11,414 research outputs found
Optimal design of a flying-wing aircraft inner wing structure configuration
No full textFlying-wing aircraft are considered to have great advantages and potentials in
aerodynamic performance and weight saving. However, they also have many
challenges in design. One of the biggest challenges is the structural design of
the inner wing (fuselage). Unlike the conventional fuselage of a tube
configuration, the flying-wing aircraft inner wing cross section is limited to a
noncircular shape, which is not structurally efficient to resist the internal
pressure load. In order to solve this problem, a number of configurations have
been proposed by other designers such as Multi Bubble Fuselage (MBF),
Vaulted Ribbed Shell (VLRS), Flat Ribbed Shell (FRS), Vaulted Shell
Honeycomb Core (VLHC), Flat Sandwich Shell Honeycomb Core (FLHC), Y
Braced Box Fuselage and the modified fuselage designed with Y brace
replaced by vaulted shell configurations. However all these configurations still
inevitably have structural weight penalty compared with optimal tube fuselage
layout. This current study intends to focus on finding an optimal configuration
with minimum structural weight penalty for a flying-wing concept in a preliminary
design stage.
A new possible inner wing configuration, in terms of aerodynamic shape and
structural layout, was proposed by the author, and it might be referred as
‘Wave-Section Configuration’. The methodologies of how to obtain a structurally
efficient curvature of the shape, as well as how to conduct the initial sizing were
incorporated.
A theoretical analysis of load transmission indicated that the Wave-Section
Configuration is feasible, and this was further proved as being practical by FE
analysis. Moreover, initial FE analysis and comparison of the Wave-Section
Configuration with two other typical configurations, Multi Bubble Fuselage and
Conventional Wing, suggested that the Wave-Section Configuration is an
optimal design in terms of weight saving. However, due to limitations of the
author’s research area, influences on aerodynamic performances have not yet
been taken into account
Art, Biography, Sexuality: Patrick Procktor and Keith Vaughan
No full textThis critical review forms a reflection on the research published within the following publications:
Patrick Procktor: Art and Life (Unicorn Press, 2010)
Keith Vaughan: The Mature Oils 1946-1977, (Sansom & Co., 2012)
The research is on two artists, Patrick Procktor (1936-2003), and Keith Vaughan (1912-1977). The monograph on Procktor – previously one of the least documented of the generation of artists who came to prominence in London in the Sixties – positions him in a history of art from which he had been notably absent. The research on Vaughan asserts a new reading of his work, one that is both deeper and more nuanced in its analysis of the ways in which personal experience and sexuality are encoded autobiographically within his work. Crucially, in both artists biography and work are symbiotically linked; the research therefore examines the links between life and art.
Revisionary in intent, the work examines trajectories of experience of gay British (or rather, English) artists in the twentieth century, artists who sought to express themselves and forge careers within the constraints of a heteronormative society, albeit one in which attitudes to sexuality were undergoing change. As gay men, both were constrained by the social mores of their times, and each used painting as a means to affirm personal and sexual identities. A key research interest is in the ways in which sexuality and persona are reflected in critical responses to the artist’s work: in Vaughan, Procktor and other gay male artists of the period. The writing on both Procktor and Vaughan examines the relationship between their personal and professional/artistic lives, framed within a broader socio-political and art historical context. It asserts the place of biography as a means to understand and form new readings of the work. The work adds substantially to the literature and wider discourse on post-war British painting and social history
De Nicola Bruno, Melville Charles (eds.), The Mongols’ Middle East : Continuity and Transformation in Ilkhanid Iran. Leiden, Boston, Brill, 2016
No full textWing Patrick. De Nicola Bruno, Melville Charles (eds.), The Mongols’ Middle East : Continuity and Transformation in Ilkhanid Iran. Leiden, Boston, Brill, 2016. In: Bulletin critique des annales islamologiques, n°33, 2019. pp. 68-70
Aigle Denise, The Mongol Empire between Myth and Reality : Studies in Anthropological History. Leiden, Brill, 2014
No full textWing Patrick. Aigle Denise, The Mongol Empire between Myth and Reality : Studies in Anthropological History. Leiden, Brill, 2014. In: Bulletin critique des annales islamologiques, n°31, 2017. pp. 81-84
Jackson Peter, The Mongols and the Islamic World : From Conquest to Conversion. New Haven and London, Yale University Press, 2017
No full textWing Patrick. Jackson Peter, The Mongols and the Islamic World : From Conquest to Conversion. New Haven and London, Yale University Press, 2017. In: Bulletin critique des annales islamologiques, n°33, 2019. pp. 56-58
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Freight Wing Trailer Aerodynamics
No full textFreight Wing Incorporated utilized the opportunity presented by this DOE category one Inventions and Innovations grant to successfully research, develop, test, patent, market, and sell innovative fuel and emissions saving aerodynamic attachments for the trucking industry. A great deal of past scientific research has demonstrated that streamlining box shaped semi-trailers can significantly reduce a truck's fuel consumption. However, significant design challenges have prevented past concepts from meeting industry needs. Market research early in this project revealed the demands of truck fleet operators regarding aerodynamic attachments. Products must not only save fuel, but cannot interfere with the operation of the truck, require significant maintenance, add significant weight, and must be extremely durable. Furthermore, SAE/TMC J1321 tests performed by a respected independent laboratory are necessary for large fleets to even consider purchase. Freight Wing used this information to create a system of three practical aerodynamic attachments for the front, rear and undercarriage of standard semi trailers. SAE/TMC J1321 Type II tests preformed by the Transportation Research Center (TRC) demonstrated a 7% improvement to fuel economy with all three products. If Freight Wing is successful in its continued efforts to gain market penetration, the energy and environmental savings would be considerable. Each truck outfitted saves approximately 1,100 gallons of fuel every 100,000 miles, which prevents over 12 tons of CO2 from entering the atmosphere. If all applicable trailers used the technology, the country could save approximately 1.8 billion gallons of diesel fuel, 18 million tons of emissions and 3.6 billion dollars annually
Patrick Chamoiseau Recovering Memory
No full textThis timely new book skillfully examines the work of the award-winning writer Patrick Chamoiseau. Considered by many as one of the most innovative writers to hit the French literary scene in over 40 years, Chamoiseau made his name with his book Texaco (published in 1992 and winner of the highest literary prize in France, the Prix Goncourt). His books have gone on to sell millions and his work has been translated by a number of academic presses. McCusker sets the author in context, providing a valuable contribution to 'memory studies' by looking at literary representation of memory in Martinique, a society founded on slavery but now politically assimilated to the metropolitan centre, France.Title Page -- Contents -- Introduction -- 1: Beginnings: The Enigma of Origin -- 2: 'Une tracée de survie': Autobiographical Memory -- 3: Memory Re-collected: Witnesses and Words -- 4: Memory Materialized: Traces of the Past -- 5: Flesh Made Word: Traumatic Memory in Biblique des derniers gestes -- Afterword -- Notes -- Bibliography -- IndexThis timely new book skillfully examines the work of the award-winning writer Patrick Chamoiseau. Considered by many as one of the most innovative writers to hit the French literary scene in over 40 years, Chamoiseau made his name with his book Texaco (published in 1992 and winner of the highest literary prize in France, the Prix Goncourt). His books have gone on to sell millions and his work has been translated by a number of academic presses. McCusker sets the author in context, providing a valuable contribution to 'memory studies' by looking at literary representation of memory in Martinique, a society founded on slavery but now politically assimilated to the metropolitan centre, France.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
Aircraft engine performance and integration in a flying wing aircraft conceptual design
No full textThe increasing demand of more economical and environmentally friendly aero
engines leads to the proposal of a new concept – geared turbofan. In this thesis,
the characteristics of this kind of engine and relevant considerations of
integration on a flying wing aircraft were studied.
The studies can be divided into four levels: GTF-11 engine modelling and
performance simulation; aircraft performance calculation; nacelle design and
aerodynamic performance evaluation; preliminary engine installation.
Firstly, a geared concept engine model was constructed using TURBOMATCH
software. Based on parametric analysis and SFC target, the main cycle
parameters were selected. Then, the maximum take-off thrust was verified and
corrected from 195.56kN to 212kN to meet the requirements of take-off field
length and second segment climb. Besides, the engine performance at offdesign
points was simulated for aircraft performance calculation.
Secondly, an aircraft performance model was developed and the performance
of FW-11 was calculated on the basis of GTF-11 simulation results. Then, the
effect of GTF-11 characteristics performance on aircraft performance was
evaluated. A comparison between GTF-11 and conventional turbofan, RB211-
524B4, indicated that the aircraft can achieve a 13.1% improvement in fuel
efficiency by using the new concept engine.
Thirdly, a nacelle was designed for GTF-11 based on NACA 1-series and
empirical methods while the nacelle dimensions of conventional turbofan
RB211-525B4 were obtained by measure approach. Then, the installation thrust
losses caused by nacelle drags of the two engines were evaluated using ESDU
81024a. The results showed that the nacelle drags account for about 4.08%
and 3.09% of net thrust for GTF-11 and RB211-525B4, respectively.
Finally, the considerations of engine installation on a flying wing aircraft were
discussed and a preliminary disposition of GTF-11 on FW-11 was presented
A study of quality control circle in an automobile service company in Hong Kong.
No full textby Yu Wing-yip, Patrick, Tsui Hong-fai, Alan.Thesis (M.B.A.)--Chinese University of Hong Kong, 1988.Bibliography: leaves 55-57
The prevalence of debt instruments? - the investors' perspectives.
No full textby Jackson Wing-Kwong Cheung, Patrick Kai-Cheung Yeung.Thesis (M.B.A.)--Chinese University of Hong Kong, 1989.Bibliography: leaves 64-65
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