Proceedings of the 10th Chinese Society of Aeronautics and Astronautics Youth Forum (Lecture Notes in Electrical Engineering, 972)

The Chinese Society of Aeronautics and Astronautics holds the Youth Science and Technology Forum biannually, which aims to assess the state of aviation science and technology, recognize advanced scientific and technological accomplishments, foster the development of young aviation science and technology talents, and provide a platform for young science and technology workers to track the frontier of science and technology, exchange novel ideas, and accurately meet the needs of the aviation industry. This book contains original, peer-reviewed research papers from the conference. Topics covered include, but are not limited to, navigation, guidance and control technologies, key technologies for aircraft design and overall optimization, aviation test technologies, aviation airborne systems, electromechanical technologies, structural design, aerodynamics and flight mechanics, other related technologies, advanced aviation materials and manufacturing technologies, advanced aviationpropulsion technologies, and civil aviation transportation. Researchers, engineers, and students find this book to be a useful resource because the articles provided here discuss the most recent advancements in aviation science and technology. Contents Experimental and Modeling Study of Open-Hole Composite Laminates Under Tension 1 Introduction 2 Experiment 3 Analytical Model 3.1 Damage and Failure Criteria 3.2 Degradation of Material Property 3.3 Finite Element Modeling 4 Result and Analysis 4.1 Damage Mechanism During Tension 4.2 Failure Strength Analysis 5 Conclusion References Research on Magnetic Tracking Algorithm Based on Double Transmitting Coils 1 Introduction 2 Method 2.1 Positioning Principle 2.2 Location Algorithm 2.3 Orientation Algorithm 3 Different Coil Opening Options 4 Build the Actual System 5 Conclusion References Research on Hardware Drive Circuit of Electro-Hhydraulic Servo Controller for Aircraft Steering Gear 1 Introduction 2 Theoretical Research 2.1 Functional Description 2.2 DAC Circuit Design 2.3 Analog Drive Circuit Design 3 Simulation Analysis 3.1 Simulation Parameter Setting 3.2 Simulation Model Construction 3.3 Analysis of Simulation Result 4 Experimental Verification 4.1 Setting up Test Environment 4.2 Test Procedure 4.3 Analysis of Test Results 5 Conclusion References Influence on the Flutter Characteristics of Hollow Fan Blade with Different Rib Number 1 Numerical Simulation Method 1.1 Energy Method 2 Calculation Model 3 Calculation Results and Discussion 4 Conclusion References Gas Ingestion Under Unsteady Rotor-Stator Interaction of Turbine Blade 1 Introduction 2 Computational Models and Numerical Approach 2.1 Geometries and Models 2.2 Numerical Approach and Boundary Condition 2.3 Validation of Numerical Model 3 Research and Discuss 4 Conclusions References Hypersonic Vehicle Control Based on Deep Reinforcement Learning 1 Introduction 2 Problem Description 2.1 Hypersonic Vehicle Modeling 2.2 Reinforcement Learning Method 3 Problem Description 3.1 Parameter Space Settings 3.2 Reward Function Settings 4 Emulation Proof 4.1 Analysis of Training Results 4.2 Longitudinal Plane Simulation Test 5 Conclusion References 3D Design Engine Developed for Aircraft Conceptual Design Phase Based on Visual Basic and OpenGL 1 Introduction 1.1 Aircraft Design Process 1.2 State of the Art 1.3 Development Environment 2 Methodology 2.1 Requirements and Capabilities 2.2 Frameworks 2.3 Coordinate Axis Definition and Projection Transform 2.4 Data Structure 2.5 Component Drawing 2.6 Mouse Operation 3 Application Examples 3.1 Conceptual Design Phase Aircraft Design 3.2 Solar Aircraft Design 3.3 Rotor and Propeller Design 4 Conclusion References Research on Testing Technology for Noise Certification of Civil Aircraft 1 Introduction 2 Noise Measurement System Architecture 2.1 The Architecture of Noise Measurement System for Small Propeller Aircraft 2.2 Helicopter Noise Measurement System Architecture 3 Method of Flight Test 3.1 Method of Propeller Small Aircraft Flight Test 3.2 Method of Helicopter Flight Test 4 Method of Track Measurement 4.1 Method of Photographic Ratio 4.2 Method of DGPS 5 Conclusion References Research on Relative Navigation Technology of Air-Borne Missile in Satellite Denial Environment 1 Overview 2 Cooperative Guidance Strategy of Air-Borne Missile 2.1 Master-Slave Collaboration Strategy 3 Relative Navigation Error Model 3.1 Inertial Navigation Error Equation 3.2 Relative Navigation State Equation 4 Measurement Model 4.1 Data Link Distance Measurement Model 4.2 Radar Relative Position Measurement 4.3 Radar Relative Velocity Measurement Model 5 Simulation Analysis 5.1 Construction of Simulation Environment 5.2 Simulation Conditions 6 Summary References Numerical Simulation of Air Flow Field in High-Speed Aviation Tank 1 Introduction 2 Air Flow Field Experiment in High Speed Aviation Tank 3 Numerical Simulation of Air Flow Field in High Speed Aviation Tank 3.1 Basic Principles of Numerical Simulation 3.2 Mesh Model and Computational Domain of High Speed Aviation Tank 3.3 Divide Mesh 4 Comparison Between Calculation Result and Experimental Result 5 Conclusions References Experimental Study on Low-Speed Wing Rock Characteristics of Low Aspect Ratio Flying Wing 1 First Section 2 Test Equipment and Model 2.1 Test Model 2.2 Wind Tunnel 2.3 Test Equipment 3 Test Results and Discussion 3.1 Static and Dynamic Derivative Test 3.2 Free-to-Roll Test 4 Conclusion References Study on Swaging Parameters and Vibration Characteristics of 0.25inch Civil Aircraft Hydraulic Pipe 1 Introduction 1.1 Swaging Definition 1.2 Research Status of Pipe Swaging Technology 1.3 Research Status of Pipe Vibration 1.4 Research Content of This Paper 2 Experiment 2.1 Preparation and Process of Experiment 2.2 Results and Analysis 3 Simulation and Discussion 3.1 Modeling and Modal Analysis 3.2 Analysis and Consistency Discussion of Simulation Results 4 Simulation and Discussion 4.1 Modeling and Modal Analysis 4.2 Model Analysis 4.3 Harmonic Response Analysis 5 Conclusion References Dynamic Modeling and Longitudinal Stability Analysis of a Stratospheric Dual-Hull Airship 1 Introduction 2 The Features of the Dual-Hull Airship Structure Design 3 The Dynamic Model of the Dual-Hull Airship 3.1 The Analysis of Forces and Moments 3.2 The Dual-Hull Airship Dynamic Modeling and Longitude Stability Analysis 4 The Dual-Hull AIRShip’s Features 5 Conclusions References Design of Pitch Angle Rate Control Law Based on L1 Adaptive Control Theory 1 Construction of the Controlled Object Model 2 Design of Pitch Angle Rate Control Law Based on L1 Adaptive Control Theory 2.1 Design of the State Predictor 2.2 Design of the Adaptation Lows 2.3 Design of the Low-Pass-Filter 2.4 L1 Control Structure and Parameter Setting 3 Simulation Comparison 3.1 Comparison of the Effect of L1 Adaptive Control in the Case of System Without and with Disturbance Factors 3.2 Comparison of the Effect of L1 Adaptive Control with Other Control Methods in the Case of System with Disturbance Factors 4 Conclusion References A Review of Electric Propulsion for Air Vehicle Research 1 Introduction 2 The Common Distributed Propulsion System 2.1 The Distributed Electric Propulsion is Located on the Leading Edge of the Wing 2.2 The Distributed Electric Propulsion is Located on the Trailing Edge of the Wing 3 Application and Effect of Electric Propulsion Aerodynamic Configuration 3.1 Normal Aerodynamic Configuration 3.2 Blended Wing Body Configuration 3.3 The Truss-Braced Wing (TBW) Configuration 4 Conclusions References Development of DNN Accelerator and Its Application in Avionics System 1 Introduction 2 Typical DNN Hardware Accelerator 3 Parallel Computing Structure of DNN Accelerators 4 DNN Accelerator with New Storage Structure 5 Design Requirements of Avionics-Specific DNN Accelerator 6 Conclusion References Research on Robust Adaptive Guidance Law Against Target Arbitrary Maneuvering 1 Introduction 2 Guidance Process Description 3 Design of Robust Guidance Law 3.1 Guidance Law Design 3.2 Guidance Law Stability Analysis 4 Implementation of Guidance Law 4.1 Chatter Adaptive Suppression 4.2 Simplification of Guidance Law 5 Simulation Results 5.1 Planar Simulation 5.2 Simulation in 6-DOF 6 Conclusion References Design for Brake Device of Rudder Pedal Based on Torsion Bar 1 Introduction 2 Mechanism Analysis of Brake Device 3 Principle of Brake Device Based on Torsion Bar 3.1 Principle of Brake Device 3.2 Torsion Bar and Supporting Mechanism 3.3 Brake Transmission Mechanism 4 Detailed Design of Brake Device Based on Torsion Bar 4.1 Composition of Brake Device 4.2 Detailed Design of Torsion Bar and Supporting Mechanism 4.3 Design of Brake Command Sensor 4.4 Kinematics Simulation Analysis of Brake Device 5 Weight Comparison of Brake Device 6 Conclusion References Calibration of Optical Testing System for Dynamic Impact Experiment of Aviation Seat 1 Introduction 2 Principle of Calibration Model 2.1 Calibration Content of High-Speed Camera 2.2 High-Speed Camera Imaging Model 2.3 Principle of Space Resection 3 Technical Scheme of High-Speed Camera Calibration 3.1 Technical Route of High-Speed Camera Calibration 3.2 Three-Dimensional Control Field Design 3.3 Space Resection Calculation Program Development 4 Test Validation and Analysis 4.1 Design of Verification Test Scheme 4.2 Verification and Analysis of Calibration Results 5 Conclusion References Flutter Analysis of Large Flexible Aircraft Based on Reduced Order Model 1 Introduction 2 Theory 2.1 Structural Reduced Order Model 2.2 Nonlinear Substructure Method 2.3 Aerodynamics Model 3 Numerical Results 3.1 Flying Wing Model 3.2 Numerical Results 4 Conclusions References Bending Properties of Representative Composite Aircraft Structures Under Oil Pressure 1 Introduction 2 Four-Point Bending 2.1 Structure of Test Specimens 2.2 Spar Cap Bending Testing 3 Bending Failure Analysis 3.1 Interlaminar Failure Model 3.2 Intralaminar Failure Model 3.3 Numerical Simulation Results 4 Conclusions References Impact Energy Absorption Features for Tensor-Skin Fuselage Box Structure 1 Introduction 2 Structure Style 2.1 Tensor-Skin Structure 2.2 Tensor Ply-Forming Process 3 Analysis of Fuselage Box Section Impact 3.1 Finite-element Model 3.2 Material Properties 3.3 Simulation Results 4 Conclusions References ADS-B Anomaly Detection Algorithm Based on LSTM-ED and SVDD 1 Introduction 2 Related Works 2.1 ADS-B Security Vulnerabilities 2.2 Anomalous Data Construction 2.3 Long Short‐Term Memory Encoder–Decoder 2.4 SVDD Classifier 3 ADS-B Abnormal Data Detection Algorithm Based on LSTM-ED-SVDD 3.1 Model Building 3.2 Model Training 3.3 Model Testing 4 Conclusions References Influence of the Nail Hole Adhesive Layer on Mechanical Properties of Bonded-Bolted Hybrid Joint 1 Introduction 2 Experimental Design and Preparation 2.1 Experimental Design 2.2 Preparation of Test Pieces 2.3 The Connection Process of the Test Piece 3 Experimental Procedure 4 Test Results and Analysis 4.1 Ordinary Bolts 4.2 High Lock Bolts 5 In Conclusion References Simulation Research on Air Distribution of Electronic Equipment Bay Ventilation System of Civil Aircraft 1 Introduction 2 Simulation Models and Boundary Condition 3 Simulation and Results Analysis 4 Conclusion References High Cycle Fatigue Properties and Fracture Behavior of TC4 Titanium Alloy at Room and Elevated Temperatures 1 Introduction 2 Material and Experimental Procedures 2.1 Materials 2.2 Experimental Procedures 3 Results and Discussion 3.1 Microstructure 3.2 High Cycle Fatigue Properties 3.3 High Cycle Fatigue Properties 4 Conclusions References Analysis on Architecture Design and Evaluation Technology of Civil Aircraft Fuel System 1 Overview 2 Fuel System Demand Capture and Confirmation 3 Functional Architecture Design of Fuel System 4 Design of the Physical Architecture of the Fuel System 4.1 Storage Subsystem 4.2 Distribution Subsystem 4.3 Measurement Subsystem 5 Simulation Evaluation of Fuel System 6 Fuel System Architecture Trade-Offs and Evaluation 7 Conclusion References Research on Beidou Short Message Interference and Power Optimization Control Method 1 Introduction 2 Beidou Short Message Interference 3 Fault Reproducing 4 Power Optimization Control Method 5 Conclusion References Robust Flutter Analysis Considering Control Surface Aerodynamic Uncertainty 1 Introduction 2 Uncertainty Modeling 3 Nominal Flutter Analysis 4 Robust Flutter Analysis 4.1 Robust Flutter Equation 4.2 - k Curve 5 Conclusion References Design and Performance Analysis of Aviation Axial Fan with Modified Variable Circulation Method 1 Introduction 2 Design of the Axial Fan with IGVs 2.1 Main Design Parameters 2.2 Modified Variable Circulation Formula 3 Numerical Method 4 Results and Discussion 4.1 Effects of the Prewhirl Parameter of IGVs on Fan Performance 4.2 Effects of Variable Circulation Index on Fan Performance 4.3 Effects of the Number of IGVs and Rotor Blades on Fan Performance 4.4 Optimal Design Outcome with Modified Variable Method 5 Conclusions References Geometrically Nonlinear Static Aeroelastic Analysis Based on CFD/CSD Interaction Accelerated by Panel Method 1 Introduction 2 Theoretical Development 2.1 Aerodynamic Analysis 2.2 Geometrically Nonlinear Structural Analysis 2.3 Surface Spline Interpolation 2.4 Modified Newton Iterative Algorithm for Nonlinear Aeroelastic Equation 3 Numerical Results 3.1 Model Description 3.2 Nonlinear Static Aeroelastic Analysis 4 Conclusion References Research on Design of New Low Frequency Broadband Electromagnetic Stealth Structure 1 Introduction of Stealth Technology 2 Scattering Characteristics and Typical Structure Analysis 3 Analysis of Low Frequency Scattering Characteristics 4 Design of Low Frequency Stealth Structure 4.1 Low Frequency Stealth Structure Design 4.2 Design of Surface Traveling Wave Suppression Structure 4.3 Performance Simulation of Low Frequency Stealth Integrated Structure 5 Verification of Low Frequency Stealth Structure 6 Conclusion References Optimization of Flight Procedure Method Based on Track Clustering 1 A Flight Trace Classification Model Based on the BP Neural Network 1.1 Build a Neural Network 1.2 Data Processing and Model Construction 1.3 Division of Inbound and Departure Routes 2 Trace Screening Together with k-Means-Based Trace Clustering 2.1 Abnormal Navigation Track Screening Model 2.2 Clustering Based on the k-means Algorithm 3 Analysis of Flight Track Clustering Results and Flight Program Optimization 4 Program Performance Verification 5 Conclusion References Simulation and Test Study on Composite Honeycomb Sandwich Panel 1 Introduction 2 Theoretical Model of Honeycomb Sandwich Structure 3 Simulation Analysis 3.1 Finite Element Simulation Analysis Model 3.2 Natural Frequencies of the Structure 3.3 Random Response of the Structure 4 Test Verification Results 4.1 Test Method 4.2 Comparison of Acceleration Response Results 4.3 Comparison of Strain Response Results 5 Conclusions References Guidance Law Design Against Unknown Maneuvering Target Based on Two ESOs 1 Introduction 2 Problem Formulation 3 SMC Guidance Law with ESO 3.1 ESO Design for Unknown Items 3.2 SMC Guidance Law Design Procedure 3.3 Stability Analysis 4 Simulation Results 5 Conclusions References Numerical Study on the Formation of Defects During Double Diaphragm Forming Using a Biaxial Non-crimp Fabric 1 Introduction 2 Fabric Material Model 2.1 Fabric Bending Behaviour 2.2 Non-orthogonal Constitutive Model 2.3 Curvature Updating 3 Process Simulation 3.1 Material Modelling 3.2 Process Modelling 4 Results and Discussion 4.1 Influence of Ply Orientation 4.2 Influence of Inter-ply Frictional Resistance 4.3 Influence of Component Spacing 5 Conclusion References Research on Three-Proofing Technology Based on PCBA of Airborne Electronic Equipment 1 Overview 2 Standard Requirements 3 Requirements for Three-Proofing Design 3.1 Design Link 3.2 Process Link 3.3 Cleaning 3.4 Shielding 3.5 Pre-heating 3.6 Coating 3.7 Curing 3.8 Touch-Up 3.9 Acceptance After Coating 3.10 Production Link 3.11 Environmental Requirements 3.12 Process Control 4 Conclusion References The Application and Research of Multi-core Processing in Avionics System 1 Introduction 2 Challenges of the Application of Multi-core Processor 2.1 The Architecture of Multi-core Processor 2.2 The Problem of Shared Resources 3 Research Development of Multi-core Processing in Avionics 4 The Promote Methods and Potential Solutions 4.1 The Test Result of AMP Mode Application 4.2 Low Critical Application 4.3 An Applicable Schedule Configuration for SMP 5 Conclusion References Research on Hierarchical Control Strategy of Aircraft Power Supply System 1 Preface 2 Airborne Power Supply Architecture and Hierarchical Control Strategy 2.1 Aircraft Power Supply System 2.2 Control Strategy Development and Hierarchical Control Strategy 3 Top-Level Control Strategy Based on Particle Swarm Optimization 4 Middle-Level Control Strategy and Bottom-Level Control Strategy 4.1 Middle-Level Control Strategy Based on Droop Control Strategy 4.2 The Underlying Control Strategy 5 Simulation Experiment and Result Data Analysis 6 Conclusion References Research on Electromagnetic Compatibility Technology Based on Airborne Electronic Equipment 1 Summary 2 Standard Requirements 3 Electromagnetic Compatibility Implementation and Design Principles 4 EMC Design 5 Basic Methods for EMC Design 6 Summary References Research on Lift Error of Horizontal Tail Based on Component Disassembly Method 1 Introduction 2 Comparison Between Simulation and Wind Tunnel Test 2.1 Wind Tunnel and Model 2.2 Simulation Method 2.3 Comparison Between Simulation and Wind tunnel Test 3 Study on the Error of Component Disassembly Method 3.1 Aerodynamic Analysis of Components Obtained by Component Disassembly Method 3.2 Comparison of Component Disassembly Method and Direct Measurement Results 3.3 Analysis on the Error of Component Disassembly Method 4 Influence of Horizontal Tail Position on the Accuracy of Disassembly Method 4.1 The Horizontal Tail Moves on the Fuselage 4.2 The Horizontal Tail Moves on the Vertical Tail 5 The Lift Obtained by Moment Inverse Calcultion Method 6 Conclusion References Influence of Temperature on the Ability of Flying Over Obstacles 1 Introduction 2 The Influence of Temperature on Aircraft Take off Obstacle Surmounting 3 Impact Analysis 4 Example Analysis 4.1 Jiangbei Airport, 737-800/CFM56-7B26 Model 4.2 Jiuhuang Airport, 737-700/CFM56-7B24 Model 5 Conclusion References A Theoretical Fatigue Acceleration Method for Polymer Composite Materials 1 Introduction 2 The Damage Model for the Matrix of UD Composite Material 2.1 The Constitutive Equation of Viscoelastic Materials 2.2 Damage Evolution Law for Viscoelastic Materials 3 Mechanical Behaviour Model of UD Composites 4 The Fatigue Acceleration of UD Composites 5 Application 6 Conclusion and Perspectives References Research on CBB Mechanism Construction of Technical Service Organization 1 Introduction 2 Knowledge Modularization Connotation 2.1 Definition of Knowledge Modularization 2.2 CBB Reuse Rate in Products 2.3 Mapping Relationship Between Products and CBB 3 Classification and Hierarchical Design 3.1 Classification of CBB 3.2 Hierarchy of CBB 4 Construction Path 5 Design of “EQUAl Responsibility and Right” 5.1 Stakeholders of CBB 5.2 Ownership and Protection of Intellectual Property Rights 5.3 CBB Use and Maintenance 5.4 Benefits Feedback Mechanism 6 Shared and Participating Platform Design 7 Typical Applications 7.1 The Predicament of Technical Service Institutions in the Military Industry 7.2 Exploration of an Aviation Research Institute 7.3 Initial Results 7.4 Benefits Feedback 8 Conclusion References Service-Oriented Intelligent Avionics System Architecture 1 Introduction 2 Related Work 2.1 Avionics System Architecture 2.2 SOA Architecture Research and Application Status 3 Service-Oriented Intelligent Avionics System Architecture 3.1 Overall Framework 3.2 Airborne Intelligent Chip Layer 3.3 Hashrate Abstraction Layer 3.4 Airborne Equipment Abstraction Layer 3.5 Airborne Service Capability Layer 3.6 Airborne Intelligent Application Atomic Service Layer 3.7 Service Intelligent Governance Layer 3.8 Airborne Intelligent Application Layer 4 Outlook 4.1 Airborne OTA 4.2 Drag-and-Drop Software Development 4.3 System Intelligence 5 Conclusions References A Guided-Wave Based Damage Diagnosing Method with Energy Spectrum and Multi-scale Network 1 Introduction 2 Sample and Model Design 2.1 Sample of Grey Scale 2.2 Data Augment 2.3 Multi-scale Network Design 2.4 The Model Configuration 3 Experiment 4 Discussion 4.1 The Selection of Kernel 4.2 The Generalizing Capability 4.3 The Advantage of Multi-scale Kernels 4.4 The Denoising Capability 5 Summary References Research on Health Monitoring and Intelligent Diagnosis Technology of Large-Scale Low-Speed Wind Tunnel 1 Introduction 2 Design of Health Monitoring System for Large-Scale Low-Speed Wind Tunnel 2.1 Identification of Wind Tunnel Monitoring Factors 2.2 Sensor Arrangement and Networking 2.3 Monitoring System Based on Sensor Network 3 Construction of Digital Twin System 3.1 3D Scene Digital Reconstruction 3.2 3D Digital Test Scene Mapping 3.3 Flow Field Visualization Technology Based on CFD Simulation Data 4 Research on Data Intelligent Diagnosis Technology Based on Equipment Parameters 4.1 Key Equipment Prediction Learning Machine Based on Machine Learning 4.2 Health Monitoring and Intelligent Diagnosis Algorithm 4.3 Implementation and Verification of Health Monitoring and Intelligent Diagnosis Technology 5 Conclusion References Progress of Study on the Application of Actuators in Helicopter Airframe ACSRs 1 Introduction 2 Actuators of Typical ACSRs 2.1 Centrifugal Inertial Actuator 2.2 Hydrostatic Pressure Actuator 2.3 Electromagnetic Actuator 2.4 Piezoelectricity Actuator 3 Conclusions and Prospect References Thermoelastic Analysis in Imperfect Rotating Functionally Graded Disks with Control Volume Finite Element Method 1 Introduction 2 Formulation of the Problem 3 Numerical Methods 4 Numerical Examples 4.1 Thermoelastic Analysis of FG Rotating Disk 4.2 FG Annulus with Porosities 5 Conclusions References A Survey of Few-Shot Learning for Image Classification of Aerial Objects 1 Introduction 2 Few-Shot Learning Based on Data 2.1 Ordinary Data Enhancement Methods 2.2 Add Weak-Labeled or Unlabeled Data 2.3 Add Generated Data 3 Few-Shot Learning Based on Model 3.1 Metric Learning Model 3.2 Meta-learning Model 4 Few-Shot Learning Based on Optimization 4.1 Parameter Optimization 4.2 Meta-learner Optimization 5 Development Trend and Application for Few-Shot Learning in Image Classification of Aerial Objects 6 Conclusion References Remaining Useful Life Prediction Method of Aero-Engines Based on LSTM 1 Introduction 2 LSTM Principle 3 The Proposed RUL Prediction Method Based on LSTM 3.1 Data Preprocessing 3.2 The Constructed LSTM Network 4 Validation 4.1 Evaluation Indicators of Prediction Performance 4.2 Data Set 4.3 Experimental Results and Discussion 5 Conclusions References The Optimization Design of Large-Camber Nozzle Based on Geometric Optimization 1 Introduction 2 Parametric Design and Geometric Optimization 3 Optimization Design of Non-camber Straight Nozzle 4 Optimization Design of Large-Camber Nozzle 5 Conclusion References An Offline Inverse Model for Identification of Multiple Pollutant Sources in Aircraft Cabins 1 Introduction 2 Methods 2.1 Construction of a Pollutant Transport Probability Matrix 2.2 Identification of Multiple Pollutant Sources 3 Case Description 4 Results 5 Conclusions References Research on Data System and Platform Architecture of Complex Aeronautical Equipment Development 1 Introduction 2 Analysis of Three BOM Management Modes 3 xBOM System Composition and Architecture 3.1 Composition of Full Life Cycle xBOM System 3.2 Multi-view Architecture Based on Dual BOM Infrastructure 4 xBOM Management Platform Architecture 5 Application and Discussion 6 Conclusion References Simulation of Electro-Impulse De-Icing Process Based on an Improved Ice Shedding Criterion 1 Introduction 2 Numerical Simulation Method 2.1 Ice Shedding Mechanism and Ice Shedding Criterion 2.2 Finite Element Model and Ice Shedding Failure Analysis Process 3 Numerical Simulation Results and Analysis 3.1 Simulation Methodology Validation 3.2 Ice Shedding Failure Criterion Analysis 3.3 Parametric Study 4 Conclusions References Resource Management in Cloud Computing Using Deep Reinforcement Learning: A Survey 1 Introduction 2 Resource Management 2.1 Overview of Could Computing and Its Scheduling 2.2 Cloud Resource Management Optimization Objectives 2.3 Resource Management Strategies 3 DRL Algorithm for Scheduling in Cloud Computing 4 Experiment and Evaluation 4.1 Experimental Datasets 4.2 Experimental Platform 4.3 Experimental Metrics 5 Research Challenges 6 Conclusion References Research on Analysis Architecture of Military Helicopter and Modeling Approach of Meta-Activity 1 Introduction 2 Architecture Analysis of Military Helicopter 3 Relationship of Mission, System-of-System, System and Measures 4 Analysis Architecture of Military Helicopter Requirements 5 Viewpoint of Military Helicopter Analysis Architecture 5.1 Mission Viewpoint (MV) 5.2 System-of-System Viewpoint (SoV) 5.3 System Viewpoint (SV) 5.4 Measure Viewpoint (MeV) 6 Modeling Approach of Meta Activity 6.1 Concept of Meta Activity 7 Modeling Rules of Meta Activity 8 The Analysis of Capability and Executive Conditions of Metal-Activity 9 Conclusion References Spatial Temporal Characteristics and Driving Forces of CHINA’s Aircraft Industry 1 Introduction 2 Indicator Selection, Data Sources and Methodology 2.1 Indicator Selection 2.2 Data Sources 2.3 Methodology 3 Spatial Temporal Characteristics of CHINA’s Aircraft Industry 3.1 Time Series Characteristics of the Aircraft Industry 3.2 The Spatial Temporal Pattern Evolution of the Aircraft Agglomeration 3.3 The Spatial Temporal Pattern Evolution in the Comprehensive Development Level 3.4 The Spatial Temporal Evolution in the Aircraft Industry Agglomeration and R&D Intensity 4 Conclusions and Implications References Flow Physics of a Top-Mounted Bump Inlet at Subsonic Cruise Condition 1 Introduction 2 Initial Configuration 3 Methodology 3.1 Experimental Approach 3.2 Numerical Approach 4 Results and Discussions 4.1 Performance Parameters and Surface Flow Patterns at Ma=0.8, AOA = 0° 4.2 Effect of AOA on the Performance of the Bump Inlet 5 Conclusion References Research and Implementation of Temperature Control Method for Large Space Climatic Laboratory 1 Introduction 2 Temperature Control System Model of Climatic Laboratory 2.1 The Composition of Temperature Control System 2.2 Modeling of Temperature Control System 2.3 Identification of the Model Parameters 3 Designation of Temperature Control System 3.1 Control Strategy 3.2 The Analysis of Temperature Control Algorithm 4 Application and Analysis 4.1 Parameters Tuning of PID Controller 4.2 Result Analysis 5 Conclusion References Equivalent Thermal Conductivity Improvement of Stator Winding and Thermal Benefit for Air-Cooled Electrical Aviation Machine 1 Introduction 2 Equivalent Thermal Conductivity of Stator Winding 3 Analytical Calculation of Equivalent Thermal Conductivity of Stator Winding 4 The Investigated Propulsion Motor and Thermal Modelling 4.1 The Investigated Propulsion Motor 4.2 Thermal Modelling of the Propulsion Motor 5 Thermal Benefits and Performance Benefits 6 Conclusion References The Research Status and Development of Military Aircraft Ground Support Equipment 1 Introduction 2 Development Process of Ground Support Equipment for Military Aircraft 3 Configuration Optimization of Ground Support Equipment for Military Aircraft 4 Standard System of Ground Support Equipment for Military Aircraft 5 Main Problems Existing in Ground Support Equipment 5.1 Insufficient Generalization of Support Equipment 5.2 Poor Environmental Adaptability 5.3 Difficult Transportation 5.4 Lack of Effective Information Management in Resource Allocation 6 Development Trend of Ground Support Equipment for Military Aircraft References Design of an Electronically Beam-Scanned High-Power Capacity Reflectarray Antenna Based on Liquid Crystals for Airborne Radar Application 1 Introduction 2 Design of Reflecting Unite 3 Design of Reflectarray 4 Conclusion References An Controller Workload Forecasting Method Based on Flight Plan 1 Introduction 2 Flight Plan Index Selection 3 Controller Load Evaluation Method 4 Controller Load Forecasting Based on Machine Learning 4.1 Data Acquisition 4.2 Model Building 4.3 Comparative Analysis of Models 5 Conclusion References Research of Lateral Guidance Law for Small Aircraft 1 Introduction 2 Aircraft Model 3 Lateral Guidance Law 3.1 Straight Path Guidance Law Design 3.2 Circle Path 3.3 Guidance Command 4 Simulation and Verification 4.1 Model Construction 4.2 Lateral Guidance Law Simulation 5 Conclusion References Development of Wind Tunnel Dynamic Test System Driven by Electro-hydraulic Servo Motor 1 Introduction 2 System Scheme Design 2.1 Hydraulic Motor Parameter Calculation 2.2 Electro-hydraulic Servo Valve Selection 2.3 Position Feedback Element Selection 2.4 Control System Hardware 3 Control Algorithm Design 3.1 Feedforward Control 3.2 Fuzzy Adaptive Control 4 System Verification 4.1 Control System Verification 4.2 Control System Verification 5 Conclusion References Study on Risk Control of the Horizontal Tail Coupling Flight Test 1 Introduction 2 Flight Test Method 3 Flight Test Risk Analysis 4 Risk Management of Horizontal Tail Jammed 5 Risk Management of Horizontal Tail Stall 6 Conclusion References Research on Precise Servo Control Technology for Integrated Aircraft Utility System 1 Introduction 2 Overall Design 3 Drive System Design with High-Reliability 3.1 Hardware Design 3.2 Power Drive Design Based on Inverse Time Protection 3.3 Fault Diagnosis Technology of Hierarchical Interface 4 High-Precision Stepper Motor Control Technology 4.1 Command Response Technology with High Deterministic 4.2 Constant Current Drive Technology Based on Fixed Duty Cycle 4.3 Segmented Startup Technology 5 Software Design 6 Experiments 7 Conclusion References Integral Sliding Mode Control for Antiskid Braking System of Unmanned Aerial Vehicles Based on Extended State Observer 1 Introduction 2 Mathematical Model of ABS for UAV 2.1 UAV Mathematical Model 2.2 Slip Ratio Model 3 Extended State Observer Design 4 Controller Design 5 Simulation Results 5.1 Ideal Condition 5.2 Step Reduction of Braking Torque 5.3 Road Changed Suddenly 5.4 Parameter High-Low Bias 6 Conclusions References Study on Mechanical Environment Analysis Method of Aircraft Cabin 1 Introduction 2 Calculation of Aerodynamic Noise Load on Cabin Surface 2.1 Nonlinear Acoustic Equation and Its Numerical Solution 2.2 Calculation Process 3 Calculation of Cabin Low Frequency Response 3.1 Structural Vibration Calculation 3.2 Acoustic Response Calculation 4 Calculation of Cabin High Frequency Response 4.1 Basic Theory of Statistical Energy Method 4.2 Calculation Results 5 Conclusions References Author Index