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Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
ANS announces 2025 Presidential Citations
One of the privileges of being president of the American Nuclear Society is awarding Presidential Citations to individuals who have demonstrated outstanding effort in some manner for the benefit of ANS or the nuclear community at large. Citations are conferred twice each year, at the Annual and Winter Meetings.
ANS President Lisa Marshall has named this season’s recipients, who will receive recognition at the upcoming Annual Conference in Chicago during the Special Session on Tuesday, June 17.
Andrew Greenop, Jae Keun Choi, Bryant Phan, Per F. Peterson (Univ of California, Berkeley)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 825-834
Coiled-Tube Gas Heaters (CTGHs) are shell-and-tube heat exchangers that incorporate small coiled tubes with a gas (supercritical CO2 or air) flowing radially through the tube bundle cooling the liquid inside the tubes. This design reduces the overall volume of the tube bundle while maximizing the heat transfer surface area, improves the effectiveness of the heater, and allows for large pressure differentials between the two heat transfer fluids. CTGHs are optimal for use as the primary heat exchanger in small modular reactors, such as SFRs and FHRs. In a previous paper, a design and optimization code, called THEEM, was developed to model CTGHs using non-dimensional heat transfer and fluid data. In order to experimentally validate this code, the Coiled-tube Air-heater Separate Effects Test (CASET) experiment was built. CASET consists of a single CTGH sub-bundle in an acrylic vessel that uses room temperature air to cool hot water in the bundle. The initial validation experiments indicate that THEEM can accurately predict the temperatures and heat exchanger effectiveness, but the pressure drop calculations may need to be reevaluated. CASET was also used to measure the distribution of the air flowing through the bundle, which could then be used to improve THEEM in the future. Finally, the Wilson plot method was used to develop heat transfer convection correlations for both the shell-side and tube-side fluids, which could have applications to other coiled tube heat exchangers.