Our Staff

Dr. Peter M. Struk

peter.m.struk@nasa.gov

Expertise:

• Icing Crystal Icing
• Experimental Icing

Publications:

• NASA Analysis of Alternatives Study for Icing Research (2022)
• Ice-Crystal Icing Accretion Studies at the NASA Propulsion Systems Laboratory(2019)
• Ice Crystal Icing Physics Study using a NACA 0012 Airfoil at the National Research Council of Canada’s Research Altitude Test Facility (2018)
• An Initial Study of the Fundamentals of Ice Crystal Icing Physics in the NASA Propulsion Systems Laboratory (2017)
• Ice Accretion Measurements on an Airfoil and Wedge in Mixed-Phase Conditions(2015)
• A Thermal Analysis of a Hot-Wire Probe for Icing Applications (2014)
• Fundamental Ice Crystal Accretion Physics Studies (2011)

Tadas Bartkus

tadas.p.bartkus@nasa.gov

Publications:

• Icing Physics Studies Using the 3D SIDRM Test Article: Aerodynamic and Supercooled Liquid Icing Analysis (2023)
• Description of Cloud Characterization and Icing Tests for a 3D Heated Test Article at the NASA Icing Research Tunnel (2022)
• Comparisons of CFD Simulations of Icing Wind Tunnel Clouds with Experiments Conducted at the NASA Propulsion Systems Laboratory (2020)
• Analysis of Experimental Ice Accretion Data and Assessment of a Thermodynamic Model during Ice Crystal Icing (2019)
• Evaluation of a Thermodynamic Ice Crystal Icing Model Using Experimental Ice Accretion Data (2018)
• Comparisons of Mixed-Phase Icing Cloud Simulations with Experiments Conducted at the NASA Propulsion Systems Laboratory (2017)
• Numerical Analysis of Mixed-Phase Icing Cloud Simulations in the NASA Propulsion Systems Laboratory (2016)
• Development of a Coupled Air and Particle Thermal Model for Engine Icing Test Facilities (2015)

Awards:

• The Society of Automotive Engineers (SAE) Arch T. Colwell Merit Award, which recognizes authors of outstanding papers presented at SAE meetings. Papers are judged for their value as contributions to existing knowledge of mobility engineering, and primarily with respect to their value as an original contribution to the subject matter. (April 2017)
• The Society of Automotive Engineers (SAE) Wright Brothers Medal, which recognizes the best papers relating to the invention, development, design, construction, or operation of an aircraft and/or spacecraft presented at a meeting of the Society or any of its sections. (September 2017)

Featured: 

• Aerospace America Magazine “Solving Engine Icing” (Sept 2017)
• NASA Glenn Instagram (March 2023)
  • Finding ways to avoid ice buildup on aircraft is the job of #NASAglenn researchers like Tadas Bartkus and a team of engineers, technicians and specialists. Working in the Icing Research Tunnel, they study the icing physics that occur on airframe surfaces and within jet engines when aircraft fly through freezing weather conditions.

Andy Broeren

abroeren@nasa.gov

Expertise:

• Icing Aerodynamics
• Ice Acccretion Testing and Experimental Simulation
• Ground Icing
• Wind Tunnel Testing

Publications:

• Additional Large-Drop Ice Accretion Test Results for a Large Salce Swept Wing Section from January 2022 (2023)
• Experimental and Computational Icing Simulation for Large Swept Wings (2022)
• Aerodynamics of a Common Research Model Wing with Leading-Edge Ice Shape (2021)
• Large-Drop Ice Accretion Test Results for a Large Scale Swept Wing Section (2021)
• Comparison of Computational and Experimental Ice Accretions of Large Swept Wings (2020)
• Effect of Geometric Fidelity on the Aerodynamics of a Swept Wing with Glaze Ice Accretion (2020)
• Three-Dimensional Ice-Accretion Measurement Methodology for Experimental Aerodynamic Simulation (2018)

Ru-Ching Chen

ru-ching.chen@nasa.gov

Publications:

• Analysis of Hot-Wire Probe Ice Water Content Measurements in High Ice Water Content Conditions (2024)
• Impact Ice Microstructure Segmentation Using Transfer Learned Model (2023)
• Simulation of Fluid Flow and Collection Efficiency for a SEA Inc. Multi-Element Probe and Ice Crystal Detector Using GlennICE (2022)
• Evaluation of a Thermodynamic Ice Crystal Accretion Model using Experimental Data from NASA’s 2nd Fundamental Ice Crystal Icing Test (2021)
• Cloud Uniformity Measurement from NASA’s 2nd Fundamental Ice Crystal Icing Test Part 1 (Water Content & PSD) (2020)

Curtis Flack

curtis.a.flack@nasa.gov

James Frantz

james.e.frantz@nasa.gov

Eric Galloway

eric.t.galloway@nasa.gov

Christopher Giuffre

christopher.giuffre@nasa.gov

Expertise:

• Fracture Mechanics
• Ice Adhesion
• Digital Image Correlation

Publications:

• In-Situ Ice Adhesion Testing using the Deformed Skin Adhesion Test (2024)
• Impact Ice Adhesion at NASA Glenn: Current Experimental Methods and Supporting Measurements (2023)
• Impact Ice Microstructure Segmentation Using Transfer Learned Model (2023)
• The Measurement of Shear Strain in Impact Ice Using a Modified Lap Joint Test and Digital Image Correlation (2022)

Publicity:

• Duluth’s NASA stars fly home for Airshow – WDIO.com (2024 Duluth Air and Aviation Expo Outreach)

Sam Lee

sam.lee-1@nasa.gov

Thomas Ozoroski

thomas.ozoroski@nasa.gov

Expertise:

• Computational/Experimental Validation
• Computational Icing
• Wind-Tunnel CFD Characterization
• Mesh Adaptation Methods

Publications:

• Analysis of Ice Mass Growth Over Time on the CRM65 Midspan Hybrid Model (2024)
• Glenn Icing Computational Environment (GlennICE) Results and Analysis (2023)
• Overview of the Computational Fluid Dynamic Analyses of the Virginia Tech/NASA BeVERLI Hill Experiments (2022)
• Comparison of hill-type geometries for the validation and advancement of turbulence models (2022)
• CFD Analysis of the BeVERLI Hill Turbulence Model Validation Experiments (2022)
• Multiscale Mesh Adaptation for Transonic Aeroelastic Flutter Problems (2021)

Christopher Porter

christopher.e.porter@nasa.gov

Publications:

• Utilization of Streamtubes to Analyze the Physical Interaction of a Dispersed Cloud With the CRM65 Hybrid Midspan Model (2024)
• A Comparison of Trajectory Refinement Schemes for GlennICE (2022)
• Three Dimensional Surface Redefinition Method for Computational Ice Accretion Solvers (2020)
• In-Duct Assessment of a Linearized Unsteady Navier-Stokes Scheme for Compressor Tone Noise (2016)

Thomas Ratvasky

thomas.p.ratvasky@nasa.gov

Expertise:

• SLD and ICI Atmospheric Flight Research and Instrumentation
• Icing Effects Flight Simulation
• Tailplane Icing

Publications:

• Air Data Probe Anomalies in Flight through Measured High Ice Water Content Conditions (2024)
• Isokinetic Probe Total Water Content Measurements in the NASA Icing Research Tunnel with Supercooled Large Drop Conditions (2021)
• Simultaneous Ice Water Content Measurements at Multiple Locations on the NASA DC-8 Aircraft During the 2018 HIWC RADAR Flight Campaign (2021)
• Summary of the High Ice Water Content (HIWC) RADAR Flight Campaigns (2019)
• Current Methods for Modeling and Simulating Icing Effects on Aircraft Performance, Stability and Control (2010)
• Demonstration of an Ice Contamination Effects Flight Training Device (2006)
• NASA/FAA Tailplane Icing Program Overview (1999)

David Rigby

rigby@nasa.gov

Publications:

• GlennICE Simulation of 24, 28 and 36 Inch Diameter eVTOL Propellers in Forward Flight – NASA Technical Reports Server (NTRS)
• Demonstration of Initial GlennICE Relative Frame Capability: Axial-Flow Propeller – NASA Technical Reports Server (NTRS)
• Convergence Criteria for Lagrangian Collection Efficiency Simulations – NASA Technical Reports Server (NTRS)
• Numerical Investigation of Heat Transfer on the NASA SIDRM Model – NASA Technical Reports Server (NTRS)
• Simulation of Fluid Flow and Collection Efficiency at Low Stokes Number – NASA Technical Reports Server (NTRS)

Zaid Sabri

zaid.h.sabri@nasa.gov

Expertise:

• Computational Fluid Dynamics
• Simulating in-flight icing using appropriate scaling methods

Publications:

• A Study of Parallel Scalability and Dynamic Workload Balancing in GlennICE (2024)
• Scalability of GlennICE in a Parallel Environment (2023)
• Analysis of Supercooled Large Drop Velocity Measurement in the NASA Icing Research Tunnel (2023)
• Steady-State Low-Order Explicit (LOE) Runge-Kutta Schemes with Improved Convergence (2023)
• On the Efficiency of Higher-Order Implicit Solvers for Compressible Flow (2023)

Eric Stewart

eric.a.stewart@nasa.gov

Benjamin Sumlin

benjamin.sumlin@nasa.gov

Jenching Tsao

jenching.tsao-1@nasa.gov

Expertise:

• Development of appropriate icing scaling methods for simulating in-flight icing on modern aircraft
• Ice accretion testing in IRT and PSL in App. c, o and d regimes

Publications:

• Characterization of Large Drop Velocity in the NASA Icing Research Tunnel (2024)
• Comparison of Bimodal Ice Shapes on Full-Chord and Hybrid CRM Midspan Models (2022)
• Characterization of Collection Efficiency of the common Research Model Midspan Wing Section in the IRT (2021)
• Bimodal SLD Ice Accretion on a CRM Midspan Wing Section Models (2021)
• Scaling Evaluation of Ice-Crystal Icing on a Modern Turbofan Engine in PSL Using the COMDES-MELT Code (2019)
• Further Evaluation of Swept Wing Icing Scaling with Maximum Combined Cross Section Ice Shape (2018)
• Preliminary Evaluation of Altitude Scaling for Turbofan Engine Ice Crystal Icing (2017)
• Altitude Scaling of Thermal Ice Protection System in Running Wet Operation (2017)
• Additional Results of Glaze Icing Conditions in SLD Conditions (2016)
• Further Evaluation of Scaling Methods for Rotorcraft Icing (2011)
• Evaluation of Icing Scaling on Swept NACA 0012 Airfoil Models (2011)

Judith Van Zante

judith.f.vanzante@nasa.gov

Publications:

• SLD Instrumentation in Icing Wind Tunnels – Investigation Overview (2021)
• NASA Glenn Icing Research Tunnel: 2019 Cloud Calibration Procedure and Results (2021)
• Update on the NASA Glenn Propulsion Systems Lab Icing and Ice Crystal Cloud Characterization (2015, 2016)
• Numerical Analysis of Mixed-Phase Icing Cloud Simulations in the NASA Propulsion Systems Laboratory (2016)
• An Assessment of the Icing Blade and the SEA Multi-Element Sensor for Liquid Water Content Calibration of the NASA GRC Icing Research Tunnel (2016)
• NASA Glenn Propulsion Systems Lab: 2012 Inaugural Ice Crystal Cloud Calibration (2012)
• Advanced Optical Diagnostics for Ice Crystal Cloud Measurements in the NASA Glenn Propulsion Systems Laboratory (2013)
• NASA Glenn Icing Research Tunnel: 2014 Cloud Calibration Procedure and Results (2014)
• NASA Glenn Icing Research Tunnel: 2012 Cloud Calibration Procedure and Results (2012)
• A Database of Supercooled Large Droplet Ice Accretions (2007)
• Update of NASA’s Icing Training Aids for Pilots (2006)
• NASA/FAA Tailplane Icing Program: Flight Test Report (2000)
• Wind Tunnel Experiments for Grades 8-12 (1999), Designed on-line tutorial for NASA’s Learning Technologies Project.
• Investigation of Dynamic Flight Maneuvers with an Iced Tailplane (1999)
• Large- and Small-Scale Vortical Motions in a Shear Layer Perturbed by Tabs (1999)

NASA’s Icing Training Aids for Pilots

• A Pilot’s Guide to Ground Icing (2006)
• A Pilot’s Guide to In-Flight Icing (2005)
• NASA In-Flight Icing Training for Pilots, DVD and CD, GRC-423, Collection 2, 9/2004.
• Supercooled Large Droplet Icing, DVD, 3/2004.
• NASA In-Flight Icing Training for Pilots, DVD and CD, GRC-423, Collection 1, 9/2003.
• Icing for General Aviation Pilots, VHS and DVD, 3/2002.
• Icing for Regional and Corporate Pilots, VHS, 9/1999.
• Tailplane Icing, VHS, 9/1998.

Paul Von Hardenberg

paul.h.vonhardenberg@nasa.gov

William Wright

william.b.wright@nasa.gov

Publications:

• GlennICE 2.1 Capabilities and Results (2022)
• An Automated Refinement Process for Particle Trajectory Methods in GlennICE (2021)
• A Revised Validation Process for Ice Accretion Codes (2017)
• Mixed Phase Modeling in GlennICE with Application to Engine Icing (2010)
• Further Refinement of the LEWICE SLD Model (2006)
• Validation Results for LEWICE 3.0 (2005)
• An Evaluation of Jet Impingement Heat Transfer Correlations for Piccolo tube  Application (2004)
• Validation Methods and Results for a Two-Dimensional Ice Accretion Code (1999)
• Validation of NASA thermal ice protection computer codes II – LEWICE/Thermal (1997)
• Additional Improvements to the NASA Lewis Ice Accretion Code LEWICE (1995)
• Advancements in the LEWICE Ice Accretion Model (1993)
• Two Dimensional Simulation of Electrothermal Deicing of Aircraft Components (1989)

Awards:

• Awarded Exceptional Technological Achievement Award by NASA (2016)
• LEWICE awarded 2^nd place in NASA “Software of the Year” competition (2010)
• Performance Award for Exceptional Work for involvement with validation effort for LEWICE 2.0 software (2000)

Angela Williams

angela.l.williams@nasa.gov