Keynote Speaker Ⅰ

Prof. Hai Huang

Beihang University, China

Biography: Dr. Hai Huang, Professor, School of Astronautics, Beihang University. The editorial board members of Chinese Journal of Aeronautics and Structural and Multidisciplinary Optimization. He got his bachelor, master and Ph.D degrees in 1983, 1986 and 1990 respectively, all from Beihang University, Beijing, China. He ever worked as a post-doctoral fellow on composite joint strength and design in Wichita State University, USA, from June, 1999 to October, 2000. His research areas are concept design of spacecraft, structural optimization, structural control as well as their applications. One of His achievements “The theories and algorithm of complex structures” was awarded the first grade Natural Science Prize of China Universities. During the past 15 years he led his team to endeavor in applying the proposed structural optimization theories and the developed software to aerospace engineering, which is great helpful to reduce the spacecraft structural mass. In the area of structural/mechanical vibration control, he developed several kinds of vibration isolation and simulation devices that are used in ground vilifications and tests aiming to space applications. Recent years he, as a team leader and chef designer, works on a student small satellite program (APSCO-SSS) that well combines theoretical study with engineering practice. The work is supported by APSCO (Asian-Pacifica Space Cooperation Organization) and was written in the government white paper 《China Space activities 2016》. The satellite has successfully launched in orbit in Oct. 2021, and a series of space flight tests are still being conducted and near to complete. The results show quite good and exciting.

Speech Title: Micro-satellite SSS-1 & Its Tests in Orbit

Abstract: The Student Small Satellite (SSS) Project was sponsored by Asian-Pacific Space Cooperation Organization (APSCO). It was proposed to develop a small satellite constellation containing 1 micro-sat (SSS-1) and 2 cube-sats (SSS-2A/B). The project planned several in orbit tests to verify some new technologies, meanwhile, as an education program, it would also train the university students and faculties of APSCO member states on satellite engineering knowledge through hands-on practice. As an important international cooperation project, China National Space Administration (CNSA) provided the free piggyback launch for the satellites and the project was written in the government white paper 《China Space activities 2016》.

The micro-satellite SSS-1 and cube-sat SSS-2A were launched into orbit from Taiyuan Satellite Launch Center (TSLC) on October 14, 2021 with a Long March-2D (LM-2D) rocket. This presentation will introduce the SSS project background at first, then mainly focused on SSS-1, the space missions of the micro-satellite and corresponding payloads are described, and platform design including structure subsystem, thermal control subsystem (TCS), attitude determination and control subsystem (ADCS), on-board data handling subsystem (OBDH), electrical power supply subsystem (EPS), and telemetry, tracking and command subsystem (TT&C) are briefly introduced. After that, the new or special technologies used in micro-satellite SSS-1 are presented, and as a student satellite education activity, some typical test procedures in development are showed, In view of the micro-satellite SSS-1 has been in orbit for 2 years, this presentation also will show some important satellite space operations and test situations with the in-orbit data, such as the telemetry of platform health, remote sensing images and photos recording the deployment process of the new mechanism--coilable mast, etc.. With these in-orbit achievements, the success of the satellite design and development are completely verified.

Keynote Speaker Ⅱ

Prof. Jinxiong Zhou

Xi’an Jiaotong University, China

Speech Title: Flow-induced vibration in steam generators and heat exchangers: Models and recent developments

Abstract: Steam generators and heat exchangers are key components for power plants and engines. These devices have a loosely-supported tube bundle structure subjected mainly to external cross-flow. They are susceptible to flow-induced vibration and fretting. Understanding the mechanism of flow-induced vibration is crucial for the design and maintenance of these tube structures. Though it has more 50 years of history, flow-induced vibration remains a challenging problem due to its complexity. Tremendous efforts have been devoted to development various models to analyze flow-induced vibration in steam generators. Previous efforts are mainly limited to frequency domain analysis. This talk mainly discusses our recent work on developing time-domain models and its numerical implementation. Topics like fluidelastic models, nonlinear dynamics of tube bundles, and fretting-wear simulations are covered and some possible directions are highlighted.

Biography: Dr. Zhou is a Professor at School of Aerospace in Xi’an Jiaotong University (XJTU). His research interests include Dynamics of aircraft structures, fluid-structure interaction, flow-induced vibration, mechanics of space depolyable structures. He has published over 170 peer-reviewed journal papers with total citations 8000(Google scholar).

Invited Speaker Ⅰ

Dr. Galih Bangga

Senior Engineer

University of Stuttgart, Germany

Speech Title: Utilizing high fidelity CFD data into engineering model calculations of rotor aerodynamics

Abstract: Propeller, helicopter and wind turbine rotors often have lower performance and experience higher loading in real operation compared to the original design performance. One of the reasons stems from the influences of complex flow turbulence, blade contamination, surface imperfection, airfoil-shape changes and variations of the twist distributions. Engineering models used for designing rotor blade are limited to information derived from blade sectional datasets, while details on the three-dimensional blade characteristics are not captured. In the present talk, a dedicated strategy to improve the prediction accuracy of engineering model calculations will be presented. The main aim is to present an elaborated effort for designing better rotors and for providing a better estimate on the loads in realistic operating conditions. The proposed approach is done by carefully utilizing data from high fidelity Computational Fluid Dynamics (CFD) computations into Blade Element Momentum (BEM) and lifting line methods. It will be demonstrated that the prediction accuracy can be improved by following the recommended guidelines.

Biography: GALIH BANGGA is a senior engineer at DNV Services UK, United Kingdom. He obtained the PhD degree of wind turbine aerodynamics from University of Stuttgart, Germany, in 2017. Then he did the postdoc job at the same university till September 2021. Since October 2021 he has served as a senior engineer at the company of DNV Services UK. Meanwhile, he has also been a visiting scientist and lecturer at University of Stuttgart.

CMAAE Previous Speakers

         Prof. Ramesh K. Agarwal                         Prof. Joaquim R. R. A. Martins                            Dr. Phillip M. Ligrani

Washington University in St. Louis, USA            University of Michigan                       University of Alabama in Huntsville                                                                                                                          美国圣路易斯华盛顿大学                                      密歇根大学                                          阿拉巴马大学亨茨维尔分校