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Article
Publication date: 1 August 2004

Schalk Willem van der Merwe Meintjes, R.J. Huyssen and N.J. Theron

This paper argues that, together with improved protection structures and energy dissipation systems, a favourable occupant position with sufficient support and restraint could…

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Abstract

This paper argues that, together with improved protection structures and energy dissipation systems, a favourable occupant position with sufficient support and restraint could reduce fatalities in aviation accidents. The crash responses of three different occupant positions were compared to justify the proposal of supporting a pilot in the rather unusual prone position. The normal seated and supine seated positions have already been adopted and implemented in aircraft. The occupant's response to specified crash pulse shapes in these two positions was compared with that of an occupant in the prone position. To obtain the best prone support configuration, different concepts were considered during the analysis. A dynamic event simulation program called ADAMS was used to perform the analysis, and existing injury criteria and a study of common causes of aviation fatalities and human body tolerance limits were used to compare the results. The study indicates that higher crash survivability in the prone position could be achieved if several guidelines are followed.

Details

Aircraft Engineering and Aerospace Technology, vol. 76 no. 4
Type: Research Article
ISSN: 0002-2667

Keywords

Article
Publication date: 2 February 2023

Aishwarya Dhara and J.V. Muruga Lal Jeyan

This research is associated with the real-time parameters of wide- and narrow-body aircraft to recognize the quantitative relationship framework. This paper aims to find the…

Abstract

Purpose

This research is associated with the real-time parameters of wide- and narrow-body aircraft to recognize the quantitative relationship framework. This paper aims to find the superiority of aircraft design technology which triggers the reduction in specific fuel consumption (SFC) and economic competitiveness.

Design/methodology/approach

The real case study is performed with 22 middle-of-the-market (MoM) aircraft. This paper develops a fuel burn mathematical model for mid-size transport aircraft by a multi-linear regression approach. In addition, sensitivity analysis is performed to establish the authentication of the fuel burn model.

Findings

The study reveals that the MoM aircraft would be the future aircraft design in terms of better fuel economy and carbon footprint. From the multi-regression analysis, it is observed that the logarithmic regression model is the best fit for estimating the SFC. Moreover, fineness ratio, aspect ratio, gross weight, payload weight fraction, empty weight fraction), fuel weight fraction, payload, wing loading, thrust loading, range, take-off distance, cruise speed and rate of climb are observed as the suitable parameters which provide the best fitness value as 0.9804.

Originality/value

Several existing literature reveals that a few research has been performed on the MoM aircraft with wide-body configuration. Moreover, mathematical modelling on the fuel consumption was insignificantly found. This study examines several parameters which affect the fuel consumption of a wide-body aircraft. A real-case study for design configurations, propulsive systems, performance characteristics and structural integrity parameters of 22 different MoM aircraft are performed. Moreover, multi-regression modelling is developed to establish the relation between SFC and other critical parameters.

Details

Aircraft Engineering and Aerospace Technology, vol. 95 no. 6
Type: Research Article
ISSN: 1748-8842

Keywords

Content available
Book part
Publication date: 24 October 2023

Rodanthi Tzanelli

Abstract

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The New Spirit of Hospitality
Type: Book
ISBN: 978-1-83753-161-5

Content available
Book part
Publication date: 27 January 2022

Abstract

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Women and the Abuse of Power
Type: Book
ISBN: 978-1-80043-335-9

Book part
Publication date: 10 August 2017

Magdalena Nowicka-Franczak

Public acts of self-criticism in Eastern Europe – a genre cultivated and extorted by the communist parties – did not disappear with the end of communism. In the young democracies…

Abstract

Public acts of self-criticism in Eastern Europe – a genre cultivated and extorted by the communist parties – did not disappear with the end of communism. In the young democracies of the region self-criticism has become an attempt to diagnose society’s ‘backward’ character and to develop ‘self-correction’ scenarios in order to participate in the Western modernising discourse. On the one hand, conservative and right-wing elites suppose that public acts of self-criticism (performed by politicians, artists or scholars) can endow the vetting procedures of the ancien régime with a sense of social catharsis and retroactive justice. On the other hand, liberal and left-wing intellectuals subject themselves to collective self-reckoning, not only with their choices made in the transition period, but also with the memory of WWII, in order to shape a civil society free of anti-Semitism and intolerance. An analysis based on the discourse-historical approach in critical discourse analysis, Reinhart Koselleck’s historical semantics and Michel Foucault’s notion of discourse, and carried out on the text corpus of selected acts of self-criticism in Poland, aims to diagnose the role these acts had in shaping public discourse on the troublesome past.

Details

National Identity and Europe in Times of Crisis
Type: Book
ISBN: 978-1-78714-514-6

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Abstract

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Including a Symposium on New Directions in Sraffa Scholarship
Type: Book
ISBN: 978-1-78714-539-9

Abstract

Details

Death, Memorialization and Deviant Spaces
Type: Book
ISBN: 978-1-78756-574-6

Content available
Book part
Publication date: 14 May 2018

Johanna Sumiala, Katja Valaskivi, Minttu Tikka and Jukka Huhtamäki

Abstract

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Hybrid Media Events
Type: Book
ISBN: 978-1-78714-852-9

Book part
Publication date: 11 April 2017

Ngaire Bissett

This chapter addresses growing concerns that, despite being a radically intentioned community, Critical Management Studies (CMS) lacks an orientation to achieve pragmatic change…

Abstract

This chapter addresses growing concerns that, despite being a radically intentioned community, Critical Management Studies (CMS) lacks an orientation to achieve pragmatic change. In response I argue that the failure to address the continuing marginalisation of the subaltern is key to CMS being negatively represented as an elitist self-preoccupied endeavour. This state of affairs is linked to a legacy of the ‘postmodern’ turn, which emerged in the 1980s and 1990s, as evidenced by the nature of contemporary debates continuing to reflect the stylistic fetishes of that time. I contend that the ghost of postmodernism is evident in the continuing predilection to produce signification discourses marked by symbolic absences, which politically confine such texts to the level of epistemology. The lack of integration of ontological concerns means that corporeal aspects of daily life are neglected, resulting in an abstracted ‘subjectless’ mode of representation. To address these limitations, a feminist activist version of post-structuralism (PSF) of the time is revisited, which through its distinctive attention to community concerns, enabled the linking of epistemological and ontological representations; thereby facilitating the creation of a framework for pragmatic change. As the chapter demonstrates, by drawing attention to the integral relationship between the modes of representation, power relations and subsequent social effects, poststructuralist feminists were able to achieve praxis outcomes. Accordingly, I argue this treasure house of ideas needs to be reclaimed and provides illustrations of the design principles proffered to support my contentions.

Details

Feminists and Queer Theorists Debate the Future of Critical Management Studies
Type: Book
ISBN: 978-1-78635-498-3

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Book part
Publication date: 5 November 2016

Pedro Limón López and Sergio Claudio González García

Links between urban areas and public space have always had a central presence in the field of Urban Sociology. During the last four decades, and in relation with globalization…

Abstract

Links between urban areas and public space have always had a central presence in the field of Urban Sociology. During the last four decades, and in relation with globalization processes, reflection about city places and what constitutes the “public” has increasingly been in line with what has been called an “emplacing heritage process,” which emerged as a controversial point of intervention in urban areas. In this sense, itineraries have been considered of primary importance in urban heritage signification, recognition, and symbolic production. In short, these routes appear as ways in which public space is materially and symbolically occupied, becoming emplacing heritage processes in themselves.

In this chapter, we study two heritage-making processes through neighborhood itineraries, which are carried out in district territory and are located in two peripheral neighborhoods belonging to the City of Madrid (Hortaleza and Carabanchel). Ultimately, the point here is that these routes are not merely a pathway that “goes” along acknowledged heritage places; these itineraries are an emplacement and a signification of patrimony itself. These processes act as markers of iconic places and as remembrance performances of neighborhood memory. We would argue that routes around historical places in Carabanchel, as well as the “Three Wise Men” popular parades in Hortaleza bring shared geographical imaginaries, collective memory, and iconic places together in everyday experiences of both places. These itineraries change both urban sites in terms of their neighborhood heritage by disputing spatial discourses and imaginaries of heritage, urban place, and neighborhood.

Details

Public Spaces: Times of Crisis and Change
Type: Book
ISBN: 978-1-78635-463-1

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