A Comparative Study of Cost Estimation Models used For Preliminary Aircraft Design

A Comparative Study of Cost Estimation Models used For Preliminary Aircraft Design

Rashid Ali

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Omran Al-Shamma

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GJRE Volume 14 Issue B4

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The objective of our study was to evaluate, in a population of Togolese People Living With HIV(PLWHIV), the agreement between three scores derived from the general population namely the Framingham score, the Systematic Coronary Risk Evaluation (SCORE), the evaluation of the cardiovascular risk (CVR) according to the World Health Organization.

Estimation of the direct operating cost (DOC), seat mile cost (SMC) and price of the aircraft, is an important aspect in commercial transport aircraft design. The operating costs are classified into two categories which are direct operating cost (DOC) and indirect operating cost (IOC). IOC is difficult to estimate well, since it depends on the services that the airline (customer) offered, and can vary considerably between operators. Therefore, DOC is useful and widely-used parameter for comparative analysis. Many methodologies have been developed to estimate DOC. There are three common methodologies that are in use in preliminary aircraft design. These models, namely the ATA, NASA and the AEA form the basis of cost estimation. In the preliminary aircraft design stage, cost estimates are required to evaluate the viability of the design being considered. This paper presents the cost estimation methodology of these three methods and compares the estimated costs for a range of current aircraft. The paper also presents a new empirical relationship for estimating the DOC.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Omran Al-Shamma. 2014. \u201cA Comparative Study of Cost Estimation Models used For Preliminary Aircraft Design\u201d. Global Journal of Research in Engineering - B: Automotive Engineering GJRE-B Volume 14 (GJRE Volume 14 Issue B4): .

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GJRE Volume 14 Issue B4
Pg. 9- 18

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords

aircraft cost estimation aircraft design doc estimation doc methods

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Submission ReceivedDecember 11, 2013
RevisedDecember 11, 2013
Peer Review Double Blind
Handling Editor
Accepted January 3, 2014
Published January 15, 2014

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December 1, 2014

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English

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Article Matrices

Total Score: 132

Country: United Kingdom

Subject: Global Journal of Research in Engineering - B: Automotive Engineering

Authors: Rashid Ali, Omran Al-Shamma (PhD/Dr. count: 0)

View Count (all-time): 193

Total Views (Real + Logic): 4272

Total Downloads (simulated): 2134

Publish Date: 2014 12, Mon

Monthly Totals (Real + Logic):

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Total Views: 4272

Total Downloads: 2134

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