SUMMARY Ray has over 25+ years of experience at science & engineering, program development, project execution, and identification of business strategic opportunities in aerospace and commercial industries. After 18 years with United Technologies Research Center (UTRC), in 2017 he retired as an Associate Director of R&D in thermo-fluid science, with a focus on delivering innovation, customer requirements, advancing market differentiating technologies, and mentoring young talents leading to technical excellence. Prior to joining UTRC, he spent 8 years at NASA Langley Research Center (LaRC) as a senior scientist. In this role, he made significant advancements to laminar flow control supporting national High Speed Civil Transport (HSCT) program. Ray is regarded as an expert in boundary-layer stability and laminar-to-turbulent transition. In addition to fluid mechanics, he has extensive experience in areas including: laminar nacelle/fan/turbine design, axial compressors, aeromechanics, combustion dynamics, noise & vibration, rotorcraft, flight dynamics, two-phase flow, airfoil bearings, and advanced numerical methods.
PROFESSIONAL EXPERIENCE RELIABLE SOLUTIONS CORPORATION Feburay 2018 to Present Address: 49 Bayberry Rd., Glastonbury, CT 06033, USA Director, Science & Technologies; and Business Contact Person Provide scientific & engineering solutions and services to thermo-fluid-structure problems. Expert in multiphysics modeling, simulation, and analysis for aerospace and commercial industries. UNITED TECHNOLOGIES RESEARCH CENTER (UTRC) March 2000 to Dec. 2017 Associate Director, Research & Engineering, Thermo-Fluid Science (TFS), (2017-Present) Principal Engineer (2012-2016), Staff Engineer (2000-2012) Drive innovation & multiphysics modeling & analysis, and develop creative approaches to solving tough problems. Provide leadership in funding allocation, project planning & execution, and technical guidance across multiple UTC business units including Pratt & Whitney (US & Canada), Sikorsky (now a Lockheed Martin company), Carrier, UTC Aerospace Systems (UTAS), and OTIS. A list of selected signature contributions includes: • Partner with Pratt & Whitney, and UTAS, proposed “Hybrid Laminar Nacelle Flight Demo” to NASA. Selected for contract (~$30M) negotiation in 2017. • Establish requirements for laminar fan in P&W geared turbofan engine for efficiency gain. • Develop a fan flutter & forced response analysis tool based on blade-element-momentum theory, and provide flutter boundary assessment, leading to a reliable fan aeromechanics preliminary design tool. • Develop a comprehensive Airfoil Bearing FSI model to provide an Oil-Free technology for Chillers. • Design individual-blade-control swashplateless helicopter. Prototype shows improved performance. • Optimize elevator shrouds for noise reduction by using Adjoint solver (Fluent). A unique innovation has become standard equipment for OTIS Global Model High-rise (GMH) series products. • Investigate Lattice Boltzmann Method (LBM) for low Mach aerodynamic noise, and demonstrate a substantial CPU-hour reduction against LES. Currently, extending the LBM to aerospace & commercial fan noise. • Develop a 3DPSE method for predicting aft propagating hot-turbulent jet noise; before Tim Colonius. • Develop a unique in-tube two-phase flow pattern prediction method for optimizing “charge” requirement; which incurs a stiff penalty cost from complying with regional regulations. • Identify entropy perturbations as a root cause for F119/F135 afterburner “rumble” (low frequency acoustics). Chaired combustion dynamics sessions at IGTI. 1
• Develop a real-time heat flux & transition prediction model for hypersonic boost-glide vehicles. • Two-time recipient of UTRC Outstanding Achievement Award, and 2016 AIAA best paper award. “Exceptional theoretical & technical breadth and depth”, Exec wrote, ”UTC will continue to harvest your impact through all of us who have been fortunate enough to work closely with you, a truly great scientist.” Furthermore, “broaden his impacts through exemplary mentorship.” COMPUTER SCIENCES CORPORATION (CSC), VA 1999 to 2000 Senior Computer Scientist Provided computational analysis & programming support to the Langley Distributed Active Archive Center (DAAC). Process NASA’s Terra Satellite data (CERES instrument and ERBE scanning) taken from low Earth orbit regarding Earth’s energy budget, clouds, atmospheric chemistry, and aerosols, in order to improve climate prediction models. HIGH TECHNOLOGY CORPORATION (HTC), VA 1992 to 1999 Senior Research Scientist Develop proposals for SBIR funding from NASA and Air Force. Provide leadership in project execution, technical direction, and leveraging external relationships. • As PI designed a high performance Mach 8 quiet wind tunnel for NASA high-speed laminar research. • Developed a fast transition prediction module, and incorporate it into a RANS code for the design of multi-element high-lift airfoil providing reliable takeoff & landing performance for subsonic commercial aircraft. • Developed a Compressible Linearized Navier-Stokes (CLNS) solver aimed at improving high-speed (M>3) aircraft engine air-intake performance against unsteady acoustic pressure perturbations. • The first to identify absolute instability in attachment-line boundary layer flow (AIAA 99-0815). • Apply state-of-art numerical techniques: spectral methods, high-order compact schemes, GMRES, Arnoldi's method (Krylov subspace method), non-reflective boundary treatments, dispersion relation preserving (DRP) schemes, turbulence models, and adjoint method . NASA LANGELY RESEARCH CENTER (LaRC), VA 1992 to 1996 Laminar Flow Control Project Office Senior Scientist (Contractor under HTC) (1) Supported F-16XL Supersonic Laminar Flow flight experiment that was part of the national High Speed Civil Transport (HSCT) program. (2) Developed an innovative large scale 2D-eigenvalue method for modeling swept wing attachment-line stability and for predicting laminar-to-turbulent transition. (3) Conducted studies on the effects of canopy closure shock, engine inlet and boundary-layer diverter shocks on the test data quality. (4) Developed a multi-disciplinary shape optimization algorithm, and designed advanced aero-acoustic probes with improved signal-to-noise ratio. (5) Outreach support Pratt & Whitney/NASA LaRC laminar flow nacelle project. YUH-LOONG MOTOR ENGINEERING CENTER, TAIWAN 1982 to 1984 Assistant Engineer (1) Designed and built a three DoF air bearing to measure full-size vehicle’s yaw, roll, and pitch moment of inertia for drive dynamic & comfort analysis. (2) Conducted structural stress & strain measurements, and fatigue analysis. (3) Built & programmed a multi-channel data acquisition & control system out of APPLE II, reducing lab time by more than 50%. (4) Built custom designed load cells and constructed roof-crash and seat-belt test rigs in comply with FAA safety regulations. (5) Ultrasonic NDE 2
HONORS Recognition by NASA, 2017 in Robust Design for Embedded Engine System “Boundary Layer Ingesting Inlet/Distortion Tolerant Fan Jet Engine” AIAA Best Paper Award, 2016 in Green Engineering “Impact of Ultra-High Bypass/Hybrid Wing Body Integration on Propulsion System Performance and Operability”, 54th AIAA Science and Technology Forum. Excellent CTO & CEO Review, UTC, 2014 “Virtual Shroud for High-Speed Elevator”. In 2017, this innovation has become standard equipment for a series of OTIS Global Product for High-Rise buildings. Outstanding Achievement Award, 2010, the highest technical achievement at UTRC “Large Scale Active Rotor Fabrication and Demonstration” Outstanding Achievement Award, 2004, United Technologies Research Center “Jet Noise Reduction Technology Development for PW6000 Engine” Certification of Appreciation by SAE Aerotech ’94 & ‘95 “Recognizing Ray’s substantial contribution for offering keynote lectures” Hold 4 Patents, with additional 3 pending EDUCATION Ph.D., Arizona State University, Mechanical Engineering, 1992 Thesis: Developed a high-order 3D Naiver-Stokes solver based on Chebyshev/Fourier collocation method for studying crossflow instabilities on swept wings. Advisors: Prof. Helen Reed, and Prof. William Saric M.S., National Taiwan University, Mechanical Engineering, 1986 Thesis: Developed a 3D PPNS (Partially Parabolized Navier-Stoke) solver for studying 3D turbulent flow in a 90-degree bended rectangular duct for vertical takeoff. Advisor: Prof. Zuu-Chang Hong B.S., National Chiao Tung University (Taiwan), Mechanical Engineering, 1980 CONTRACT AWARDS “Hybrid (passive & active controlled) Laminar Nacelle Flight Demo,” NASA, ~$30M, selected for contract negotiation, 2017. Partner with Pratt & Whitney, and United Technologies AerospaceSystem (UTAS). “Material Development for Platforms (Hypersonic Boost & Glide Vehicle),” DARPA, Period of Support: Feb. 2015 – Dec. 2017, $5,000,000. ($5M). “High-Lift Transition Prediction Module,” NASA Langley SBIR Phase I Contract, Principal Investigator: R.-S. Lin, Period of Support: Jan. 1999-June 1999, $70,000. “Corner Flow Instability and Supersonic “Quiet” Nozzle Design,” NASA Langley SBIR Phase II Contract, Principal Investigator: R.-S. Lin, Period of Support: March 1994-Sept. 1997, $598,302. “Transition Control in Corner Flow of a Supersonic Square Nozzle,” NASA Langley SBIR Phase I Contract, Principal Investigator: R.-S. Lin, Period of Support: Jan.1993-June 1993, $67,548.
PUBLICATIONS Holley, B. M., Hardin, L. W., Tillman, G., Lin, R.-S., Joo, J W.,”Skin Friction Measurements of Transition in High Reynolds Number, Adverse Pressure Gradient Flow,” ASME Turbo Expo 2018, GT2018-76708 (Accepted for Journal publication) Jee S K, Joo, J W, Lin, R-S., “Large-Eddy Simulation with Boundary Layer Stability Theory for Transitional Flow Computations,”, AIAA Science & Technology, 2018. Lin, R.-S., Croteau, P., and Gidzak, V., “Aerodynamic and Thermo-Mechanical Analysis Results for Hypersonic Boost-Glide Vehicle for MDP Program,”, National Space & Missile Material (NSMM), June 20-23, 2016, Denver, Co. Palies, P., Logue, M., Boyd, I., Gidzak, V., Lin, R.-S., and Acharya, A., “Advances in Integrated CFD-Ablation Analysis for Hypersonic Platform,” National Space & Missile Material (NSMM), June 20-23, 2016, Denver, Co. Lord, W.K., Hendricks, G.J., Kirby, M.J., Ochs, S.S., Lin, R.-S., and Hardin, L.W., “Impact of Ultra High Bypass/Hybrid Wing Body Integration on Propuolsion System Performance and Operability”. 54th AIAA SciTech, San Diego, 2016. (Named as AIAA Best Paper by the AIAA Green Engineering Program Committee) Lin, R.-S., Sharma, O. P., “An analytical investigation on the impact of wall cooling on the development of boundary layers on the suction sides of typical high pressure turbine airfoil,” GT2014-26041, Proc. Of the ASME Turbo Expo 2014, June 16-20, 2014, Dusseldorf, Germany. Joo, J, Tillman, G., and Lin, R.-S.,”Nacelle External Drag Prediction using computational Fluid Dynamics,” AIAA Paper 2012-3998, 48th AIAA Joint Propulsion Conferece, Atlanta, GA, August, 2012. Lin, R.-S., Bertolotti, F. P., Eckett, C. A., Hineman, T. D., and Jensen, R. J., “A Study of the Application of a Finite Element Model to the Predictions of the Injection-Coupled Response of a LOX Post,” 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conf. & Exhibit, 25-28 July 2010, Nashville, TN, AIAA 2010-6563. Matalanis, C.G., Wake, B. E., Lin, R.-S., Kuczek, A., Lakamraju, V., Yeh, J. & Chaudhry Z., “Development of an Active Trim Tab System for Onboard Rotor Tracking,” AHS International, 66th Annual Forum Proc., Pheonix, AZ, May 11-13, 2010. Mishra, A., Ananthan, S., Baeder, J.D., Wake, B.E., and Lin, R.-S.,”Coupled CFD/CSD Prediction of the effects of leading edge slat on rotor performance,” 65th AHSI, May, 2009. Warmner. G.M., Ogunlade, O., Lin, R.-S., Chaudhry, Z., and Wake, B.E., “Analytical Estimation of Power Harvested from a Rotating Helicopter Blade”. ASME 2008-69161, Boston, MA, USA, 2008. Lin, R.-S., et al., “PSE based analysis of noise from an axisymmetric hot jet,” ASME Paper HT-FED2004-56820, 2004. Malik, M. R. and Lin, R.-S.,”Transition Prection on the Slat of a High-Lift System”. J of Aircraft, Vol. 41, No. 6, Nov-Dec 2004. Lin, R.-S., Iyer, V., and Malik, M. R. “Effect of Throat Heating on Critical Roughness and the Stability of Nozzle Wall Boundary Layer,” AIAA Journal, Vol. 41, No. 4, April 2003, pp 612-622. Lin, R.-S, Hariharn N., and Brogan T., “Analysis of Vortex Valves for Combustor Airflow Control” Submitted to the 1st AIAA Flow Control Conf., St. Louise, MO, Jun, 2002. Sun, F., Lin, R.-S., Haas, M., and Brogan, T. “Air Flow Control by Fluidic Diverter for Low NOx Jet Engine Combustion,” AIAA Paper 2002-2945, 2002. Haas, M., Lin, R.-S., and Brogan T. “Boundary Layer Separation Control,” AIAA Paper 2002-2947, 2002. Lin, R.-S, Li, F., and Malik, M. R. “Response of Swept Leading-Edge Flows to Line Impulsive Excitation,” AIAA Paper 99-0815, AIAA 37th Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan. 1999. Lin, R.-S and Malik, M. R. “Oblique Modes in Attachment-Line Boundary Layer,” AIAA Paper 99-0812, AIAA 37th Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan. 1999. 4
Malik, M. R., Lin, R.-S., and Sengupta, R. “Computation of Hypersonic Boundary-Layer Response to External Disturbances,” AIAA Paper 99-0411, AIAA 37th Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan. 1999. Lin, R.-S, Iyer, V., and Malik, M. R. “Effect of Throat Heating on Critical Roughness and the Stability of Nozzle Wall Boundary Layer,” AIAA Paper 98-2437, AIAA 29th Fluid Dynamics Conference, Albuquerque, NM, June 1998. Coleman, C. P., Poll, D. I. A., and Lin, R.-S. “Experimental and Computational Investigation of Leading Edge Transition at Mach 1.6,” AIAA Paper 97-1776, AIAA 28th Fluid Dynamics Conference, Snowmass, CO, June 29July 2, 1997. Wang, W.-P., Lin, R.-S., Malik, M. R., and Edwards, J. R. "Control of Corner Flow Vortices by Geometry Shaping in a Mach 2.4 Rectangular Nozzle" AIAA Paper 97-2228, AIAA Applied Aerodynamics Conference, Atlanta, GA, June 1997. Lin, R.-S., Li, F., and Malik, M. R. “Absolute Instability in Swept Leading-Edge Boundary Layers,” presented at the APS 50th Annual Meeting, Division of Fluid Dynamics, San Francisco, CA, Nov. 1997. Lin, R.-S. and Malik, M. R. “On the Stability of Attachment-Line Boundary Layers: Part 2. The Effect of Leading-Edge Curvature,” J. Fluid Mech., Vol. 333, pp. 125-137, 1997. Lin, R.-S. and Malik, M. R. “On the Stability of Attachment-Line Boundary Layers: Part 1. The Incompressible Swept Hiemenz Flow,” J. Fluid Mech., Vol. 311, pp. 239-255, 1996. Lin, R.-S. and Malik, M. R. "Linear Stability of Incompressible Viscous Flow along a Corner," Proc. of the Symposium on Boundary Layer and Free Shear Flows, ASME Fluids Engineering Conference, eds. J. F. Donovan & M. W. Plesniak, FED-Vol. 237, pp.633-638, San Diego, CA, July 1996. Lin, R.-S. and Malik, M. R. "Instability of a Mach 2.4 Slow-Expansion Square Nozzle Flow," AIAA Paper 960784, AIAA 34th Aerospace Sciences Meeting, Reno, Nevada, Jan. 1996. Lin, R.-S. and Malik, M. R. "Instabilities of the Hiemenz Flow," presented at the APS 48th Annual Meeting, Division of Fluid Dynamics, Orange County, CA, Nov. 1995. Lin, R.-S. and Malik, M. R. "Stability and Transition in Compressible Attachment-Line Boundary-Layer Flow," presented at the SAE Aerotech '95, SAE Paper 952041, Los Angeles, CA, Oct. 1995. Lin, R.-S., Agarwal, N. K., and Collier, F. S. "Numerical Study on the Receptivity due to a Localized Suction Slot," ASME Fluids Engineering Conference, FED-Vol. 216, pp. 179-184, Hilton Head, SC, July 1995. Lin, R.-S. and Malik, M. R. "An Iterative Method for Large-Scale Stability Problems," presented at the APS 47th Annual Meeting, Division of Fluid Dynamics, Atlanta, GA, Nov. 1994. Lin, R.-S. and Malik, M. R. "The Stability of Incompressible Attachment-Line Boundary Layers -- A 2DEigenvalue Approach," AIAA Paper 94-2372, 1994, AIAA 25th Fluid Dynamics Conference, Colorado Springs, CO, June 1994. Lin, R.-S. and Malik, M. R. "Effect of Surface Curvature and Wall Suction on the Stability of the Swept-Wing Attachment-Line Boundary Layer," presented at the SAE Aerotech '94, Los Angeles, California, Oct. 1994. Lin, R.-S. and Malik, M. R. "A Generalized Method for the Stability of Incompressible Attachment-Line Flow," in Transition, Turbulence and Combustion, eds. M. Y. Hussaini, T. B. Gatski, & T. L. Jackson, Vol. I, pp. 127136, Kluwer Academic Publishers, 1994. Lin, R.-S. and Malik, M. R. "The Incompressible Attachment-Line Boundary-Layer Stability," in IUTAM Symposium on Laminar-Turbulent Transition, Ed. R. Kobayashi, pp. 61-68, Sendai, Japan, Sept. 1994. Lin, R.-S. and Malik, M. R. "The Stability of Incompressible Attachment-Line Boundary Layers -- A 2DEigenvalue Approach," presented at the APS 47th Annual Meeting, Division of Fluid Dynamics,Albuquerque, NM, Nov. 1993. Lin, R.-S. and Reed, H. L. “Effect of Curvature on Stationary Crossflow Instability of a Three-Dimensional Boundary Layer,” AIAA Journal, Vol. 31, No. 9, pp. 1611-1617, 1993. 5
Vijgen, P., Lin, R.-S., Spencer, S. A., and Viken, J. "F-16XL Ship-2 Precursor Flight Test NASA-LaRC LFCPO Data Analysis -- Attachment-Line Transition Correlation," SAE Aerotech '93, Los Angeles, CA, Oct. 1993. Reed, H. L., Lin, R.-S., and Petraglia, M. M. “Streamline-Curvature Effect in Three-Dimensional Boundary Layers,” SAE Paper 921987, SAE Aerotech ‘92, Anaheim, CA, Oct. 1992. Lin, R.-S. and Reed, H. L. "Numerical Investigations of Stationary Crossflow Vortices in a Three-Dimensional Boundary Layer," presented at the APS 45th Annual Meeting, Division of Fluid Dynamics, Scottsdale, AZ, Nov. 1991. Reed, H. L. and Lin, R.-S. "Stability of Three-Dimensional Boundary Layers," SAE Paper 87-1857, 1987.
REFERENCES Dr. Van Slooten, Paul R., Senior Director, Thermal & Fluid Sci, United Technologies Research Center 411 Silver Lane, East Hartford, CT 06108 e-mail: [email protected] phone: +1 (860) 610-7397 Brian E. Wake, Ph.D., LM Fellow, Aerodynamics and Special Projects, Sikorsky, Lockheed-Martin M/S B101A, 1210 South Ave, Bridgeport, CT 06601-1381 e-mail: [email protected] phone: +1 (203) 384-6633 Dr. Srinivasan, Shiva, Global Tech. Lead, Gas Turbine Technology, GE Energy 300 Garlington Rd, Greenville, SC 29615 e-mail: [email protected] phone: +1 (864) 884-7843 (cell) Dr. Proscia, William (Bill), Fellow, Instability Modeling & Analysis, Pratt & Whitney 400 Main Street, East Hartford, CT 06118 e-mail: [email protected] phone: +1 (860) 557-4445
HOBBIES Reading, Fishing, Table Tennis, Private Pilot