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Article
Publication date: 5 June 2024

Diwan U. Odendaal, Lelanie Smith, Kenneth J. Craig and Drewan S. Sanders

The purpose of this study is to re-evaluation fuselage design when the main wing’s has the ability to fulfill stability requirements without the need for a tailplane. The…

924

Abstract

Purpose

The purpose of this study is to re-evaluation fuselage design when the main wing’s has the ability to fulfill stability requirements without the need for a tailplane. The aerodynamic requirements of the fuselage usually involve a trade-off between reducing drag and providing enough length for positioning the empennage to ensure stability. However, if the main wing can fulfill the stability requirements without the need for a tailplane, then the fuselage design requirements can be re-evaluated. The optimisation of the fuselage can then include reducing drag and also providing a component of lift amongst other potential new requirements.

Design/methodology/approach

A careful investigation of parameterisation and trade-off optimisation methods to create such fuselage shapes was performed. The A320 Neo aircraft is optimised using a parameterised 3D fuselage model constructed with a modified PARSEC method and the SHERPA optimisation strategy, which was validated through three case studies. The geometry adjustments in relation to the specific flow phenomena are considered for the three optimal designs to investigate the influencing factors that should be considered for further optimisation.

Findings

The top three aerodynamic designs show a distinctive characteristic in the low aspect ratio thick wing-like aftbody that has pressure drag penalties, and the aftbody camber increased surface area notably improved the fuselage’s lift characteristics.

Originality/value

This work contributes to the development of a novel set of design requirements for a fuselage, free from the constraints imposed by stability requirements. By gaining insights into the flow phenomena that influence geometric designs when a lift requirement is introduced to the fuselage, we can understand how the fuselage configuration was optimised. This research lays the groundwork for identifying innovative design criteria that could extend into the integration of propulsion of the aftbody.

Details

Aircraft Engineering and Aerospace Technology, vol. 96 no. 11
Type: Research Article
ISSN: 1748-8842

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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…

1133

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

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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…

105

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

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Available. Content available
Book part
Publication date: 24 October 2023

Rodanthi Tzanelli

Free Access. Free Access

Abstract

Details

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

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Book part
Publication date: 27 January 2022

Abstract

Details

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

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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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Book part
Publication date: 16 December 2017

Mary O. Furner

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

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Book part
Publication date: 31 August 2018

Matthew Spokes, Jack Denham and Benedikt Lehmann

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

Available. Content available
Book part
Publication date: 18 February 2025

Simon Winlow

Abstract

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The Politics of Nostalgia
Type: Book
ISBN: 978-1-83753-548-4

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Book part
Publication date: 14 May 2018

Johanna Sumiala, Katja Valaskivi, Minttu Tikka and Jukka Huhtamäki

Free Access. Free Access

Abstract

Details

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

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