高级教练机总体设计方案优化选择

教练机研制过程中的一个主要考虑因素是提高效费比.介绍了评估教练机训练效能的作战分析法,研究了双三角机翼布局飞机空气动力特性的工程计算途径以及飞机性能指标的确定方法.然后以训练效能作为目标函数,采用多变量数值寻优方法,在战术技术指标及相关几何约束条件下,对某高级教练机的双三角机翼气动布局方案进行了优化选择.算例表明最优方案不仅比原准方案具有更高的训练效能,还改善了结构的受力情况,与工程实践吻合.

Optimization Selection in Conceptual Design of Advanced Trainer Aircraft

Improved cost efficiency ratio is a major factor considered in the development of trainer aircraft. Operational analysis was introduced as a method for evaluating training effectiveness of trainer aircraft. Approaches to the engineering estimation of aerodynamic characteristics for aircraft with double delta wings configuration were studied and the procedures for determining aircraft performance indices were formulated. Then, taking training effectiveness as an objective function, through numerical method for multivariate optimization, the conceptual design optimization selection of a certain advanced trainer aircraft with double delta wings configuration was accomplished under the constrains of tactical and technical requirements and interrelated geometry. Agreement of a calculation example with engineering practice indicates that the optimal design has higher training effectiveness than the baseline design, in addition to improve structural force bearing conditions.