세미나 및 이벤트

Active Twist Rotor, Theoretical and Experimental Accomplishments and New Developments

세미나 날짜 2006-06-13
작성자
박성훈
작성일
2006-06-01
조회
1642
1. 제 목 : Active Twist Rotor, Theoretical and Experimental Accomplishments and New Developments

2. 연 사 : Prof. Carlos E. S. Cesnik (미국 미시간 대학교 항공우주공학과 부교수)

3. 일 시 : 2006년 6월 13일 (화) 오후 4시~5시 15분

4. 장 소 : 301동 117호 세미나실

5. 내 용 :
In the last 8-9 years, activities on the NASA/Army/MIT Active Twist Rotor program provided theoretical and experimental contributions toward an integrally twist rotor system. Although the primary focus has been on vibration reduction, preliminary acoustic noise reduction and performance improvements have also been investigated. The design freedom of embedded anisotropic actuators brings new challenges from both theoretical and experimental viewpoints. The theoretical accomplishments encompass issues associated with composite blade modeling in the presence of anisotropic piezocomposite actuators, active aeroelastic analysis/design framework for active twist rotors, and the simulation environment for closed-loop control design. Manufacturing and testing of an 1/6th scale active rotor have been accomplished, and first-of-a-kind data were generated to support the concept and the validation of the numerical tools. Closed-loop tests for vibration control at NASA Langley’s Transonic Dynamics Tunnel were conducted. The lecture will review the main theoretical and experimental accomplishments during these and their impact on the advance of such rotor systems. It will also discuss the new developments under way and the author’s assessment on the required areas for future research.

6. 연사 소개 : Carlos E. S. Cesnik is an Associate Professor of Aerospace Engineering at the University of Michigan. He earned an Engineering Degree in Aeronautics (1987) and Masters in Aeronautical Engineering (1989) degree from the Instituto Tecnológico de Aeronáutica (ITA), Brazil, and M.S. in Aerospace Engineering (1991), and Ph.D. (1994) degrees from the Georgia Institute of Technology. He is an Associate Fellow of the American Institute of Aeronautics and Astronautics, member of the AIAA Structural Dynamics Technical Committee and the AIAA Adaptive Structures Technical Committee, member of the American Helicopter Society, and member of the American Academy of Mechanics. Previously he was the Boeing Assistant and then Associate Professor of Aeronautics and Astronautics at MIT. He has also worked as a research engineer at EMBRAER (Brazil) and has experience in aeroelasticity, finite element modeling, and structural/design optimization. His research interests focus on active aeroelastic structures for both fixed and rotary wing vehicles, and structural health monitoring. He has a patent for a wing-morphing concept for cannon-launched UAV, and has been selected to the 2002 ASME-Boeing Structures & Materials Award.

7. 문 의 : 기계항공공학부 신 상 준 교수 (☏ 880-1642)