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Multi-criteria decision making method for airplane design economic affordability evaluation process

A technology of aircraft design and decision-making methods, applied in calculation, special data processing applications, instruments, etc., can solve the problems of increased aircraft uncertainty, increased development cycle and development cost, etc.

Active Publication Date: 2015-06-03
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

[0002] The improvement of aircraft design requirements leads to the adoption of more new technologies in the design of aircraft, and the increase of aircraft development cycle and development cost, resulting in increased uncertainty in the process of aircraft development

Method used

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  • Multi-criteria decision making method for airplane design economic affordability evaluation process
  • Multi-criteria decision making method for airplane design economic affordability evaluation process
  • Multi-criteria decision making method for airplane design economic affordability evaluation process

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Embodiment Construction

[0071] The present invention will be further described in detail below in conjunction with accompanying drawings and examples.

[0072] The following examples are based on figure 1 The process shown is implemented. The parameter sampling of the case in this paper is based on the relevant parameters of the F-16A and F-16C fighters in the "World Aircraft Handbook (2000)", based on expert experience and relevant historical data. Random distribution is assigned to the uncertain parameters, so as to carry out sampling calculation. This method provides an effective way for the analysis and evaluation of economic affordability. In instance verification, step 2 applied the figure 2 As shown in the structural model for technical feasibility analysis of aircraft design, Step 3 applies the image 3 Shown is the structural model for the affordability analysis of the aircraft design.

[0073] Below are some basic parameters of F-16A and F-16C.

[0074]

[0075] The above table list...

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Abstract

A multi-criteria decision making method for an airplane design economic affordability evaluation process includes step 1, determining design variables and fixed parameters of airplane design, and optionally distributing the design variables to reflect indeterminacy of a design stage; step 2, taking main design parameters as analytic objects, and checking the probability of technological feasibility of a design scheme; step3, on the basis of a technological feasibility analysis result, checking the probability of expense affordability of the design scheme; step 4, if the design scheme is feasible in terms of airplane design technology and is receptible in terms of economic affordability, determining that the design scheme is receptible. Fuzzy interval number and RD (robust design) are combined organically on the basis of probability technology to create the probability multi-criteria decision making method based on the fuzzy interval number and the RD.

Description

technical field [0001] The invention relates to a multi-criteria decision-making method suitable for the evaluation process of aircraft design economic affordability, also called Multiple Criteria Decision Making, MCDM for short, and belongs to the technical field of economic affordability. Background technique [0002] The improvement of aircraft design requirements leads to the adoption of more new technologies in the design of aircraft, and the increase of aircraft development cycle and development cost, which leads to the increase of uncertainty in the process of aircraft development. Therefore, the influence of uncertain factors must be fully considered in the process of aircraft design. [0003] In the process of evaluating the economic affordability of aircraft design, multiple constraint criteria are involved. Based on probability technology, the present invention organically combines fuzzy interval numbers and robust technology (also known as Robust Design, referred...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 周晟瀚常文兵董健瑞
Owner BEIHANG UNIV
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