ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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!
Latest Magazine Issues
Oct 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
November 2025
Nuclear Technology
Fusion Science and Technology
October 2025
Latest News
Researchers use one-of-a-kind expertise and capabilities to test fuels of tomorrow
At the Idaho National Laboratory Hot Fuel Examination Facility, containment box operator Jake Maupin moves a manipulator arm into position around a pencil-thin nuclear fuel rod. He is preparing for a procedure that he and his colleagues have practiced repeatedly in anticipation of this moment in the hot cell.
Harold P. Smith, Jr.
Nuclear Science and Engineering | Volume 18 | Number 4 | April 1964 | Pages 508-513
Technical Paper | doi.org/10.13182/NSE64-A18769
Articles are hosted by Taylor and Francis Online.
A previous work on the closed-loop dynamics of nuclear rocket engines with bleed turbine drive3 is modified to study the engine dynamics using a topping turbine system. Root locus considerations show that the response characteristics of the two engine systems should be similar, although the topping turbine system has a faster initial response but slower asymptotic response. These conclusions are corroborated by analog simulation of the non-linear dynamic equations.