The Seattle Harbor Craft: A Case Study of the Design Process

1984 ◽  
Vol 21 (01) ◽  
pp. 49-63
Author(s):  
Paul A. Gow ◽  
Edward C. Hagemann

This paper describes steps in the design process of a high-speed fireboat for Seattle Harbor. The principal requirements that controlled the design concept are outlined along with a parametric study that was performed to identify the optimum hull size. The arrangements, structure, materials selection, and machinery are described as well as the boat's fire fighting/rescue mission and performance characteristics.

Author(s):  
Srikanth Devanathan ◽  
Pranav Koushik ◽  
Fu Zhao ◽  
Karthik Ramani

The issue of environmental sustainability, which is unprecedented in both magnitude and complexity, presents one of the biggest challenges faced by modern society. Engineers, including mechanical engineers, can make significant contribution to the development of solutions to this problem by designing products and processes that are more environmentally sustainable. It is critical that engineers take a paradigm shift of product design i.e. from cost and performance centered to balance of economic, environmental, and societal consideration. Although there have been quite a few design for environment (DfE, or ecodesign) tools developed, so far these tools have only achieved limited industrial penetration: they are either too qualitative/subjective to be used by designers with limited experiences, or too quantitative, costly and time consuming and thus cannot be used during the design process specially during the early design stage. This paper develops a novel, semi-quantitative ecodesign tool that targets specially on early design process. The new tool is a combination of environmental life cycle assessment, working knowledge model, and visual tools such as QFD, functional-component matrix, and Pugh chart. Redesign of staplers is selected as a case study to demonstrate the use of the proposed tool. Efforts are on going to confirm that the new design generated using this new tool does have improved environmental performance.


2009 ◽  
Vol 113 (1142) ◽  
pp. 221-232 ◽  
Author(s):  
J.-L. Hantrais-Gervois ◽  
R. Grenon ◽  
A. Mann ◽  
A. Büscher

AbstractThe design and performance analysis of a wing tip device proposed within the M-DAW project by ONERA is presented. A proto-design process is described and the device was thoroughly assessed (mainly with Reynolds-Averaged Navier-Stokes simulations). The process was further explained through wind-tunnel tests at both low speed and high speed in the pressurised and cryogenic European transonic wind tunnel in Cologne. The device is a downward pointing winglet designed for a retrofit scenario (the wing could be modified only within the 96% – 100% bounds of the span). It was designed to keep the wing root bending moment of the clean wing at cruise unchanged so that the aerodynamic gains are the net gains provided by the device that can be directly installed without structural modifications of the wing.


2020 ◽  
Vol 7 (2) ◽  
pp. 245
Author(s):  
Rizky Dinata ◽  
Marwan Noer

The success of developing new products is a prerequisite for companies to remain competitive in a market that is always demanding. The design concept with the term Flat-pack became very popular and inspired the design of other products, especially product design in small industries or artisans in Indonesia. Research on producing products that have successfully applied this design concept is very much needed to review and discuss the product details of the holeless level 5 Masterspace Rak as a product that will be a case study of how the design process and success in applying the Flat-pack design concept, with the basic principles of knockdown and RTA Ready theory To Assemble. The method that will be used to achieve the objectives of this research is the Basic Theory Method. In carrying out this method, it will be sought where phenomena can be said to be core phenomena that can be taken and formed into a theory. It is hoped that through this research, the results can be applied to the planning of craft innovative products by small craftsmen while still being able to compete globally.


2021 ◽  
Vol 236 ◽  
pp. 05086
Author(s):  
Wei Sun ◽  
Pengfei Li ◽  
Yagang Liu ◽  
Yu Songhun

As a city's transportation gateway, the high-speed rail station is also a business card for displaying and disseminating urban culture. The thesis takes the design process of East Nanyang Station, the largest single-line side station building in China as an example, elaborates the design concept of extracting "dragon in the cloud, soaring forward" as the creative design concept, and discusses the station building from three aspects: the overall plan of the station building, spatial form and spatial details cultural design expression.


Author(s):  
Q Tu ◽  
Y-M Deng ◽  
AYC Nee ◽  
WF Lu

Excellence in function and performance is one of the key reasons for a product to sustain its market competitiveness. Upgrading of products, including those of the adaptable-function products, is necessary to ensure their market attractiveness. Current research that is specifically on upgrading of adaptable-function products is lacking. To this end, this paper attempts to study both functional aspect and performance aspect of upgrade design of this kind of products. For the former, the study focuses on some fundamental issues of functional upgrading relevant to the upgrading type, where an analogy-based functional upgrading strategy is proposed. The proposed work is illustrated by the functional upgrading of an electric drill design case. For the latter, the study focuses on how to evaluate the upgrading priority, for which a number of performance attributes to be upgraded are specified. For this purpose, the technology potentials for enabling the upgrade design (which should be maximized) and the influence caused by the upgrading (which should be minimized) are first studied. Based on technology potentials and upgrading influence, the priority ranking is evaluated to help the designer making performance upgrading decisions. Finally, a case study of upgrading a multifunction machine tool is presented, which demonstrates the feasibility of the proposed evaluation method. With the help of the established upgrading design prototype and the strategy of upgrading priority ranking guidelines, the designers can get the relevant design support during their upgrade design process.


Sign in / Sign up

Export Citation Format

Share Document