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7. Steady-State In-Pile Nuclear Thermal Propulsion Experimental Testbed Initial Demonstration at The Ohio State University Research Reactor.

Author

Steiner, Tyler R., Hutchins, Emily N., and Howard, Richard H.

Abstract

Nuclear thermal propulsion (NTP) demonstrated a reported technology readiness level of 5 during the work performed in the 1950s-1970s under the Rover program. This level of capability was achieved through the design, construction, and use of 22 experimental ground tests. These experiments served as testbeds for designs, materials, and instrumentation at prototypical NTP conditions. To continue the investigation into NTP system materials, components, and fuels, a modern experimental testbed has been designed and implemented. A steady-state, high-temperature, subscale, in-pile testbed has been developed to continue this investigation. The In-Pile Experiment Set Apparatus (INSET) has demonstrated that it can be used to test samples under two NTP prototypical environmental factors: temperature and neutron fluence. The demonstration using The Ohio State University Research Reactor is presented here. This demonstration required INSET to maintain a thermal environment below 1070 K for 15 min during a 5-h irradiation to achieve a neutron fluence around 1017 n/cm². [ABSTRACT FROM AUTHOR]

Published
2022
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8. Water Recovery X-Ray Rocket grating spectrometer

Author

Miles, Drew M., primary, Hull, Samuel V., additional, Schultz, Ted B., additional, Tutt, James H., additional, Wages, Mitchell, additional, Donovan, Benjamin D., additional, McEntaffer, Randall L., additional, Falcone, Abraham D., additional, Anderson, Tyler, additional, Bray, Evan, additional, Burrows, David N., additional, Chattopadhyay, Tanmoy, additional, Eichfeld, Chad M., additional, Empson, Nathan, additional, Grisé, Fabien, additional, Hillman, Christopher R., additional, McCoy, Jake A., additional, McQuaide, Maria, additional, Myers, Bailey J., additional, Steiner, Tyler, additional, Verschuuren, Marc A., additional, Yastishock, Daniel, additional, and Zhang, Ningxiao, additional

Published
2019
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11. An introduction to the water recovery x-ray rocket

Author

Miles, Drew M., primary, McEntaffer, Randall L., primary, Schultz, Ted B., primary, Donovan, Benjamin D., primary, Tutt, James H., primary, Yastishock, Daniel, primary, Steiner, Tyler, primary, Hillman, Christopher R., primary, McCoy, Jake A., primary, Wages, Mitchell, primary, Hull, Sam, primary, Falcone, Abe, primary, Burrows, David N., primary, Anderson, Tyler, primary, McQuaide, Maria, primary, and Chattopadhyay, Tanmoy, primary

Published
2017
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13. An introduction to the water recovery x-ray rocket.

Author

Miles, Drew M., McEntaffer, Randall L., Schultz, Ted B., Donovan, Benjamin D., Tutt, James H., Yastishock, Daniel, Steiner, Tyler, Hillman, Christopher R., McCoy, Jake A., Wages, Mitchell, Hull, Sam, Falcone, Abe, Burrows, David N., Chattopadhyay, Tanmoy, Anderson, Tyler, and McQuaide, Maria

Published
2017
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15. An introduction to the water recovery x-ray rocket

Author

Siegmund, Oswald H., Miles, Drew M., McEntaffer, Randall L., Schultz, Ted B., Donovan, Benjamin D., Tutt, James H., Yastishock, Daniel, Steiner, Tyler, Hillman, Christopher R., McCoy, Jake A., Wages, Mitchell, Hull, Sam, Falcone, Abe, Burrows, David N., Chattopadhyay, Tanmoy, Anderson, Tyler, and McQuaide, Maria

Published
2017
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16. High Temperature Steady-State In-Pile Experiment Development for Nuclear Thermal Propulsion Testing and Computational Radiative Heat Transfer Validation

Author

Steiner, Tyler

Abstract

A high temperature steady-state in-pile experiment was developed to simulate prototypical nuclear thermal propulsion conditions in addition to serve as a validation tool for radiative heat transfer computational methods. The experimental development of the test apparatus involved scaling the device to a larger heated region from a previous smaller out-of-pile prototype. A series of tests and investigations were conducted to replicate the smaller out-of-pile system's success of achieving 2500 K. However, limitations within the larger assembly were identified. The larger assembly can reliably generate usable temperature levels from room temperature up to those exceeding 1300 K. The larger system is achieving temperatures over 2500 K, but these are localized and unable to be monitored in the current design. Due to the limitations of the current heater, it is recommended that the apparatus be redesigned to utilize a heating element similar to that used during Project POODLE in the 1960s. However, the achieved temperature levels are still suitable for testing various components considered for a nuclear thermal rocket. Various in-pile experiments have been performed to test materials and instrumentation relevant to nuclear thermal rocket systems. This temperature level also provides sufficient thermal energy for radiative heat transfer studies. The experimental results were used to compare leading thermal modeling software packages and various solution methods. The experiment was compared against COMSOL and ANSYS. Within COMSOL the radiation view factors were calculated using the hemi-cube and the ray shooting solution methods. These were also compared against ANSYS, which utilized the hemi-cube view factor solution method.

Published
2021

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