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[Slashdot] - New Nuclear Engine Concept Could Help Realize 3-Month Trips To Mars

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Seattle-based Ultra Safe Nuclear Technologies (USNC-Tech) has developed a concept for a new Nuclear Thermal Propulsion (NTP) engine that they claim is safer and more reliable than previous NTP designs and with far greater efficiency than a chemical rocket. The concept could reduce Earth-Mars travel time to just three months. New Atlas reports: According to Dr. Michael Eades, principal engineer at USNC-Tech, the new concept engine is more reliable than previous NTP designs and can produce twice the specific impulse of a chemical rocket. Specific impulse is a measure of a rocket's efficiency. To fuel the concept, UNSC-Tech uses a Fully Ceramic Micro-encapsulated (FCM) fuel to power the engine's reactor. This fuel is based on High-Assay Low Enriched Uranium (HALEU), which is derived from reprocessed civilian nuclear fuel and is enriched to between 5 and 20 percent -- greater than that of civilian reactors and less than that of naval reactors. The fuel is then encapsulated into particles coated with zirconium carbide (ZrC). The company claims that this fuel is much more rugged than conventional nuclear fuels and can operate at high temperatures. This produces safer reactor designs and a high thrust and specific impulse that could previously only be obtained with highly-enriched uranium. In addition, such fuel can be produced with current supply chains and manufacturing plants. It is hoped the new concept could lead to nuclear engines that reduce deep space mission times drastically, with a crewed mission to Mars arriving in as little as three months. Beyond that, the concept is aimed at a commercial market as well as with NASA and the US Department of Defense, allowing for more ambitious private missions.

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Read more of this story at Slashdot.

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