2018/4/27 圆上活发大学 Overview of Lectures 国上游大峰 ·O.Overview 14/15 Performance(a,b) ·Introduction 16.Aircraft certification Overall configuration 17.Aviation economics Preliminary weight estimation uoent Refined weight estimation Aircraft Design 19.Multidisciplinary design Fuselage design cotimization (飞行器设计) 6/7/8 Aerodynamic design(a,b,c) 20.Military aircraft design- overview Thrust/Weight ratio and wing loading Landing gear and Aircraft systems 21.Environmental issues 22.Desian skilks Power plant Wenbin Song Stability and control School of Aeronautics and Astronautics Loads,materials and structures Wenbin Song Overview 国上活大学 Structural Design Requirements 国上泽夫大坐 Structural design requirements and criteria Maximum inherent safety Loads triangle-disciplines influencing the flight loads Superior performance in terms of weight and durability Categories of aircraft loads Minimum costs of production and ownership Evolution of design criteria To achieve these goals,it is necessary to have Fail safe desion -Intimate understandingof operating environments -Damage tolerancedesign -Knowledgeon materialand structural behaviour -Fatique -Accurate prediction tools(FEM,etc) Structural analysis ·Material selections ·Future trends Factors affecting structural loads 国上天大学 Principle Structural Design Criteria 圆上萨大峰 -stiffness distribution Design bad mass distribution -aerodynamic distribution Structural Fasteners PLUS Design Criteria -flight control system ero Fail Safcty/ Ref:Jeff JUPP.2010 5扫e城 12018/4/27 1 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Wenbin Song School of Aeronautics and Astronautics Shanghai Jiao Tong University swb@sjtu.edu.cn Aircraft Design （飞行器设计） © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Overview of Lectures • 0. Overview • Introduction • Overall configuration • Preliminary weight estimation • Refined weight estimation • Fuselage design • 6/7/8 Aerodynamic design(a, b, c) • Thrust/Weight ratio and wing loading • Landing gear and Aircraft systems • Power plant • Stability and control • Loads, materials and structures 14/15 Performance(a, b) 16.Aircraft certification 17.Aviation economics 18.System integration and configuration management 19.Multidisciplinary design optimization 20.Military aircraft design – overview 21.Environmental issues 22.Design skills © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Overview • Structural design requirements and criteria • Loads triangle – disciplines influencing the flight loads • Categories of aircraft loads • Evolution of design criteria – Fail safe design – Damage tolerance design – Fatigue • Structural analysis • Material selections • Future trends © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Structural Design Requirements • Maximum inherent safety • Superior performance in terms of weight and durability • Minimum costs of production and ownership • To achieve these goals, it is necessary to have – Intimate understanding of operating environments – Knowledge on material and structural behaviour – Accurate prediction tools (FEM, etc) © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Factors affecting structural loads - stiffness distribution - mass distribution - aerodynamic distribution PLUS - flight control system Elastic Aero Stability & Control Flutter dynamic manoeuvre loads dynamic loads response Ref: Jeff JUPP, 2010 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Principle Structural Design Criteria 6 Structural Design Criteria Discrete events Design loads Materials/ Fasteners Static Strength Stiffness Durability Damage tolerance/ Fail Safety/ Safe life Crashworthiness Manufacturability Maintainability performance Cost Safety