高机动变体飞机总体参数设计

Primary Parameter Design of High Maneuverable Morphing Aircraft

变体飞机作为一种新概念飞行器,涉及气动、结构、材料、控制等多学科,是先进飞行器重要发展方向,其开创性地应用各种新型变形技术,实现飞机构型与飞行环境、飞行状态、作战任务相匹配,最大限度发挥构型优势,具备传统飞机无法实现或者无法以同等性能实现的能力。变体飞机在拓展作战飞机能力边界的同时也提升了设计难度,尤其是针对高机动作战类变体飞机的总体参数设计。从变体飞机的性能优势与技术推动两个方面阐述变体飞机发展的必然趋势;从战技指标高、性能约束耦合复杂及初始数据要求繁多且精确三个角度分析了变体飞机总体参数设计阶段面临的问题及难点;梳理了变体飞机总体参数设计流程、初始参数选择方法、空战类飞机常用性能约束条件及设计点选择分析方法,之后通过尾翼变体飞机总体参数设计实例,验证总体参数设计流程,选取总体参数组合满足总体指标要求;最后给出变体飞机总体参数设计后续工作与思考。

As an important direction of advanced aircraft,morphing aircraft involves many disciplines such as aerodynamics,structure,materials and control.It creatively applies various new technologies to realize the matching of aircraft configuration with flight environment,flight status and combat tasks.Different from traditional aircraft,morphing aircraft maximizes configuration advantages.Morphing aircraft not only expands the capability boundary of combat,but also improves the design difficulty,especially the primary parameter design of highly maneuverable combat morphing aircraft.This paper expounds the inevitable trend of variant aircraft development from two aspects:performance advantages and technical promotion.Firstly,the problems and difficulties in the overall parameter design stage of variant aircraft are analyzed from three aspects:High technical performance,complex performance constraint coupling and various accurate initial data requirements.Secondly,primary parameter design process,initial parameter selection method,common performance constraints and design point selection analysis method of morphing aircraft are combed.Then,the primary parameter design process is verified by the example of tail morphing aircraft,and the primary parameters meet the overall performance requirements.Finally,the follow-up work and thinking on the overall parameter design of variant aircraft are given.