Achievements

International Journal

  1. International Journal · Published

    Design and Flight Demonstration of an Ornithopter: Enhancing Endurance and Payload via Neural Network Surrogate-Based Optimization

    Ko, H.-S., Yang, H.-H., Lee, S.-G., Lee, E.-H., Lim, J. H., Han, J.-H.

    Aerospace Science and Technology, 180, Part 4: 113909 · 2027

    DOI10.1016/j.ast.2026.113909

  2. International Journal · Published

    A Biologically-Inspired Flapping-Wing Air Vehicle with Active Folding-Wings

    Lee, E.-H., Yang, H.-H., Lee, S.-G., Han, J.-H.

    IEEE Robotics and Automation Letters, 11(3): 2786-2793 · 2026

    DOI10.1109/LRA.2026.3653275

  3. International Journal · Online-Published

    Avian-Scale Flapping-Wing Air Vehicle with Independent Actuation Mechanism for Enhanced Lateral Maneuverability

    Lee, S.-G., Yang, H.-H., Lee, E.-H., Ko, H.-S., Han, J.-H.

    IEEE/ASME Transactions on Mechatronics · 2026

    DOI10.1109/TMECH.2026.3688743

  4. International Journal · Published

    The Effect of Mechanism-Driven Spanwise Folding Kinematics on the Aerodynamic Performance of Flapping Wings

    Yang, H.-H., Lee, S.-G., Han, J.-H.

    Bioinspiration & Biomimetics, 21(5): 056007 · 2026

    DOI10.1088/1748-3190/ae8a9d

  5. International Journal · Published

    Numerical Simulation Framework of Bird-Inspired Ornithopter in Forward Flight

    Yang, H.-H., Lee, S.-G., Lee, E.-H., Han, J.-H.

    Journal of Fluids and Structures, 133: 104263 · 2025

    DOI10.1016/j.jfluidstructs.2024.104263

  6. International Journal · Published

    Gravity-Assisted Takeoff of Bird-Inspired Flapping-Wing Air Vehicle Using Cliff-Drop

    Lee, S.-G., Yang, H.-H., Lee, E.-H., Han, J.-H.

    Journal of Bionic Engineering, 22(1): 144-156 · 2025

    DOI10.1007/s42235-024-00615-2

  7. International Journal · Published

    Parameter Optimization of Foldable Flapping-Wing Mechanism for Maximum Lift

    Yang, H.-H., Lee, S.-G., Addo-Akoto, R., Han, J.-H.

    Journal of Mechanisms and Robotics, 16(3): 031002 · 2024

    DOI10.1115/1.4056869

  8. International Journal · Published

    Twist-Coupled Flapping Mechanism for Bird-Type Flapping-Wing Air Vehicles

    Han, Y.-J., Yang, H.-H., Han, J.-H.

    Journal of Mechanisms and Robotics, 15(5): 051017 · 2023

    DOI10.1115/1.4062339

  9. International Journal · Published

    Wing Flexibility Effect on Aerodynamic Performance of Different Flapping Wing Planforms

    Addo-Akoto, R., Yang, H.-H., Han, J.-S., Han, J.-H.

    Journal of Fluids and Structures, 123: 104006 · 2023

    DOI10.1016/j.jfluidstructs.2023.104006

  10. International Journal · Published

    A Review of Flapping Mechanisms for Avian-Inspired Flapping-Wing Air Vehicles

    Han, J.-H., Han, Y.-J., Yang, H.-H., Lee, S.-G., Lee, E.-H.

    Aerospace, 10(6): 554 · 2023

    DOI10.3390/aerospace10060554

  11. International Journal · Published

    Transition Flight Trajectory Optimization for a Flapping-Wing Micro Air Vehicle with Unsteady Vortex-Lattice Method

    Lee, S.-G., Yang, H.-H., Addo-Akoto, R., Han, J.-H.

    Aerospace, 9(11): 660 · 2022

    DOI10.3390/aerospace9110660

  12. International Journal · Published

    Design and Prototyping of Rotational Bi-Stable Mechanism Using Permanent Magnets

    Yang, H.-H., Han, J.-H.

    Journal of Mechanisms and Robotics, 13(5): 051004 · 2021

    DOI10.1115/1.4050295

  13. International Journal · Published

    Study on Robust Aerial Docking Mechanism with Deep Learning Based Drogue Detection and Docking

    Choi, A. J., Yang, H.-H., Han, J.-H.

    Mechanical Systems and Signal Processing, 154: 107579 · 2021

    DOI10.1016/j.ymssp.2020.107579

Domestic Journal

  1. Domestic Journal · Published

    Design and Fabrication of Servo-Driven Bird-Inspired Flapping-Wing Air Vehicle

    Lee, E.-H., Yang, H.-H., Lee, S.-G., Han, J.-H.

    Journal of the Korean Society for Aeronautical and Space Sciences, 52(3), pp. 167-174 · 2024

    DOI10.5139/JKSAS.2024.52.3.167

  2. Domestic Journal · Published

    Design of Bi-Stable Mechanism Using Cylindrical Permanent Magnets

    Yang, H.-H., Choi, J.-Y., Han, J.-H.

    Journal of the Korean Society for Aeronautical and Space Sciences, 48(5), pp. 343-354 · 2020

    DOI10.5139/JKSAS.2020.48.5.343

International Conference

  1. International Conference · Oral

    LLM-Assisted Conversational Design of Dual-Arm Space Robot via Retrieval-Augmented Simulation Knowledge

    Yang, H.-H., Jang, K.-I., Jung, E.-H., Han, J.-H.

    3rd IAA Conference on AI in and for Space (IAA SpaceAI 2026), Jeju, Republic of Korea, Aug. 26-28 · 2026

    Best Student Paper Award

  2. International Conference · Oral

    Structural-Optical Trade-Off Analysis of a Foldable Fresnel Zone Plate with Perforated Crease Patterns

    Seong, Y.-W., Yang, H.-H., Kim, H.-J., Han, J.-H.

    AIAA ASCEND 2026, Washington, D.C., USA, May 19-21: AIAA 2026-3021 · 2026

  3. International Conference · Oral

    Experimental Validation of Integrated Flapping-Wing Simulation Model with Wind Tunnel Testing

    Ko, H.-S., Yang, H.-H., Han, J.-H.

    The 2025 Asia-Pacific International Symposium on Aerospace Technology, Seoul, Republic of Korea, Oct. 27-29 · 2025

  4. International Conference · Oral

    Capture and Attitude Takeover Control Simulation for On-Orbit Servicing by Space Robot

    Jang, K.-I., Yang, H.-H., Han, J.-H.

    76th International Astronautical Congress, Sydney, Australia, Sep. 29 - Oct. 3: IAC-25-C2.3.3.x96452 · 2025

    DOI10.52202/083088-0020

  5. International Conference · Oral

    Feasibility of a Prestressed Woven Structure as an Impact Mitigation Device in Active Debris Removal

    Jung, E.-H., Jang, K.-I., Jung, S., Yang, H.-H., Han, J.-H.

    76th International Astronautical Congress, Sydney, Australia, Sep. 29 - Oct. 3: IAC-25,A6,6,5,x99289 · 2025

    DOI10.52202/083079-0044

  6. International Conference · Oral

    Prediction of Maximum Flapping Frequency of a Flapping Wing Using Unsteady Vortex Lattice Method and Finite Element Method

    Lee, S.-G., Yang, H.-H., Han, J.-H.

    31st International Congress on Sound and Vibration, Incheon, Republic of Korea, Jul. 6-11: 291 · 2025

  7. International Conference · Oral

    Multidisciplinary Design Optimization of the Flapping-Wing Air Vehicle Using Artificial Neural Network Surrogate Model

    Ko, H.-S., Yang, H.-H., Lim, J.-H., Han, J.-H.

    SPIE SS+NDE 2025, Vancouver, Canada, Mar. 17-20: 1343006 · 2025

    DOI10.1117/12.3051875

  8. International Conference · Oral

    Dynamic Simulation of Docking Process between On-Orbit Servicing and Target Satellite

    Jang, K.-I., Yang, H.-H., Han, J.-H.

    The 11th Asian Conference on Multibody Dynamics 2024, Suwon, Gyeonggi-Do, Korea, Aug. 25-29 · 2024

  9. International Conference · Oral

    Development of a Servo-Driven Flapping-Wing Air Vehicle with Folding-Wing Mechanism

    Lee, E.-H., Yang, H.-H., Lee, S.-G., Han, J.-H.

    34th Congress of the International Council of the Aeronautical Sciences, Florence, Italy, Sep. 9-13 · 2024

  10. International Conference · Oral

    Integrated Simulation Program for Initial Design of Bird-Inspired Ornithopter

    Yang, H.-H., Lee, S.-G., Lee, E.-H., Han, J.-H.

    14th Annual International Micro Air Vehicle Conference and Competition, Aachen, Germany, Sep. 11-15, pp. 26-32 · 2023

  11. International Conference · Oral

    Design and Path Following Flight Test of a Flapping-Wing Air Vehicle

    Lee, S.-G., Yang, H.-H., You, H., Han, J.-H.

    14th Annual International Micro Air Vehicle Conference and Competition, Aachen, Germany, Sep. 11-15, pp. 20-25 · 2023

  12. International Conference · Oral

    Optimal Hovering Wing Kinematics of Flapping-Wing Model Using Reinforcement Learning

    Yang, H.-H., Lee, S.-G., Han, Y.-J., Han, J.-H.

    33rd Congress of the International Council of the Aeronautical Sciences, Stockholm, Sweden, Sep. 4-9 · 2022

  13. International Conference · Oral

    Design of an Efficient Climbing Flight Trajectory for a Flapping-Wing Micro Air Vehicle

    Lee, S.-G., Yang, H.-H., Han, Y.-J., Han, J.-H.

    33rd Congress of the International Council of the Aeronautical Sciences, Stockholm, Sweden, Sep. 4-9 · 2022

  14. International Conference · Oral

    Optimal Design and Analysis of Twist-Coupled Flapping Mechanism

    Han, Y.-J., Yang, H.-H., Lee, S.-G., Han, J.-H.

    The 2022 Asia-Pacific International Symposium On Aerospace Technology, Niigata, Japan, Oct. 12-14 · 2022

  15. International Conference · Oral

    Design of Revolute Joint with Bi-Stability Using Permanent Magnets

    Yang, H.-H., Han, J.-H.

    ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Virtual, Online, Sep. 15 · 2020

  16. International Conference · Oral

    Aeroelastic Analysis of Two-Dimensional Tandem Wing Using Vortex Lattice Method

    Yang, H.-H., Dhital, K., Han, J.-H.

    Proceedings of 2020 International Congress on Noise Control, Virtual, Online, Aug. 23-26 · 2020

Domestic Conference

  1. Domestic Conference · Oral

    Hardware Development of Bird-Inspired Ornithopters: The KRo Platform

    Yang, H.-H., Lee, S.-G., Lee, E.-H., Ko, H.-S., Han, J.-H.

    The Society for Aerospace System Engineering 2026 Spring Conference, Haeundae, Busan, Republic of Korea, May 6-9 · 2026

    Best Presentation Paper Award

  2. Domestic Conference · Oral

    Design and Flight Performance Demonstration of an Ornithopter Using Neural Network Surrogate Model-Based Optimization

    Ko, H.-S., Yang, H.-H., Lee, S.-G., Lee, E.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2026 Spring Conference, Seogwipo, Jeju-do, Republic of Korea, Mar. 31 - Apr. 3 · 2026

  3. Domestic Conference · Oral

    Effect of Wing Structure and Kinematics on Flapping Aerodynamics of Bird-Inspired Ornithopter with Spanwise Folding

    Yang, H.-H., Ko, H.-S., Lee, E.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2025 Fall Conference, Goseong, Gangwon-do, Republic of Korea, Nov. 11-14 · 2025

  4. Domestic Conference · Oral

    Modeling and Simulation for Performance Analysis of a Zone Plate Optical System for Space Telescopes

    Seong, Y.-W., Yang, H.-H., Kim, H.-J., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2025 Fall Conference, Goseong, Gangwon-do, Republic of Korea, Nov. 11-14 · 2025

  5. Domestic Conference · Oral

    Multidisciplinary Design Optimization Using Artificial Neural Network Surrogate Model

    Ko, H.-S., Yang, H.-H., Lim, J.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2025 Space Conference, Yeosu, Jeollanam-do, Republic of Korea, Jun. 25-27 · 2025

  6. Domestic Conference · Oral

    Study on the Characteristics of a Woven Structure-Based Impact Mitigation Device

    Jung, E.-H., Jang, K.-I., Yang, H.-H., Jung, S., Kim, D. G., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2025 Space Conference, Yeosu, Jeollanam-do, Republic of Korea, Jun. 25-27 · 2025

  7. Domestic Conference · Oral

    Surrogate Model-Based Design Optimization of Flapping-Wing Air Vehicle

    Ko, H.-S., Yang, H.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2024 Fall Conference, Jeongseon, Gangwon-do, Republic of Korea, Nov. 13-15, pp. 681-682 · 2024

  8. Domestic Conference · Oral

    Simulation of Attitude Maneuver after Docking with On-Orbit Servicing Satellite and Target Satellite

    Jang, K.-I., Yang, H.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2024 Space Conference, Changwon, Gyeongsangnam-do, Republic of Korea, Jun. 26-28, p. 49 · 2024

  9. Domestic Conference · Oral

    Design of a Bi-Stable Gripper Mechanism for Active Debris Removal Mission

    Jung, S., Yang, H.-H., Jang, K.-I., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2024 Space Conference, Changwon, Gyeongsangnam-do, Republic of Korea, Jun. 26-28, p. 47 · 2024

  10. Domestic Conference · Oral

    Flight Dynamic Simulation of Bird-Inspired Ornithopter in Forward Flight

    Yang, H.-H., Lee, S.-G., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2024 Spring Conference, Jeju, Jeju-do, Republic of Korea, Apr. 3-5, pp. 249-250 · 2024

    Best Paper Presentation Award

  11. Domestic Conference · Oral

    Modeling and Simulation of Unsteady Aerodynamics in Forward Flapping-Flight Using Modified Unsteady Vortex Lattice Method

    Yang, H.-H., Lee, S.-G., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2024 Spring Conference, Jeju, Jeju-do, Republic of Korea, Apr. 3-5, pp. 247-248 · 2024

  12. Domestic Conference · Oral

    Development of Passive-Morphing Compliant Joint Structure for Bird-Inspired Ornithopter

    Chu, Y.-E., Yang, H.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2024 Spring Conference, Jeju, Jeju-do, Republic of Korea, Apr. 3-5, pp. 267-268 · 2024

  13. Domestic Conference · Oral

    Development of a Bird-Inspired Flapping-Wing Air Vehicle with Folding-Wing Mechanism

    Lee, E.-H., Yang, H.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2024 Spring Conference, Jeju, Jeju-do, Republic of Korea, Apr. 3-5, pp. 261-262 · 2024

  14. Domestic Conference · Oral

    6-DOF Docking Simulation of On-Orbit Servicing Satellite with Robotic Arms

    Yang, H.-H., Jang, K.-I., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2023 Space Conference, Yeosu, Jeollanam-do, Republic of Korea, Jun. 28-30, p. 16 · 2023

  15. Domestic Conference · Oral

    Effect of Maneuver Time Based on Attitude of Combined Assembly with OOS Satellite and Target Satellite

    Jang, K.-I., Yang, H.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2023 Space Conference, Yeosu, Jeollanam-do, Republic of Korea, Jun. 28-30, p. 15 · 2023

  16. Domestic Conference · Oral

    Fabrication and Flight Dynamics Simulation of Servo-Driven Bird-Inspired Flapping Wing Air Vehicle

    Lee, E.-H., Yang, H.-H., Han, Y.-J., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2022 Fall Conference, Jeju, Jeju-do, Republic of Korea, Nov. 16-18, pp. 46-47 · 2022

  17. Domestic Conference · Oral

    Multi-Body Dynamics Framework for Flight Characteristics Analysis of Air Vehicle

    Han, J.-H., Yang, H.-H., Lee, S.-G.

    The Korean Society for Noise and Vibration Engineering 2022 Fall Conference, Jeju, Jeju-do, Republic of Korea, Nov. 2-5 · 2022

  18. Domestic Conference · Oral

    Experimental Investigation of Aspect Ratio Effect in Flapping-Wing Aerodynamics

    Addo-Akoto, R., Yang, H.-H., Lee, S.-G., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2022 Spring Conference, Goseong, Gangwon-do, Republic of Korea, Apr. 20-22, pp. 59-60 · 2022

  19. Domestic Conference · Oral

    Unsteady Aerodynamics Measurement Test for Validation of Aerodynamic Model of Flapping Wing Air Vehicle

    Han, Y.-J., Yang, H.-H., Lee, E.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2021 Fall Conference, Jeju, Jeju-do, Republic of Korea, Nov. 17-19, pp. 29-30 · 2021

  20. Domestic Conference · Oral

    Wing Kinematics Search of Rectangular Flapping-Wing Model for Maximum Lift and Lift/Drag Ratio

    Yang, H.-H., Lee, S.-G., Muhammad, Y. B., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2021 Spring Conference, Samcheok, Gangwon-do, Republic of Korea, Jul. 7-9, pp. 524-525 · 2021

  21. Domestic Conference · Oral

    Multibody Dynamics Simulation Based Optimal Flight Control of Bioinspired FWMAV

    Muhammad, Y. B., Lee, S.-G., Yang, H.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2021 Spring Conference, Samcheok, Gangwon-do, Republic of Korea, Jul. 7-9, pp. 177-178 · 2021

  22. Domestic Conference · Oral

    Trajectory Optimization of Flapping Wing Micro Air Vehicle in Longitudinal Plane

    Lee, S.-G., Yang, H.-H., Muhammad, Y. B., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2021 Spring Conference, Samcheok, Gangwon-do, Republic of Korea, Jul. 7-9, pp. 173-174 · 2021

  23. Domestic Conference · Oral

    Design of Bi-Stable Revolute Joint Using Permanent Magnets

    Yang, H.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2020 Spring Conference, Goseong, Gangwon-do, Republic of Korea, Jul. 8-10, pp. 117-118 · 2020

  24. Domestic Conference · Oral

    Modified Unsteady Discrete Vortex Method to Simulate the Unsteady Aerodynamics of Two-Dimensional Flapping Motion in Hovering Flight

    Yang, H.-H., Lee, S.-G., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2020 Fall Conference, Jeju, Jeju-do, Republic of Korea, Nov. 18-20, pp. 572-573 · 2020

  25. Domestic Conference · Oral

    Simulation and Control of FWMAV in Transition Flight

    Lee, S.-G., Yang, H.-H., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2020 Fall Conference, Jeju, Jeju-do, Republic of Korea, Nov. 18-20, pp. 650-651 · 2020

  26. Domestic Conference · Oral

    Conceptual Design of Bi-Stable Mechanism Using Permanent Magnets

    Yang, H.-H., Choi, A. J., Han, J.-H.

    The Korean Society for Aeronautical and Space Sciences 2019 Fall Conference, Jeju, Jeju-do, Republic of Korea, Nov. 20-23, pp. 157-158 · 2019

Awards

  1. 2026

    Best Student Paper Award

    LLM-Assisted Conversational Design of Dual-Arm Space Robot via Retrieval-Augmented Simulation Knowledge

    IAA SpaceAI 2026, the 3rd IAA Conference on AI for Space

    Yang, H.-H., Jang, K.-I., Jung, E.-H., and Han, J.-H.

    Publication Details

  2. 2026

    Best Presentation Paper Award

    Hardware Development of Bird-Inspired Ornithopters: The KRo Platform

    The Society for Aerospace System Engineering

    Yang, H.-H., Lee, S.-G., Lee, E.-H., Ko, H.-S., and Han, J.-H.

    Publication Details

  3. 2024

    Best Paper Presentation Award

    Flight Dynamic Simulation of Bird-Inspired Ornithopter in Forward Flight

    The Korean Society for Aeronautical and Space Sciences

    Yang, H.-H., Lee, S.-G., and Han, J.-H.

    Publication Details

  4. 2024

    Gold Award, RecurDyn Simulation Competition

    FunctionBay

    Yang, H.-H. and Ko, H.-S.

    Read Article

  5. 2023

    Gold Award, RecurDyn Simulation Competition

    FunctionBay

    Yang, H.-H. and Jang, K.-I.

    Read Article