Dr. Jeongmoo Huh Gives Presentation Over Micro Propulsion Systems for the Next Generation Space Missions

On Friday, February 14th, Dr. Jeongmoo Huh gave a presentation over, “Micro Propulsion Systems for the Next Generation Space Missions.” Dr. Huh currently works in the Space Engineering Department in the Faculty of Aerospace Engineering at Delft University of Technology as a visiting researcher.

Abstract: Many miniaturized satellites have recently been launched and proved the feasibility of distributed space systems in space missions with improved revisit time, the time elapsed between observations by satellites, at an extremely low cost. Most preliminary small-scale satellites such as CubeSat and PocketQube, however, were either not equipped with a micro-propulsion system for its altitude/orbit control or not ready for various space missions due to inherent theoretical performance limitations of space propulsion systems that currently exist as well as limited performance achievement of micro propulsion systems. Not only normal operation of miniaturized satellites but also the next generation space mission using CubeSat/PocketQube will not be feasible without successful downsizing of space propulsion systems and their performance improvement.

The seminar will start with general principles of several chemical rockets and difficulties of downsizing of chemical rockets, and report how a chemical rocket was successfully miniaturized including a photolithography process, a MEMS (Micro-electro-mechanical Systems) based fabrication technology, and catalyst manufacturing process as well. Performance of thruster generation and propellant decomposition efficiency of 50 mN class MEMS-based monopropellant micro thrusters will be discussed based on experimental data showing how much performance was improved by using a blended propellant and regenerative micro cooling channels in micro scale thruster systems.

This will be followed by an introduction to electrospray micro colloid propulsion, one of space electric propulsion systems, which has arguably the highest specific impulse performance, up to a range of 1,500-7,000 s depending on electric power supplied. The different nature of the working principle of the system and its performance characteristics compared with chemical one will be identified. Pros and cons of chemical and electric propulsion systems will be discussed with inherent performance limitation of both propulsion systems, and a new system configuration for space micro propulsion will be suggested to meet the performance requirement of miniaturized propulsion systems for the next generation space missions, an interplanetary mission of miniaturized satellites.

Biography: Dr. Jeongmoo Huh currently works in Space Engineering Department in the Faculty of Aerospace Engineering at Delft University of Technology (TU Delft) in the Netherlands as a visiting researcher starting from July 2019. In Delft, He’s working on high energetic gel phase novel propellant development for space propulsion applications. Before joining the group, he worked as a postdoctoral researcher at Queen Mary, University of London (QMUL), in the UK from April 2017 to June 2019 participating in an electric propulsion project funded by the EU. The project was about high-performance low-cost disruptive propulsion technology using electrospray colloid propulsion for small-scale satellite applications. There was a consortium for the project and it was composed of a university, QMUL, and three different space-related companies, AirBus in the UK, NanoSpace in Sweden, and SystematIC in the Netherlands. The successful outcome is now on its way to commercialization. Dr. Huh stayed in Daejeon, South Korea for about 5 years from Feb 2012, for his graduate course and one year of postdoc experience. He received an M.S./Ph.D. degree in the Department of Aerospace Engineering from Korea Advanced Institute of Science and Technology (KAIST) in Daejeon in Feb 2016. For his Bachelor’s degree, he studied in the Department of Aerospace and Mechanical Engineering at Korea Aerospace University, Goyang, South Korea, from March 2008 to Feb 2012. His research topic in graduate school was about micro-scale chemical space propulsion for Nano-satellite applications, for which a MEMS(Micro-Electro-Mechanical Systems) fabrication process was designed and employed, validating successful manufacturing and operation of 50 mN class monopropellant thrusters with the suggested development procedure. As a postdoctoral researcher at KAIST, he also experienced classical size monopropellant, bipropellant, and hybrid propellant rockets and had hands-on experience on its application to sounding rockets, sounding rocket flight testing, and numerical code development for propulsion performance and flight performance estimation. One of his journal papers related to the micro chemical propulsion was selected as the best paper in Journal of Micromechanics and Microengineering at 2013 and 2014, and several conference papers related to micro propulsion, sounding rockets, and micro reactors were the best paper awarded and selected for further manuscript work at several international conferences held in the UK, France, Korea, and the US. Overall, chemical and electric space propulsion, sounding rocket systems, MEMS-based combustion and propulsion, and new energetic materials and novel propellants are what he has experienced and where his expertise lies in.


Dr. Imraan Faruque Presents Seminar over Current Research

Imraan Faruque, Ph.D., gave a presentation on Monday, March 25, 2019 on how biologically-driven flight control strategies can inform unmanned aerial vehicle swarms. Dr. Faruque is an assistant professor for the Department of Mechanical and Aerospace Engineering at OSU.

Abstract: This seminar introduces a framework for deriving feedback design principles that can enable insect-based flight control approaches on unmanned aerial systems (UAS) and engineered extensions to groups of UAS. The seminar begins by establishing flight dynamics models of dipteran flapping wing insects, combining automated high-speed videography measurements of freely flying insects, experimental aerodynamics results, rigid body dynamics, and system identification techniques to distill high fidelity flight dynamics models into computationally-tractable models applicable to flight control analysis.  Methods to extract models of the closed loop controllers implemented on insects from free flight trajectories are discussed.  Linear matrix inequalities are applied to interpret the controllers into design principles that can translate the extracted controllers into those appropriate for engineered vehicles, and improvements in experimental techniques to quantify multi-agent aerial insect behaviors.  Control-theoretic definitions of reachability are applied to the aerodynamic mechanisms involved in insect-scale flight control and gust response, leading to a theoretic framework for the gust response properties of closed-loop flight control and the engineered design of gust-aware flight controllers.

Biography: Imraan Faruque’s research interests include reduced-order models of complex systems, biologically inspired locomotion and control systems, unmanned aerial systems, and flight dynamics and control.  Dr. Faruque’s specialization is in dynamic models of flying insect feedback, and in reduced order flight dynamics models that can concisely capture the dynamic properties of insect flight control, where his work has led to over 40 publications, including numerous best paper awards and patents. Dr. Faruque is currently an Assistant Professor at Oklahoma State University’s Department of Mechanical and Aerospace Engineering, with an appointment as Assistant Research Professor in the University of Maryland’s Department of Aerospace Engineering.  He is an honors alumnus of Virginia Tech, and received his MS (2010) and Ph.D. in Aerospace Engineering in 2011 from the University of Maryland. He previously held research positions at the Army Research Lab, the Air Force Research Lab, and at General Electric Aircraft Engines.

Dr. Zuo Presents Seminar at OU

Dr. Jian Zuo gave a seminar over drug discovery for hearing loss on Thursday, March 14th at OU. Dr. Zuo is a chairman and professor from the Department of Biomedical Sciences at Creighton University School of Medicine.

Abstract: Hearing loss caused by aging, noise, cisplatin toxicity, or other insults affects 360 million people worldwide, but there are no Food and Drug Administration–approved drugs to prevent or treat it. We first performed high-throughput screens for small molecules that prevent cisplatin-induced hearing loss in a cochlear derived cell line. The hit compounds were further validated in cochlear explants, zebrafish lateral-line neuromasts in vivo, and eventually in mouse and rat’s cochleae in vivo. We have so far identified and characterized several potent compounds that exhibit protection against not only cisplatin but also antibiotics and noise-induced hearing loss. We further investigated several targets of top compounds in knockout mouse models. To treat hearing loss, we first developed genetic mouse models in which hair cell regeneration occurred at adult ages. Based on the genetic manipulations, we performed high-throughput screens of small molecules that mimic the genetics models. We further tested these top compounds in adult mice for hair cell regeneration. Combinatory applications of these top compounds could provide therapeutic intervention of hearing loss in clinics.

Biography: Jian Zuo obtained his B.S. in Biomedical Engineering at Huazhong University of Science and Technology in Wuhan, China in 1985. He then immigrated to the US for his Ph.D. in Physiology from UCSF in 1993. After postdoc training in Rockefeller University, he became a faculty at St. Jude Children’s Research Hospital in Memphis since 1998. After 20 years, he recently moved to Creighton University School of Medicine as the Chairman and Professor in the Dept. of Biomedical Sciences in April 2018. He has published >100 research articles and >20 reviews with high impacts. He currently has 2 R01 grants, 2 DoD grants, and one MRC grant. He has trained many successful students and postdocs and has interests in the commercialization of his discoveries.

AME Hosts Seminar by Dr. Srinivas Kolla

Srinivas Swaroop Kolla, Ph.D., a research associate at the University of Tulsa, presented a seminar Friday, March 8th at OU. He spoke about the design and performance of gas-liquid cylindrical cyclone compact separators.

Abstract: Compact separation technology has continuously improved significantly in recent years, due to its applications in a variety of industries, such as Oil & Gas, Chemical, Environmental, and Aerospace. The conventional separators that are based on gravity, are bulky, heavy and expensive, which are being replaced by compact separators that have smaller foot-print, higher productivity and are less expensive to procure and operate. Gas-Liquid Cylindrical Cyclone (GLCC©) separator is one such compact separator that is simple and easy to install and operate with more than 6800 applications including subsea. The presentation covers various aspects of design modifications of GLCC separators and quantifying its performance under the limiting conditions using control strategies. Details of experimental research conducted to investigate the two undesirable phenomena, namely, Liquid Carry-Over and Gas Carry-Under are presented. The Structural integrity analysis of the GLCC inlet section is conducted using the FEA and the design modifications are validated using CFD simulations. A comparative study of the FEA analysis results and Fluid-Structure Interaction analysis results is presented. In addition, different mechanistic models developed to quantify the LCO and GCU of the GLCC are discussed. Finally, short-term and long-term research goals are presented along with guiding principles of teaching philosophy.

Biography: Dr. Srinivas Swaroop Kolla received his B.S degree (2002) from Nagarjuna University in India and M.S. (2007) and Ph.D. (2018) degrees from The University of Tulsa, Oklahoma, all in Mechanical Engineering. Dr. Kolla has 9 years of experience pursuing a professional career working in cross-functional teams across Europe and India on industry projects including Oil & Gas, Medical and Automotive sectors. Between 2007 and 2015, he worked in various roles starting as a Research Engineer to Project Manager leading teams developing components and systems. During his career with FMC Technologies in France, he worked on the project “PRELUDE” an FLNG/FPSO unit being developed currently by Samsung Industries. Dr. Kolla has a multi-disciplinary background in mechanical and petroleum engineering and his research focus on Multiphase Flow, Separation Technologies, Pressure vessels, Flow Assurance, Pumps and Design of components & Systems using Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) as well as Fluid-Structure Interaction (FSI). He has published several refereed journal and conference papers, while some are under review.  He has also applied for 2 US patents and few more are being prepared for submission this year. He serves on executive committee of ASME Mid-Continent Section and Co-organizer of Multiphase Flow Technical Track in ASME Fluid Engineering Division Summer Conference and a member of FMTC, CFDTC, MFTC technical committees.  He also serves as a reviewer for several conferences and journals. Dr. Kolla has received several awards, scholarships, and fellowships during his career. His awards over the past 3 years include ASME Petroleum Division Scholarship, ASME Fluid Engineering Division-Graduate Scholarship, The University of Tulsa Distinguished Chapman Scholarship, Graduate Student Fellowship and Bellwether Fellowship.

Dr. Edward Guo Presents Seminar over Bone Bioengineering

Edward Guo, Ph.D., a Chair and Stanley Dicker Professor for the department of Biomedical Engineering at Columbia University, gave a seminar on Wednesday, March 6th at OU. His seminar was over bone bioengineering: microstructure, mechanics, mechanobiology and beyond.

Abstract: Bone Bioengineering Laboratory is developing innovative technology in microstructural assessments, biomechanical modeling, multiscale and mechanobiological approaches in skeletal research. Bone Bioengineering has both basic science and clinical significances in many medical fields, such as osteoporosis, osteoarthritis, or intervertebral disc degenerations. I will highlight our development of a three-dimensional imaging analysis and modeling technique for trabecular bone microstructure, its applications in basic science research of bone mechanics, and clinical applications in osteoporosis and osteoarthritis. We will discuss bone microstructural phenotypes in difference races and their implications in genetic and precision medicine, anthropology, evolution and mechanobiology of the skeletons. In parallel to these developments, we will also discuss our multiscale mechanobiological approaches in understanding the mechanisms of how bone senses and responds to mechanical loading and showcase how mechanobiology links to bone microstructure and mechanics.

Biography: Dr. Guo received his M.S. in 1990 and Ph.D. in 1994 in Medical Engineering and Medical Physics from Harvard University-MIT. In 1994-1996, Professor Guo did his postdoctoral fellowship in the Orthopaedic Research Laboratories at the University of Michigan at Ann Arbor with Professor Steven A. Goldstein in orthopaedic bioengineering. In 1996 he joined the Department of Mechanical Engineering and then Department of Biomedical Engineering at Columbia University as an Assistant Professor. He was promoted to Associate Professor in 2001, Associate Professor with tenure in 2003, Professor in 2007, and named as Stanley Dicker Professor in 2018. He directs the Bone Bioengineering Laboratory in the Department of Biomedical Engineering at Columbia focusing his research interests in micromechanics of bone tissue, computational biomechanics, and mechanobiology of bone. His past honors include Young Investigator Recognition Award from the Orthopaedic Research Society, National Research Service Award from the US National Institutes of Health (NIH), a CAREER award from the US National Foundation of Science (NSF), Funds for Talented Professionals (Joint Research Fund for Overseas Chinese Young Scholars) from the National Natural Science Foundation of China. He is elected fellow of American Institute for Medical and Biological Engineering, American Society of Mechanical Engineers, and International Academy of Medical and Biological Engineerin. He was one of the founders and served as co-Editor-in-Chief of Cellular and Molecular Bioengineering (CMBE), an international journal of US Biomedical Engineering Society (BMES). He has served many review panels for NIH, NSF, and NASA. His research has been supported by the Whitaker Foundation, the NSF, and the NIH. He served as President of International Chinese Musculoskeletal Research Society, the Society for Physical Regulation in Biology and Medicine, Member of Board of Directors of Orthopaedic Research Society, and Member of Board of Directors of AIMBE. He also founded the Special Interest Group (SIG) in CMBE in the BMES and served as its founding Chair.

Dr. Kazempoor Presents Seminar over Driving Sustainable Performance in the Oil and Gas Industry

Pejman Kazempoor, Ph.D., gave a seminar on Thursday, February 21, about driving sustainable performance in the oil and gas industry. Dr. Kazempoor is a senior engineer and project manager at Baker-Hughes, a GE company.

Abstract: The world energy consumption is projected to grow by 28% between 2015 and 2040, with fossil fuels accounting for more than three-quarters of the world energy mix during this period. As oil & gas (O&G) will remain essential to global economic development for decades to come, global concerns about climate change and pollution are leading to a focus on the amount of energy it takes to produce hydrocarbon fuels. Energy efficiency and emissions reduction, which are intrinsically connected, have been identified as important challenges to the O&G industry and positive drivers that can improve productivity, lower operating costs, and reduce environmental impacts. This presentation is designed to provide a deeper understanding of sustainable energy in the O&G sector and to offer a comprehensive explanation of the opportunities available to achieve it. The main emphasis will be on natural gas and its associated production, processing, and transportation technologies. Specifically, emissions reduction and mitigation technologies, waste energy, and fuel utilization techniques, and natural gas process optimization will be discussed in more detail. The author’s previous and current fundamental research projects and industrial work experience in the same field will be presented. The seminar will conclude by highlighting future research directions and potential projects.

Biography: Pejman Kazempoor is a senior engineer and project manager at Baker-Hughes, a GE company (formerly known as GE Global Research -Oil and Gas Technology Center). He is responsible for driving innovative research and development activities and taking new technologies from the conceptual stage to full commercialization. His current and previous projects at BHGE focus on four specific areas: emission reduction techniques and technologies, sustainability, and energy efficiency, natural gas monetization, and renewable energy application in the Oil & Gas Industry.  Pejman graduated with his Ph.D. in Mechanical Engineering in Dec. 2009 from Tarbiat Modares University (TMU), Tehran in partnership with EMPA, Switzerland (ETH-Zurich Domain), where he investigated building integrated co- and poly-generation systems in the framework of the multi-national Polysmart project. He received the Presidential Award, two best conference paper awards, and the TMU outstanding Ph.D. student award for his Ph.D. work and accomplishments. Pejman is the recipient of BHGE’s 2018 Technology Excellence Award, a referee for 15 high-prestige journals in the field of thermal and fluid sciences, and Associate Editor for Journal of Natural Gas Science and Engineering-Elsevier. He also published more than 50 papers in various national and international peer-reviewed journals and conferences, including a book chapter. Pejman innovative experience is also highlighted by three issued patents, as well as four pending patents.