Velaphi Msomi and Graeme John Oliver
This article reports on the possibility of using nickel titanium shape memory alloy (NiTi SMA) plates rather than NiTi SMA wire for actuation application in the aerospace…
Abstract
Purpose
This article reports on the possibility of using nickel titanium shape memory alloy (NiTi SMA) plates rather than NiTi SMA wire for actuation application in the aerospace industries.
Design/methodology/approach
A scaled-down model of smart aileron was constructed based on NiTi SMA plate and aluminium plate. Prior to the manufacturing process, NiTi SMA plates had to be trained to suit our application. The leading edge was constructed using trained NiTi SMA plates, whereas the trailing edge was constructed using aluminium plates. Pop rivets were used in joining the parts or in the construction of the smart aileron, and riveting was preferred as it is mostly used in the aerospace industry for surface construction. The constructed smart aileron was tested for vertical upward and downward deflection using heat application, and the deflection was measured using deflection transducer. The heat was sourced from heater mat kits that were laminated inside the smart aileron. The temperature and the deflection data were recorded and analyzed.
Findings
It was found that NiTi SMA plates could give a deflection on the trailing edge of the smart aileron. The current maximum deflection was found to be 3 mm, which corresponds to aileron rotation of about 0.57 degrees.
Originality/value
The paper presents a hinge-less alternative in bringing the rolling motion of the flight. The constructed model of smart aileron can be used to replace the existing aileron, which is activated through hydraulic systems. So, the newly constructed smart aileron can be used with the benefit of reducing weight, because it does not use the hydraulic systems like the existing one.
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The following is an introductory profile of the fastest growing firms over the three-year period of the study listed by corporate reputation ranking order. The business activities…
Abstract
The following is an introductory profile of the fastest growing firms over the three-year period of the study listed by corporate reputation ranking order. The business activities in which the firms are engaged are outlined to provide background information for the reader.
Through a survey of 200 employees working in five of the thirty establishments analysed in previous research about the microeconomic effects of reducing the working time (Cahier…
Abstract
Through a survey of 200 employees working in five of the thirty establishments analysed in previous research about the microeconomic effects of reducing the working time (Cahier 25), the consequences on employees of such a reduction can be assessed; and relevant attitudes and aspirations better known.
While visual arts, drama, dance and music have been used to enhance literacy learning for many decades in preschool and primary classrooms, engaging with mobile learning can also…
Abstract
While visual arts, drama, dance and music have been used to enhance literacy learning for many decades in preschool and primary classrooms, engaging with mobile learning can also provide many opportunities for young learners to explore and develop language and literacy. The use of mobile devices is of particular interest as technology has an impact on pedagogy and the mobility of digital devices provides many opportunities for engaged and meaningful literacy learning when teamed with the arts. In this chapter, we define the arts and their relationship with literacy learning before exploring a number of resources and practices for integrating their use in early learning settings.
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W. Chad Carlos, Wesley D. Sine, Brandon H. Lee and Heather A. Haveman
Social movements can disrupt existing industries and inspire the emergence of new markets by drawing attention to problems with the status quo and promoting alternatives. We…
Abstract
Social movements can disrupt existing industries and inspire the emergence of new markets by drawing attention to problems with the status quo and promoting alternatives. We examine how the influence of social movements on entrepreneurial activity evolves as the markets they foster mature. Theoretically, we argue that the success of social movements in furthering market expansion leads to three related outcomes. First, the movement-encouraged development of market infrastructure reduces the need for continued social movement support. Second, social movements’ efforts on behalf of new markets increase the importance of resource availability for market entry. Third, market growth motivates countermovement that reduce the beneficial impact of initiator movements on entrepreneurial activity. We test these arguments by analyzing evolving social movement dynamics and entrepreneurial activity in the US wind power industry from 1992 to 2007. We discuss the implications of our findings for the study of social movements, stakeholder management, sustainability, and entrepreneurship.
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Luiz Moutinho, Fiona Davies and Graeme Hutcheson
This paper is designed to set the scene in terms of introducing the methodological framework used in the academic “think tank” in marketing held at Lake of Menteith in Scotland in…
Abstract
This paper is designed to set the scene in terms of introducing the methodological framework used in the academic “think tank” in marketing held at Lake of Menteith in Scotland in 1999. Some important academic insights and considerations are discussed at the outset with regard to the evaluation of future impacts on the multiple facets of the marketing discipline, although the amount and quality of dedicated academic research in this area has been limited. The new role of the marketing function and new customer market structures are debated, followed by a discussion of the intrinsic capabilities of scenario planning, as an environmental forecasting technique. Furthermore, we analyse the contribution of knowledge based systems to scenario planning and describe the design/development of an expert system at the Lake of Menteith gathering.
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EFFECTIVE action sometimes badly needs clarity of thought to fashion a jungle of facts into a pattern of interpretation—the progress of such a discipline will be helped by…
Abstract
EFFECTIVE action sometimes badly needs clarity of thought to fashion a jungle of facts into a pattern of interpretation—the progress of such a discipline will be helped by discussion in print.
WE write on the eve of an Annual Meeting of the Library Association. We expect many interesting things from it, for although it is not the first meeting under the new…
Abstract
WE write on the eve of an Annual Meeting of the Library Association. We expect many interesting things from it, for although it is not the first meeting under the new constitution, it is the first in which all the sections will be actively engaged. From a membership of eight hundred in 1927 we are, in 1930, within measurable distance of a membership of three thousand; and, although we have not reached that figure by a few hundreds—and those few will be the most difficult to obtain quickly—this is a really memorable achievement. There are certain necessary results of the Association's expansion. In the former days it was possible for every member, if he desired, to attend all the meetings; today parallel meetings are necessary in order to represent all interests, and members must make a selection amongst the good things offered. Large meetings are not entirely desirable; discussion of any effective sort is impossible in them; and the speakers are usually those who always speak, and who possess more nerve than the rest of us. This does not mean that they are not worth a hearing. Nevertheless, seeing that at least 1,000 will be at Cambridge, small sectional meetings in which no one who has anything to say need be afraid of saying it, are an ideal to which we are forced by the growth of our numbers.