All Stories

  1. The Centrifugal Nuclear Thermal Rocket: Foundations, Challenges, and Progress

    Article • January 2025, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  2. Propulsion Research and Academic Programs at the University of Alabama in Huntsville – Research Review

    Article • January 2025, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  3. Propulsion Research and Academic Programs at The University of Alabama in Huntsville - Research Laboratories

    Article • January 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick, Dale Thomas

  4. Advanced Propulsion Project to Integrate Trajectories, Aerodynamics, Combustion, Solid and Air-Breathing Propulsion

    Article • January 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  5. 2023 University of Alabama in Huntsville Student Launch Rocket Program

    Article • January 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  6. Porosity Effects on Axial-Injection, End-Burning Hybrid Rocket Motor Regression

    Article • August 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick, Joseph Agnew

  7. Propellant Throttling Effects on the Self-Pulsation Boundary for a Liquid-Gas Dual Swirl Coaxial Injector

    Article • August 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Isheeta Ranade , Dr Robert A. Frederick

  8. Development of an Optically Accessible Racetrack-Type Rotating Detonation Rocket Engine

    Article • August 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  9. Experimental Investigation of Spray Characteristics for Different Geometrical Misalignment Cases of Like Doublet Impinging Injector

    Article • August 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  10. Review of Nuclear Thermal Propulsion Technology for Deep Space Missions

    Article • August 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Dale Thomas, Saroj Kumar, Dr Robert A. Frederick

  11. Propulsion Research and Academic Programs at the University of Alabama in Huntsville - PRC Graduate Student Production History

    Article • August 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  12. Experimental Investigation of PMMA Cooling Beds for Warm Gas Generator Applications

    Article • August 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Amit Patel, Dr Robert A. Frederick

  13. Ramjet Fuel Mixture Optimization

    Article • August 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  14. Space Charge Limited Conduction in Polyvinyl Alcohol+Hydroxylammonium Nitrate Solid Propellant

    Article • Journal of Propulsion and Power, May 2020, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  15. Experimental Study of Swirl Coaxial Injector Hydrodynamics Under High- Frequency Self- Pulsation

    Article • August 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick, Isheeta Ranade

  16. Gas Cooling Generator Technologies for Aerospace Applications

    Article • August 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Amit Patel, Dr Robert A. Frederick

  17. Uncertainty Analysis of Experimental Discharge Coefficients in Additively Manufactured Liquid Injector Elements

    Article • August 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  18. Propulsion Research and Academic Programs at the University of Alabama in Huntsville - PRC Strategic Plan– 2019

    Article • August 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  19. Collaborative Space and Propulsion Education: Leveraging all sectors of the space enterprise to benefit the future U.S. Space and Propulsion Workforce!

    Article • August 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  20. Regression Rate Model Predictions of an Axial-Injection End-Burning Hybrid Motor

    Article • Journal of Propulsion and Power, September 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  21. Propulsion Research and Academic Programs at the University of Alabama in Huntsville - 2018

    Article • July 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  22. Considerations for Safety in University-based Test Operations at the UAH Propulsion Research Center

    Article • July 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick, Vivian Braswell

  23. Details on the Mechanism of High-Frequency Swirl Coaxial Self-Pulsation

    Article • Journal of Propulsion and Power, November 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  24. Experimental Evaluation of a Nitrous-Oxide Axial-Injection, End-Burning Hybrid Rocket

    Article • Journal of Propulsion and Power, November 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  25. Electrolytic Combustion in the Polyvinyl Alcohol Plus Hydroxylammonium Nitrate Solid Propellant

    Article • Journal of Propulsion and Power, November 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  26. Parametric Evaluation of Swirl Injector Dynamics in the High-Frequency Range

    Article • Journal of Propulsion and Power, September 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  27. Propulsion Research and Academic Programs at the University of Alabama in Huntsville

    Article • July 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  28. Fluid Oscillations of a Swirl Coaxial Injector Under High-Frequency Self-Pulsation

    Article • Journal of Propulsion and Power, July 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  29. Jet Breakup Length to Impingement Distance Ratio for Like Doublet Injectors

    Article • Journal of Propulsion and Power, November 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  30. Laboratory Experimentation and Basic Research Investigating Electric Solid Propellant Electrolytic Characteristics

    Article • July 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  31. Measurement of Micro-Thruster Performance Characteristics Using a Magnetically Levitating Thrust Stand

    Article • July 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Amit Patel, Dr Robert A. Frederick

  32. Electrolytic Combustion in the Polyvinyl Alcohol + Hydroxyl Ammonium Nitrate Solid Propellant

    Article • July 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  33. Overview of X-Ray Techniques for Solid Rocket Propellant Regression Measurements

    Article • July 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  34. An Overview of Combustion Instabilities and Rocket Engine Injector Design

    Article • July 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  35. UAH Propulsion Research Center - 25th Anniversary Highlights

    Article • July 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  36. Experimental Evaluation of a Polyethylene/Nitrous Oxide Axial-Injection, End-Burning Hybrid

    Article • July 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  37. Overview of Vortex Injected Hybrid Rocket Engines-Regression Rate Modeling

    Article • July 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  38. Testing and Modeling of a Porous Axial-Injection, End-Burning Hybrid Motor

    Article • Journal of Propulsion and Power, July 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  39. Combustion Instability Control Through Acoustic Modulation at the Inlet Boundary: Experiments

    Article • Journal of Propulsion and Power, November 2015, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  40. Combustion Instability Control Through Acoustic Modulation at the Inlet Boundary: Analysis

    Article • Journal of Propulsion and Power, November 2015, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  41. Experimental Study on the Effects of Varying the Impingement Distance of Like-Doublet Injectors

    Article • July 2015, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  42. An Advanced Digital Cross Correlation Method for Solid Propellant Burning Rate Determination

    Article • July 2015, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  43. Dynamic Calibration and Analysis of Crack Tip Propagation in Energetic Materials using Real-Time Radiography

    Article • July 2015, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  44. Design of a 3-D Printed Unified Hybrid Motor

    Article • July 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  45. The Effect of Liquid Jet Breakup Length upon the Spray Dynamics of Like-Doublet Impinging Injectors

    Article • July 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  46. Strategies for Successful University, Industry, and Government Collaborations

    Article • July 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  47. Application of Band-Limited White Noise & Single Frequency Acoustic Modulation as a Control Mechanism for Liquid Rocket Engine Combustion Instabilities

    Article • July 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  48. An Analytical Investigation Characterizing the Application of Single Frequency Acoustic Modulation for High Frequency Combustion Instability Suppression

    Article • July 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  49. Mechanistic Assessment of Swirl Coaxial Injection by Quantitative X-Ray Radiography

    Article • Journal of Propulsion and Power, July 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  50. Burning Rate Optimization Under Uncertainty Using Response Surfaces and Monte Carlo Simulation

    Article • Journal of Propulsion and Power, July 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick

  51. Suppressing a High-Frequency Instability with Varying Bands of White Noise

    Article • Journal of Propulsion and Power, July 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Robert A. Frederick