Design and development of the UK-10 ion propulsion subsystem

Author(s):  
P. SMITH
Author(s):  
A. S. Kenkare ◽  
T. M. Kilner

Although turbine blade cooling has consistently led to the use of higher turbine inlet temperatures leading to improved cycle efficiencies, very little of this technology has found its way into undergraduate laboratory work. The cost of modern blade heat transfer research rigs virtually rules out the possibility of introducing this topic in undergraduate teaching laboratories of Universities or Polytechnics in the UK operating within tight budgetary constraints. However, the underlying principles of blade cooling heat transfer may be demonstrated quite easily by using inlet temperatures about half those existing in the actual turbine and the paper describes the design and development of a low-cost blade cooling heat transfer rig. Test results obtained on the ‘model’ rig enable an appreciation of the problems encountered in turbine blade cooling to be made and may serve as a basis for the design and development of more complicated blade cooling systems.


Author(s):  
Aspasia Dellaporta

This chapter discusses Web accessibility, and focuses on the challenge of meeting the needs of a diverse audience with different types of disabilities, as well as outlining best practices.It presents the nature and need for Web accessibility, focusing on the UK legislation, and argues that e-accessibility goes beyond legal obligations offering life-enhancing opportunities and services, and promoting inclusion. The dynamics between the Web and its diverse audience are emphasized by giving an overview of the multiple facets of Web accessibility. It has been observed that accessibility is often discussed as affecting blind people only, and discussions frequently isolate a few aspects of it. The author hopes that, by demonstrating and offering ways of understanding Web accessibility and its multilayered nature, the ground will be laid for a more effective and inclusive approach towards Web accessibility as a process in Web design and development.


1993 ◽  
Author(s):  
D. FEARN ◽  
A. MARTIN ◽  
P. SMITH
Keyword(s):  

2020 ◽  
Author(s):  
Nicholas Samuel Johnson ◽  
◽  
Awais Hameed Khan ◽  
Abbie Lawrence ◽  
George Edward Torrens ◽  
...  

2017 ◽  
Vol 3 (4) ◽  
pp. 199-213 ◽  
Author(s):  
Per Erik Eriksson ◽  
Sofia Lingegård ◽  
Lena Borg ◽  
Johan Nyström

This benchmarking study compares how railway investments are procured in five European countries: Sweden, Norway, Germany, the Netherlands, and the UK. In total, 19 procurement managers and project managers were interviewed. This study compares the national rail clients’ procurement strategies regarding: delivery system, reward system, contractor selection, and collaboration model. Historically, these clients have used in-house production. The first step towards a gradually increased usage of the market was to outsource the construction activities while keeping the design and development competence in-house. All five countries have mainly used Design-Bid-Build contracts in their initial outsourcing. However, the last few years there is a discernible trend in Sweden, Norway, the Netherlands and the UK towards allocating more design and development responsibilities to contractors (i.e. Design-Build contracts) and increasing the strategic focus on cooperation. The UK and the Netherlands are forerunners in this trend that can be viewed as a third step in the transition towards a market oriented railway sector. Norway and Sweden is in the middle of this transition, whereas Germany has not initiated this change. The transition towards a gradually increased usage of the market has two main dimensions; degree of cooperation and degree of contractor freedom, which differs among the countries. The UK and Sweden focus on increasing both these dimensions, while The Netherlands and Norway mostly focus on increasing the degree of contractor freedom. Germany still limits both dimensions by performing design and development in-house and letting contractors compete for construction work in Design-Bid-Build contracts. Due to historical and cultural reasons, Deutsche Bahn in Germany is very hesitant to engage in collaboration with external suppliers; focusing on competition is considered more appropriate and less controversial.


2000 ◽  
Vol 111 (1) ◽  
pp. 78-90 ◽  
Author(s):  
C. R. M. Hay ◽  
T. P. Baglin ◽  
P. W. Collins ◽  
F. G. H. Hill ◽  
D. M. Keeling

2006 ◽  
Vol 175 (4S) ◽  
pp. 476-477
Author(s):  
Freddie C. Hamdy ◽  
Joanne Howson ◽  
Athene Lane ◽  
Jenny L. Donovan ◽  
David E. Neal

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