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Research on Maintainability and Ergonomics Design for Civil Aircraft

Author: WangWei
Tutor: SunYouChao
School: Nanjing University of Aeronautics and Astronautics
Course: Vehicle Operation Engineering
Keywords: Maintainability and ergonomics design Synchronous design System engineering process Grey incidence analysis Collision detection Maintenance therblig Work load Huffman code
CLC: V267
Type: Master's thesis
Year: 2009
Downloads: 122
Quote: 1
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Abstract


In the past decades, ergonomics design has become the one of most important research contents in maintainability design for civil aircraft. So ergonomics design has been great considered by aircraft designers and engineers. Based on the theories of maintainability design and ergonomics design, a new concept of maintainability and ergonomics synchronous design is herein presented for civil aircraft, including the following aspects: systems engineering process modeling of synchronous design, optimizing the parameter system of maintainability and ergonomics design, simulation techniques of maintainability and ergonomics attributes, and so on.In order to match the traditional maintainability design flow, one system engineering process model of maintainability and ergonomics design for civil aircraft is herein presented. Through discoursing the basic idea and content of Hall methodology, concurrent engineering, Checkland’s“learning survey”method, integration method and WSR methodology, which are the most representative systems engineering methodologies, improvements have been made to Hall three-dimensional structure model whose professional dimension operation is not strong, by expanding the professional dimension to“Supporting dimension, organizational dimension, technological dimension and management dimension”. A multi-dimensional structure model of systems engineering SEMDM and its activity matrix is established. Finally, using process modeling tools IDEF0, the system engineering process model of maintainability and ergonomics design for civil aircraft is completed, with the analysis of input and output information flow.According to the concurrent design of multiple facets for complex system, a new thought for establishment of maintainability and ergonomics parameter system is presented. Firstly, ergonomics design standard of domestics and abroad is analyzed; the determination of maintainability and ergonomics requirement is studied with consideration of many design constraints such as maintainability, ergonomics, airworthiness regulation, predetermined advanced technology, maintenance program of different level. Secondly, in terms of maintainability and ergonomics datum in different design state, the relationship between different maintainability and ergonomics requirements is studied based on grey correlation analysis method and unifying the distance calculation formula of real number, interval number and fuzzy number. Maintainability and ergonomics design indices system is established and optimized based on“man-machine-environment”system engineering theory.According to the analysis and simulation of maintainability and ergonomics parameters flow based on virtual reality, collision detection algorithm which based on Huffman code, time prediction model based on maintenance therblig and workload prediction model based on VMS are proposed in this paper. For rigid models and deformed models, collision detection accuracy problem is solved in the virtual maintenance environment and work space layout simulation. The problem of establishing maintenance time standard is solved though analyzing time conversion relations between maintenance therblig and MODAPTS. By picking up different actions data of virtual body and calculating its energy metabolism in maintenance simulation process, the work load of virtual body is estimated directly so that the problem of no response to virtual body’s physiological change is solved in virtual simulation environment.

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CLC: > Aviation, aerospace > Aviation > Aeronautical Manufacturing Technology > Maintenance and repair of aircraft
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