Jae‐Hung Han
Korea Advanced Institute of Science and Technology · 工学
研究室紹介
Professor Jae-Hung Han's research lab specializes in bio-inspired aerospace systems, with a primary focus on flapping-wing micro air vehicles (FWAVs) and smart composite structures. The lab integrates principles from animal flight—particularly birds and insects—into the design of agile, efficient, and maneuverable aerial vehicles. Key research directions include the development of smart materials (e.g., macro-fiber composites) for active wing control, advanced vibration suppression in lightweight structures using piezoelectric sensors and actuators, and the creation of quasi-steady aerodynamic models for flapping flight at low Reynolds numbers. The lab combines analytical modeling, numerical simulation, and experimental validation to advance both fundamental understanding and engineering applications in bio-mimetic flight and structural dynamics.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
15In this paper, the placement of piezoelectric sensors and actuators has been studied. Genetic algorithms have been used to find efficient locations of piezoelectric sensors and actuators of a smart composite place. Locations of both sensors and actuators have been determined with consideration of controllability, observability and spillover prevention. The composite specimen with piezoelectric sensors and actuators has been prepared according to the optimization result. The experimental vibratio
In order to reduce the vibrational level of lightweight composite structures, active vibration control methods have been applied both numerically and experimentally. Using the classical laminated beam theory and Ritz method, an analytical model of the laminated composite beam with piezoelectric sensors and actuators has been developed. Smart composite beams and plates with surface-bonded piezoelectric sensors and actuators were manufactured and tested. It is found that the developed analytical m
This study describes the development of a bio-mimetic flapping wing and the aerodynamic characteristics of a flexible flapping wing. First, the flapping wing is designed to produce flapping, twisting, and camber motions by using a bio-mimetic design approach. A structural model for a macro-fiber composite (MFC) actuator is established, and structural analysis of a smart flapping wing with the actuator is performed to determine the wing configuration for maximum camber motion. The analysis model
A quasi-steady aerodynamic model in consideration of the center of pressure (C.P.) was developed for insect flight. A dynamically scaled-up robotic hawkmoth wing was used to obtain the translational lift, drag, moment and rotational force coefficients. The translational force coefficients were curve-fitted with respect to the angles of attack such that two coefficients in the Polhamus leading-edge suction analogy model were obtained. The rotational force coefficient was also compared to that der