Hyoung S. Chung

Korea Air Force Academy, Korea
Office: (82) 43-290-6176
Home : (82) 43-288-2542
Email: hschung@afa.ac.kr

Background

Ph.D. Candidate
Department of Aeronautics and Astronautics, Stanford University, September 1998-2003.

Master's Degree
School of Mechanical& Aerospace Engineering, Seoul National University, March 1992-February 1994.

Bachelor of Science
Department of Aeronautics & Astronautics, Korea Air Force Academy, March 1985-February 1989.

Research Interests

1.  Multidisciplinary Design Optimization (MDO) using Approximation Models

The recent growth of MDO concept to exploit the synergism of mutually interacting phenomena among different disciplines increases the computational burden and complexity of the design process. To solve these problems, an alternative using approximation models to the actual high-fidelity analysis code is getting increased attention as a necessity of MDO process. Currently, the advantages and disadvantages of various approximation models such as Response Surface and Kriging methods are being investigated. Research focuses on improving those methods so that they can be effectively incorporated in MDO process for aircraft design.

What is MDO (Mulitdisciplinary Design Optimization)?

Need for MDO

Need for Approximation Models in MDO: See Section 2.3 of the Paper "Approximation Concepts"

• Response Surface Method: Ref. 1 Ref. 2 Ref. 3 Ref. 4
• Kriging Method : Ref. 1 Ref. 2 Ref. 3
• Examples : See papers below

2. Quiet Supersonic Platform(QSP) Design

What is QSP Program?

QSP Research in Our Lab : Ref. 1   Ref. 2

3. Art Gallery 

A Supersonic Business Jet Configuration : 1 2 3 4 5 6

Publications

2002
			Chung, H.S. and Alonso, J.J., "Design of a Low-Boom Supersonic Business Jet Using Cokriging Approximation Models", 9th AIAA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, AIAA 2002-5598, Altanta, Georgia, September 4-6, 2002.

2002
			Chung, H.S. and Alonso, J.J., "Using Gradients to Construct Cokriging Approximation Models for High-Dimensional Design Optimization Problems", AIAA 40th Aerospace Sciences Meeting and Exhibit, AIAA-2002-0317, Reno, NV, January 14-17, 2002.
2001
			Chung, H.S., and Alonso, J.J., "Using Gradients to Construct Response Surface Models for High-Dimensional Design Optimization Problems", AIAA 39th Aerospace Sciences Meeting and Exhibit,AIAA-2001-0922, Reno, NV, January 8-11, 2001.
2000
			Chung, H.S. and Alonso, J.J., "Comparison of Approximation Models with Merit Functions for Design Optimization", AIAA/USAF/NASA/ISSMO 8th Symposium on Multidisciplinary Analysis and Optimization, AIAA-2000-4754, Long Beach, CA, September 2000.