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Article

H. Castaing

EACH blade of an airscrew is submitted to an elementary static balance check after it has been completed. But this operation does not eliminate the necessity to carry out…

Abstract

EACH blade of an airscrew is submitted to an elementary static balance check after it has been completed. But this operation does not eliminate the necessity to carry out a general balance of the complete airscrew. This is carried out statically, first of all for the hub alone, and then statically and dynamically for the completely assembled airscrew.

Details

Aircraft Engineering and Aerospace Technology, vol. 13 no. 3
Type: Research Article
ISSN: 0002-2667

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Article

H. Castaing

IN the construction of their airscrews the Hispano Suiza Company use principally aluminium alloys—duralumin, alfcrium, avional—with a mean density of 2·8, and with…

Abstract

IN the construction of their airscrews the Hispano Suiza Company use principally aluminium alloys—duralumin, alfcrium, avional—with a mean density of 2·8, and with mechanical properties equal to those of a half‐hard steel. They have been considering for some time the manufacture of blades of magnesium alloy, the mean density of which is 1·8, thereby offering considerable advantage over the aluminium alloys as regards weight, but, in this article, only aluminium alloy blades are dealt with.

Details

Aircraft Engineering and Aerospace Technology, vol. 11 no. 5
Type: Research Article
ISSN: 0002-2667

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Article

Murray C. Beebe

The necessity for refinement of airscrew balance in order to eliminate destructive vibration from this source is due largely to the continuously improving standards of…

Abstract

The necessity for refinement of airscrew balance in order to eliminate destructive vibration from this source is due largely to the continuously improving standards of passenger comfort of modern aeroplanes and to the operator's desire to extend the normal service life of the power plant and its accessories as well as that of the aeroplane structure. Power plant vibration already has been reduced to a degree where, in standard aeroplanes, there is no longer danger of major structural failure due to vibration originating from this source. Efforts to refine further the balance of engines and airscrews are directed mainly at increasing passenger comfort and extending the service life of aeroplane equipment.

Details

Aircraft Engineering and Aerospace Technology, vol. 13 no. 12
Type: Research Article
ISSN: 0002-2667

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Book part

M.C. Mirow

This chapter examines ways the Spanish Constitution of 1812, also known as the Constitution of Cádiz, has been viewed in historical and constitutional thought. The…

Abstract

This chapter examines ways the Spanish Constitution of 1812, also known as the Constitution of Cádiz, has been viewed in historical and constitutional thought. The document is a liberal constitution establishing constitutional rights, a representative government, and a parliamentary monarchy. It influenced ideas of American equality within the Spanish Empire, and its traces are observed in the process of Latin American independence. To these accepted views, one must add that the Constitution was a lost moment in Latin American constitutional development. By the immediate politicization of constitutionalism after 1812, the document marks the beginning of constitutional difficulties in the region.

Details

Studies in Law, Politics and Society
Type: Book
ISBN: 978-0-85724-615-8

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Book part

Roland Pérez

The goal of this chapter is to discuss the foundations of ‘modern finance’, its paradigm and conceptual framework, its methods and tools, its practices and results, its…

Abstract

Purpose

The goal of this chapter is to discuss the foundations of ‘modern finance’, its paradigm and conceptual framework, its methods and tools, its practices and results, its governance and regulation.

Approach

The first part presents the characteristics of ‘modern finance’ and its negative effects. The second part analyses the efforts made to remedy those effects and argue about the need for a real reform.

Findings

Several aspects are pointed, for example an unreasonable ‘normality’, incentives that encourage excess, the spread of subprime crisis, etc. The contemporary finance is a ‘giant with clay feet’.

Originality/value

We need to proceed with a dual reembeddedness of finance in the economy and economy in society.

Details

Finance Reconsidered: New Perspectives for a Responsible and Sustainable Finance
Type: Book
ISBN: 978-1-78560-980-0

Keywords

Content available

Abstract

Details

Traffic Safety and Human Behavior
Type: Book
ISBN: 978-1-78635-222-4

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Article

Franz Dieter Fischer, Thomas Schaden, Fritz Appel and Helmut Clemens

In terms of continuum mechanics a twin is represented by the sudden appearance of a shear eigenstrain state in a distinct region. The corresponding elastic strain energy…

Abstract

In terms of continuum mechanics a twin is represented by the sudden appearance of a shear eigenstrain state in a distinct region. The corresponding elastic strain energy, the interface energy and the energy dissipated due to the irreversible character of the deformation process are investigated. If the total amount of these energy terms, spent by the twinning process, can be provided by the interaction energy of an external and/or internal stress state with respect to the twin shear eigenstrain, then either a deformation twin band or a twin nucleus may appear. Realistic estimations of the dimensions of deformation twins can be presented. This energetic interpretation of twinning is experimentally demonstrated for intermetallic TiAl.

Details

Multidiscipline Modeling in Materials and Structures, vol. 2 no. 2
Type: Research Article
ISSN: 1573-6105

Keywords

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Book part

Brian Moeran

Drawing on research in the worlds of advertising, magazines and fashion, this paper discusses how celebrities mediate between different fields of cultural production. By…

Abstract

Drawing on research in the worlds of advertising, magazines and fashion, this paper discusses how celebrities mediate between different fields of cultural production. By focusing on celebrity endorsements in advertising, it also outlines how film actors and actresses, athletes, models, pop singers, sportsmen and women mediate between producers and consumers via the products and services that they endorse. As economic mediators, celebrities’ actions have important strategic and financial implications for the corporations whose products they endorse. As cultural mediators, they give commodities personalities and perform across different media, linking different cultural fields into an integrated name economy.

Details

Anthropological Perspectives on Economic Development and Integration
Type: Book
ISBN: 978-0-76231-071-5

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Article

Daniel Zéghal and Anis Maaloul

The purpose of this paper is to analyse the role of value added (VA) as an indicator of intellectual capital (IC), and its impact on the firm's economic, financial and…

Abstract

Purpose

The purpose of this paper is to analyse the role of value added (VA) as an indicator of intellectual capital (IC), and its impact on the firm's economic, financial and stock market performance.

Design/methodology/approach

The value added intellectual coefficient (VAIC™) method is used on 300 UK companies divided into three groups of industries: high‐tech, traditional and services. Data require to calculate VAIC™ method are obtained from the “Value Added Scoreboard” provided by the UK Department of Trade and Industry (DTI). Empirical analysis is conducted using correlation and linear multiple regression analysis.

Findings

The results show that companies' IC has a positive impact on economic and financial performance. However, the association between IC and stock market performance is only significant for high‐tech industries. The results also indicate that capital employed remains a major determinant of financial and stock market performance although it has a negative impact on economic performance.

Practical implications

The VAIC™ method could be an important tool for many decision makers to integrate IC in their decision process.

Originality/value

This is the first research which has used the data on VA recently calculated and published by the UK DTI in the “Value Added Scoreboard”. This paper constitutes therefore a kind of validation of the ministry data.

Details

Journal of Intellectual Capital, vol. 11 no. 1
Type: Research Article
ISSN: 1469-1930

Keywords

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Article

R.T. DeVault

The problem of supplying additional power to a helicopter rotor for take‐off or hovering under overload, hot‐day or altitude conditions is discussed briefly, and the boost…

Abstract

The problem of supplying additional power to a helicopter rotor for take‐off or hovering under overload, hot‐day or altitude conditions is discussed briefly, and the boost system requirements are defined qualitatively. The Mirquardt Aircraft Co. is in process of developing a novel ram‐jet engine to meet these requirements under the sponsorship of the United States Air Force. The progress to date is reviewed, and the eventual application of this engine is discussed.

Details

Aircraft Engineering and Aerospace Technology, vol. 27 no. 2
Type: Research Article
ISSN: 0002-2667

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