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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.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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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Commercial nuclear innovation "new space" age
In early 2006, a start-up company launched a small rocket from a tiny island in the Pacific. It exploded, showering the island with debris. A year later, a second launch attempt sent a rocket to space but failed to make orbit, burning up in the atmosphere. Another year brought a third attempt—and a third failure. The following month, in September 2008, the company used the last of its funds to launch a fourth rocket. It reached orbit, making history as the first privately funded liquid-fueled rocket to do so.
W. J. M. de Kruijf, A. J. Janssen
Nuclear Science and Engineering | Volume 123 | Number 1 | May 1996 | Pages 121-135
Technical Paper | doi.org/10.13182/NSE94-108
Articles are hosted by Taylor and Francis Online.
Calculations of resonance absorption for simple temperature profiles both in a slab and in a pin of 238UO2 are presented to show the influence of a nonuniform fuel temperature profile on the choice of the equivalent uniform temperature, or the effective fuel temperature. The effective fuel temperature is given as a weighted average of the temperatures in the fuel zones. Two simple theoretical expressions for this weighted average, derived from the literature, are discussed. First, for high absorption, the effective fuel temperature is given by the so-called chord-averaged fuel temperature. Second, for low absorption, the effective fuel temperature is given by the volume-averaged fuel temperature. The results for a slab of 238UO2 show that a bruteforce method is necessary to calculate an accurate effective fuel temperature. A set of weights for one specific 238UO2 pin is calculated. This set agrees well with the chord-averaged fuel temperature. However, this appears to be a coincidence because the results for specific neutron energy ranges do not agree with this set of weights.
