Novel Technologies for Efficient NTP Reactor Decay Heat Removal and Utilization, Phase I

Metadata Updated: November 12, 2020

In this SBIR, Ultra Safe Nuclear Corporation (USNC) will investigate and develop a set of novel technologies to minimize the amount of hydrogen needed for reactor decay heat removal after the shutdown of Nuclear Thermal Propulsion (NTP) systems. Decay heat is the energy deposited during the decay of radioactive fission products after the reactor shuts down. Its management is a critical issue for NTP systems. USNC’s technology will be an effective, yet simple, solution to address decay heat removal. Central to USNC’s optimized strategy for decay heat removal is maximizing the temperature that hydrogen is ejected and maximizing radiative heat transfer from the available surfaces of the rocket and nozzle. Furthermore, USNC’s comprehensive solution generates small amounts of electrical power with the removed decay heat, increasing mission flexibility and resilience. Specifically, USNC will primarily investigate four technologies to minimize hydrogen usage: 

  • The inclusion of coolant channels on the outside structure of the tie tube between the insulator and fuel that can heat hydrogen to hotter temperatures than the zirconium hydride moderator can maintain. 

  • Circulating hydrogen through the tie tube and the outer structure of the core to maximize heat rejection by radiation. 

  • Conversion of some of the heat into useful work through the addition of a power generation unit. 

  • Using computationally-intensive optimization to find the best possible strategies and power cycle configurations to minimize the amount of hydrogen ejected from the system

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Publisher Space Technology Mission Directorate
Unique Identifier Unknown
Identifier TECHPORT_94698
Data First Published 2019-01-01
Data Last Modified 2020-01-29
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
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Catalog Describedby
Harvest Object Id 8223737f-d6fc-492f-a6b3-c8221732f03b
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Program Code 026:027
Source Datajson Identifier True
Source Hash 3d95e5b33de145541edb860081a16ed340217185
Source Schema Version 1.1

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