic of Ireland (RoI).

Design/methodology/approach

The research involved both quantitative and qualitative methods including focus groups and analysis of existing data on social exclusion and poverty in NI and RoI.

Findings

The analysis on publicly available data in the north and south of Ireland revealed few comparable measures on poverty and social exclusion. The study was, however, able to establish key pre‐ and intra‐recession differences between older people in both jurisdictions. The qualitative analysis (focus groups with older people, online surveys with financial advisors) detailed the similarities and differences in the impact of the recession in north and south.

Originality/value

This paper reports on the first systematic, comparative study into the impact of the recession on older people in NI and RoI. The paper also makes recommendations for improving data collection on measures which would allow policy makers and researchers to examine the current and future impact of the recession on the living standards and wellbeing of older people.

Details

Quality in Ageing and Older Adults, vol. 13 no. 1
Type: Research Article
ISSN: 1471-7794

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Article
Publication date: 1 July 1985

Steven Lysonski

Provides an empirical view of sexism in British magazine advertising in order to determine the frequency of role portrayals and the extent to which they have become more…

2282

Abstract

Provides an empirical view of sexism in British magazine advertising in order to determine the frequency of role portrayals and the extent to which they have become more progressive. Examines various categories of magazines for both men and women in order to detect any shifts in sexual stereotyping. Remarks that results show some change in portrayals from 1976 to 1982–1983, although these shifts were not dramatic. Concludes, however, that stereotypical images of men and women still persist in British magazines.

Details

European Journal of Marketing, vol. 19 no. 7
Type: Research Article
ISSN: 0309-0566

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Book part
Publication date: 10 November 2023

Robert Wapshott and Oliver Mallett

This chapter argues for the unrealised potential value of methodologies derived from a critical realist research philosophy in the field of entrepreneurship studies. Critical…

Abstract

This chapter argues for the unrealised potential value of methodologies derived from a critical realist research philosophy in the field of entrepreneurship studies. Critical realism offers methodological alternatives that, through the generation of new insights into social relations, social structures and key generative mechanisms, can offer significant value for entrepreneurship researchers. Reflecting on their personal experiences researching from a critical realist perspective in entrepreneurship studies, the authors explore how this research philosophy can extend the field of inquiry and promote new perspectives. The chapter explores this in relation to the specific topic of enterprise policy and demystifies some aspects of critical realism by setting out some of its basic principles to demonstrate their potential to develop new insights. Further, this approach can create significant impact, for example, through the development of effective interventions. The chapter concludes by identifying implications for enterprise policy development, implementation and evaluation.

Details

Nurturing Modalities of Inquiry in Entrepreneurship Research: Seeing the World Through the Eyes of Those Who Research
Type: Book
ISBN: 978-1-80262-186-0

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Article
Publication date: 1 March 1987

A. Tansu Barker

The attitudes and perceptions of New Zealanders toward current consumerism issues are outlined and compared with four other countries. Many of the opinions expressed are critical…

387

Abstract

The attitudes and perceptions of New Zealanders toward current consumerism issues are outlined and compared with four other countries. Many of the opinions expressed are critical of the existing practices of business and appear to be common in the other four countries. The theory of consumer product life cycle suggesting the development of national consumer movements was not supported by the data obtained in New Zealand.

Details

International Marketing Review, vol. 4 no. 3
Type: Research Article
ISSN: 0265-1335

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Book part
Publication date: 7 December 2023

Alexander Mitterle

Within the last two decades, entrepreneurship education has become institutionalized in Germany. It is offered as a stand-alone program or as part of a business degree, combining…

Abstract

Within the last two decades, entrepreneurship education has become institutionalized in Germany. It is offered as a stand-alone program or as part of a business degree, combining academic knowledge, practical skills, and personal development to enhance the entrepreneurial success of university graduates. While entrepreneurship education has experienced similar growth worldwide, its emergence in Germany is closely tied to the country’s political and economic developments. The significance of entrepreneurship education for a thriving entrepreneurial ecosystem and contemporary economic policy has been instrumental in advancing its academic recognition. This chapter provides a historical analysis of the academization of entrepreneurship in Germany. It explores the recursive and often idiosyncratic processes involving state and financial institutions, companies, and universities that have created, respecified, and mutually reinforced a subdiscipline and field of study. Academic entrepreneurship knowledge successively not only became relevant for starting a business but also for employment within the entrepreneurial infrastructure and beyond. This chapter follows a chronological order, highlighting three key stages in the academization of entrepreneurship education. First, the academic, financial, and political roots (I) of entrepreneurship up until the 1970s. Second, it explores the transformation (II) of entrepreneurship into a viable policy alternative and the challenges faced in establishing complementary research and education in higher education institutions during the 1980s. Finally, it sketches the institutionalization (III) of entrepreneurship as a central driver of government economic policy, allowing for the late bloom of entrepreneurship education and research at universities around the turn of the millennium.

Details

How Universities Transform Occupations and Work in the 21st Century: The Academization of German and American Economies
Type: Book
ISBN: 978-1-83753-849-2

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