Conceptual Design Study on Liquid Hydrogen-Fueled Supersonic Transport Considering Environmental Impacts

2016 ◽  
Vol 53 (4) ◽  
pp. 1168-1173 ◽  
Author(s):  
Tatsunori Yuhara ◽  
Yoshikazu Makino ◽  
Kenichi Rinoie
Keyword(s):  
Environmental Impacts ◽  
Conceptual Design ◽  
Liquid Hydrogen ◽  
Design Study ◽  
Supersonic Transport

scholarly journals Metrics for Measuring Sustainable Product Design Concepts

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3469
Author(s):  
Ji Han ◽  
Pingfei Jiang ◽  
Peter R. N. Childs
Keyword(s):  
Product Design ◽  
End Of Life ◽  
Environmental Impacts ◽  
Conceptual Design ◽  
Design Stage ◽  
Sustainable Product Design ◽  
Early Design ◽  
Design Concepts ◽  
Concept Evaluation ◽  
Sustainable Product

Although products can contribute to ecosystems positively, they can cause negative environmental impacts throughout their life cycles, from obtaining raw material, production, and use, to end of life. It is reported that most negative environmental impacts are decided at early design phases, which suggests that the determination of product sustainability should be considered as early as possible, such as during the conceptual design stage, when it is still possible to modify the design concept. However, most of the existing concept evaluation methods or tools are focused on assessing the feasibility or creativity of the concepts generated, lacking the measurements of sustainability of concepts. The paper explores key factors related to sustainable design with regard to environmental impacts, and describes a set of objective measures of sustainable product design concept evaluation, namely, material, production, use, and end of life. The rationales of the four metrics are discussed, with corresponding measurements. A case study is conducted to demonstrate the use and effectiveness of the metrics for evaluating product design concepts. The paper is the first study to explore the measurement of product design sustainability focusing on the conceptual design stage. It can be used as a guideline to measure the level of sustainability of product design concepts to support designers in developing sustainable products. Most significantly, it urges the considerations of sustainability design aspects at early design phases, and also provides a new research direction in concept evaluation regarding sustainability.

An integrated conceptual design study using span morphing technology

2013 ◽  
Vol 25 (8) ◽  
pp. 989-1008 ◽  
Author(s):  
Rafic M Ajaj ◽  
Michael I Friswell ◽  
Erick I Saavedra Flores ◽  
Andy Keane ◽  
Askin T Isikveren ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Design Study ◽  
Morphing Technology

Conceptual Design Study on Inertial Confinement Reactor “Senri-II”

1983 ◽  
Vol 4 (2P3) ◽  
pp. 854-859 ◽  
Author(s):  
N. Nakamura ◽  
H. Omura ◽  
S. Ido ◽  
S. Nakai ◽  
C. Yamanaka
Keyword(s):  
Conceptual Design ◽  
Inertial Confinement ◽  
Design Study

A Conceptual Design Study of the Construction of Hydrodynamic Control Surfaces

1994 ◽  
Vol 10 (04) ◽  
pp. 258-273
Author(s):  
A. D. Karstensen ◽  
A. C. Fairlie-Clarke ◽  
I. E. Winkle
Keyword(s):  
Polyurethane Foam ◽  
Conceptual Design ◽  
Inner Core ◽  
Surface Shape ◽  
Frame Structure ◽  
Design Study ◽  
The Face ◽  
Steel Frame Structure ◽  
Further Development ◽  
Control Surfaces

Hydrodynamic control surfaces are traditionally built as steel fabrications. While this gives a very strong structure, it is rather heavy and costly, it is difficult to achieve smooth surfaces, and the steel is susceptible to erosion, corrosion and marine fouling. This paper describes a conceptual design study aimed at creating a competitive advantage for the manufacturers of control surfaces by using modern materials in a composite structure. The conceptual design process, as applied here, starts by specifying the design requirements for the construction of control surfaces and listing a set of criteria against which the concept designs can be evaluated. A total of six concept designs are described and evaluated in comparison with a traditional steel fabrication, and one concept is selected for further development. This comprises a light steel frame structure with thin steel inner face plates enclosing an inner core that is filled with polyurethane foam. The surface shape is also formed with polyurethane foam poured between the face plates and a surface mold plate. Finally, the surface is sprayed with a polyurethane elastomer coating.

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