Modelling of aircraft manufacturing cost at the concept stage

Curran, Richard; Kundu, Ajoy Kumar; Wright, Jim; Crosby, Stephen; Price, Mark; Raghunathan, Srinivasan; Bénard, Emmanuel

doi:10.1007/s00170-005-0205-8

Cited by 24 publications

(10 citation statements)

References 9 publications

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“…In literature, research on cost modelling is rich and varied, both from a general perspective (as discussed in Section 2.1) and from more applied perspectives, for instance through-life costing (Curran et al 2003(Curran et al , 2007b(Curran et al , 2008a, manufacturing cost estimation (Curran et al 2006a(Curran et al , 2006b(Curran et al , 2008c and composite material costing (Curran et al 2008b In fact, the cost model addresses the medium level of fidelity gap that has been identified in Section 2.1. Furthermore, its results enable the parameterisation of the costs and times associated with the discrete manufacturing processes for composite parts.…”

Section: Cost Model Evolutionmentioning

confidence: 98%

Knowledge-based cost modelling of composite wing structures

Verhagen

García²,

Mariot³

et al. 2012

International Journal of Computer Integrated Manufacturing

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The progressive industrialisation of composite-built aircraft is putting manufacturing engineers on a steep learning curve. An opportunity exists to use knowledge management tools to capture, share and reuse knowledge over multiple aircraft programs and maintain the constant flow of learning gained during aircraft program delivery. This article reports on research to develop a knowledge-based cost modelling capability for composite part concept evaluation. The approach integrates a knowledge management environment with a process-based cost estimation tool encoded in very large spreadsheets. To achieve this, the complexity of the cost model is managed by modularising it into simple, re-useable components. The knowledge management environment is then used to manage the knowledge life cycle, knowledge exploitation and knowledge visibility of those components. The result is a flexible cost modelling tool composed of traceable, verifiable and reliable knowledge elements that provides through-life knowledge support for cost engineering. Validation is achieved through functional application of the solution for composite wing top cover cost modelling.

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Section: Cost Model Evolutionmentioning

confidence: 98%

Knowledge-based cost modelling of composite wing structures

Verhagen

García²,

Mariot³

et al. 2012

International Journal of Computer Integrated Manufacturing

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“…In the past, aerospace product prices were simply based on cost plus profit plus contingency, as the market was not very competitive (Curran et al, 2006). The aerospace industry was therefore not forced to fully understand and reduce its cost base.…”

Section: Costing Within the Aerospace Industrymentioning

confidence: 99%

“…The aerospace industry was therefore not forced to fully understand and reduce its cost base. Consequently, only a few cost experts dealt with cost estimation for highlevel bidding processes or detailed process-time-based models (Curran et al, 2006).…”

Section: Costing Within the Aerospace Industrymentioning

confidence: 99%

“…Within the last 15 years, however, market pressure from low cost airlines and reduced government defence budgets have forced aerospace companies to adapt to the conventional rule of profit which is price minus total cost (Curran et al, 2006). This, and the emergence of long-term 'power by the hour' service contracts provided by companies such as Rolls-Royce (R-R), has increased the interest of gas turbine manufacturers in reducing and controlling their manufacturing costs (Scanlan et al, 2006).…”

Section: Costing Within the Aerospace Industrymentioning

confidence: 99%

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An activity-based-parametric hybrid cost model to estimate the unit cost of a novel gas turbine component

Langmaak

Wiseall

Bru

et al. 2013

International Journal of Production Economics

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The first tool presented in this paper is a generic factory cost model that can estimate various costs at multiple levels of any manufacturing plant. The model is activity-based which means that the cost of each manufacturing operation is calculated and then summed up so that the true £-per-hour factory cost rate as well as the exact unit cost (i.e. manufacturing cost) of an unlimited number of different components can be estimated.The second tool is a scalable cost model that estimates the unit cost of future integrally bladed disc (blisk) designs which are used by the aerospace industry in gas turbine compressors. The tool multiplies the machine cost rates, calculated by the factory cost model, by the operation times derived from blisk scaling rules. As the operation times often depend on the number of blades, the disc diameter and other design variables, many scaling rules are based on the correlation between operation times and certain design parameters. Conversely, the remaining process times are constant because they are independent of the blisk geometry. As future process times can only be estimated and the correlation between operation times and design parameters is never perfect, all operation times have uncertainty distributions. These are cascaded through the model to generate a probability distribution of the unit cost.Through the interactive exchange of detailed cost information at the manufacturing operation level as well as extrapolated operation times, the two cost models facilitate design and manufacturing engineering to concurrently optimise blisk designs and manufacturing processes in terms of cost.

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“…According to International Civil Aviation Organization the sort of aircraft competitive factors are economic, reliability, maintainability, passenger comfort, aircraft technical performance, customer service, financial support and aircraft series. Boeing forecasts the future of low fuel consumption of aircraft will win greater market [1]. From the history of development of world aviation industry, Boeing and Airbus aircraft will improve economics as an important means to enhance competitiveness.…”

Section: Introductionmentioning

confidence: 99%

The Research on Aircraft Economic Design

Gao¹

2014

Proceedings of the 2014 International Conference on Mechatronics, Electronic, Industrial and Control Engineering

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Economics affordability like safety, reliability, maintainability, is the inherent attributes of aircraft. Total life cost is the main economic index for aircraft. Active economic design for aircraft shows cost as independent variable. And economic design should consider total cost throughout the product development including design, manufacture, use and maintenance. In the paper, the multilevel modular analysis model on total life cycle cost has been presented. The main dimension of aircraft economics design has been analyzed, including pneumatic design, composite materials design and oriented-maintenance design. Combination prediction model of life cycle cost for aircraft with fuzzy and uncertain information has been built. The aircraft economics design by collaborative optimization has been presented by multidisciplinary optimization. The aircraft integrated economics design has been discussed, including the framework and relevant technology of aircraft integrated design. The research result can also be used to other complex systems, such as weapon systems.

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Modelling of aircraft manufacturing cost at the concept stage

Cited by 24 publications

References 9 publications

Knowledge-based cost modelling of composite wing structures

Knowledge-based cost modelling of composite wing structures

An activity-based-parametric hybrid cost model to estimate the unit cost of a novel gas turbine component

The Research on Aircraft Economic Design

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