Reengineering the aircraft design process

Grose, Daniel

doi:10.2514/6.1994-4323

Cited by 22 publications

(12 citation statements)

References 1 publication

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“…The use of DSMs has been studied in a wide variety of industries including aerospace (Grose, 1994), automotive (Black et al, 1990), building design (Austin et al, 1994) manufacturing (Kusiak, 1994) and telecommunications (Pinkett, 1998). Much of the work has been of a theoretical nature, exploring ways that this tool can help to improve the organization of development projects in general (e.g, Eppinger et al, 1994) or describing how DSMs can be used to capture the choices available to an architect in terms of a design's future evolution (e.g., see Baldwin and Clark, 2000).…”

Section: Methodsmentioning

confidence: 99%

Exploring the Structure of Complex Software Designs: An Empirical Study of Open Source and Proprietary Code

2006

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Much recent research has pointed to the critical role of architecture in the development of a firm's products, services and technical capabilities. A common theme in these studies is the notion that specific characteristics of a product's design -for example, the degree of modularity it exhibits -can have a profound effect on among other things, its performance, the flexibility of the process used to produce it, the value captured by its producer, and the potential for value creation at the industry level. Unfortunately, this stream of work has been limited by the lack of appropriate tools, metrics and terminology for characterizing key attributes of a product's architecture in a robust fashion. As a result, there is little empirical evidence that the constructs emerging in the literature have power in predicting the phenomena with which they are associated. This paper reports data from a research project which seeks to characterize the differences in design structure between complex software products. In particular, we adopt a technique based upon Design Structure Matrices (DSMs) to map the dependencies between different elements of a design then develop metrics that allow us to compare the structures of these different DSMs. We demonstrate the power of this approach in two ways: First, we compare the design structures of two complex software products -the Linux operating system and the Mozilla web browser -that were developed via contrasting modes of organization: specifically, open source versus proprietary development. We find significant differences in their designs, consistent with an interpretation that Linux possesses a more "modular" architecture. We then track the evolution of Mozilla, paying particular attention to a major "re-design" effort that took place several months after its release as an open source product. We show that this effort resulted in a design structure that was significantly more modular than its predecessor, and indeed, more modular than that of a comparable version of Linux.Our findings demonstrate that it is possible to characterize the structure of complex product designs and draw meaningful conclusions about the precise ways in which they differ. We provide a description of a set of tools that will facilitate this analysis for software products, which should prove fruitful for researchers and practitioners alike. Empirically, the data we provide, while exploratory, is consistent with a view that different modes of organization may tend to produce designs possessing different architectural characteristics. However, we also find that purposeful efforts to re-design a product's architecture can have a significant impact on the structure of a design, at least for products of comparable complexity to the ones we examine here.2

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Section: Methodsmentioning

confidence: 99%

Exploring the Structure of Complex Software Designs: An Empirical Study of Open Source and Proprietary Code

2006

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“…For example, the DSM has been applied to a system-oriented model of aircraft design; and shown the potential of a 50% reduction in cycle time, resulting in re-engineering the design approach around the flow of information. 24 …”

Section: Design Manager's Aid For Intelligent Decompositionmentioning

confidence: 97%

Tools and Techniques for Decomposing and Managing Complex Design Projects

Rogers

1999

Journal of Aircraft

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Many companies are looking for new tools and techniques to aid a design manager in making decisions that can reduce the time and cost of a design cycle. One tool that is available to aid in this decisionmaking process is the design manager's aid for intelligent decomposition (DeMAID). Since the initial public release of DeMAID in 1989, much research has been done in the areas of decomposition, concurrent engineering, and process management, and many new tools and techniques have been developed. Based on this research and development, numerous enhancements have been added to DeMAID to aid the design manager in saving both cost and time in a design cycle. The key enhancement, a genetic algorithm (GA), is available in the most recent public release called DeMAID/GA. The GA orders the sequence of design processes to minimize the cost and time to converge to a solution. Several of the most recent advances are discussed and compared with the enhancements in DeMAID/GA. An example of an aircraft conceptual design project is used to show how these enhancements can be applied to improve the design cycle.

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“…In addition, the model brings in a reengineering approach, named a banding algorithm to identify the "bands" of concurrent activities. As first raised by Grose [61], the banding algorithm helps to bind those contiguous elements of activities in aggregate as bands, which stand for the opportunities to accomplish some activities concurrently or in parallel so that iterations are supposed to be minimized and the final duration can be deeply shortened.…”

Section: Optimization Of the Ccdsm Modeling Mechanismmentioning

confidence: 99%

A Novel Method of Developing Construction Projects Schedule under Rework Scenarios

et al. 2019

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Construction projects have faced serious schedule delays caused by rework risks. However, it appears that traditional methods are of limited value in developing applicable project schedules. This study presents an analysis on construction projects schedule development under rework scenarios by a novel method named the improved critical chain design structure matrix (CCDSM). Research data are collected from a real estate development project in China. As a result, predictions of project completion duration and probability have been made. A reliable schedule considering information interactions has been developed and visualized. Rework impact areas of activities have been examined to quantitatively record the impact on project duration. To meet different demands, the method generates two more schedules setting different rework buffers. Furthermore, these activities have the potential of causing rework and have been quantified based on the calculation of two criticalities, providing an identification of rework-intensive works that should be payed close importance to, which have not be realized by previous methods. The results proved the feasibility and effectiveness of this method in developing a schedule for construction projects disturbed by rework, helping practitioners adopt measures to avoid rework-caused schedule delays and achieve sustainable development of such projects.

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Reengineering the aircraft design process

Cited by 22 publications

References 1 publication

Exploring the Structure of Complex Software Designs: An Empirical Study of Open Source and Proprietary Code

Exploring the Structure of Complex Software Designs: An Empirical Study of Open Source and Proprietary Code

Tools and Techniques for Decomposing and Managing Complex Design Projects

A Novel Method of Developing Construction Projects Schedule under Rework Scenarios

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