Future crewed space missions beyond low earth orbit will almost certainly require propulsion systems with performance levels exceeding that of today's best chemical engines. A likely candidate for that propulsion system is the solid core Nuclear Thermal Rocket or NTR. Solid core NTR engines are expected to have performance levels which significantly exceed that achievable by any currently conceivable chemical engine. The challenge is in the engineering details of the design which includes not only the thermal, fluid, and mechanical aspects always present in chemical rocket engine development, but also nuclear interactions and some unique materials restrictions.
- Sorts and organizes information on various types of nuclear thermal rocket engines into a coherent curriculum- Includes a number of example problems to illustrate the concepts being presented- Features a companion site with interactive calculators demonstrating how variations in the constituent parameters affect the physical process being described- Includes 3D figures that may be scaled and rotated to better visualize the nature of the object under study
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1. Introduction 2. Rocket Engine Fundamentals 3. Nuclear Rocket Engine Cycles 4. Interplanetary Mission Analysis 5. Basic Nuclear Structure and Processes 6. Neutron Flux Energy Distribution 7. Neutron Balance Equation and Transport Theory 8. Multigroup Neutron Diffusion Equations 9. Thermal Fluid Aspects of Nuclear Rockets 10. Turbomachinery 11. Nuclear Reactor Kinetics 12. Nuclear Rocket Stability 13. Fuel Depletion Implications for Long Duration Operation 14. Shielding of Nuclear Rockets 15. Materials for Nuclear Thermal Rockets 16. Nuclear Rocket Engine Testing 17. Advanced Nuclear Rocket Concepts
Dr. Emrich has worked at the NASA Marshall Center for over 27 years, starting in 1987 in Software Quality Assurance. Now a Senior Engineer, Emrich is working at the forefront of research that is propelling America's journey to Mars. Emrich conceived, designed and now operates the megawatt-class Nuclear Thermal Rocket Element Environment Simulator. In 2015, he became the second Marshall team member to win the coveted AIAA Engineer of the Year award. The award is presented to a member of AIAA who has made a recent individual contribution in the application of scientific and mathematical principles leading to a significant accomplishment or event.
He earned numerous college degrees including a bachelor's degree in mechanical engineering from Georgia Institute of Technology; a master's degree in nuclear engineering from the Massachusetts Institute of Technology; and a doctorate in mechanical and aerospace engineering from the University of Alabama in Huntsville, where he now teaches nuclear rocket propulsion for the Mechanical and Aerospace Engineering Department and mentors young engineers.