The Evaluation Study Of Aircraft Type And Its Equipment Selectable Scheme

The selection of airplane type is a multi-aids course, linked with many factors, including the reliability of the aircraft scheme and equipment, also the economy, applicability, etc. The plane selection can directly affect the manufacturing, maintenance and repairing cost, therefore is an important step in plane system designing.This article outlined content and concrete process of airplane type and equipment selection. Based on the reliability evaluation, an improved reliability distribution optimization model was proposed according to importance analysis. Based on the economy theory, the mathematics models of each income and expenditure during the full life-cycle of airplane were established, and a method to optimize the type-selection according to Life Cycle Cos was given out, the practical examples designed to make concrete analysis respectively. Besides, comprehensive evaluation methods for airplane type selection were studied, a new evaluation model was proposed based on Multi objective Decision-Making. As to the key equipment type selection of airplane system, a new decision model based on reliability-economic efficiency was proposed, with the practical examples to verify the accuracy of models respectively.This research can provide evaluation methods for type and equipment selection and reduce the subjective of decision, also more scientific and comprehensive,with important theoretical significance and practical value to plane system designing.