Nuclear Thermal Propulsion Systems - Glenn Research Center
2023年12月18日 · To generate the heat and thrust for a thermal propulsion system like NTP, a source of energy is needed. In an NTP system, that heat is generated by flowing hydrogen through a reactor that is enriched with the fissile nucleus Uranium-235 in order to achieve fission.
Nuclear thermal rocket - Wikipedia
A nuclear thermal rocket (NTR) is a type of thermal rocket where the heat from a nuclear reaction replaces the chemical energy of the propellants in a chemical rocket. In an NTR, a working fluid , usually liquid hydrogen , is heated to a high temperature in a nuclear reactor and then expands through a rocket nozzle to create thrust .
Space Nuclear Propulsion - NASA
2024年10月21日 · Nuclear thermal propulsion provides high thrust at twice the propellant efficiency of chemical rockets, freeing up weight and mass for payload and mission-essential supplies aboard the spacecraft. Heat is generated in the fission reactor and directly transferred to a flowing liquid propellant turning it into a gas, which is then expanded and ...
Nuclear thermal propulsion (NTP) is a high-performance in-space propulsion technology which utilizes a reactor as a heat exchanger to directly heat a hydrogen propellant to enable high specific impulse (I SP > 850 s) and thrust (> 15 klbf). This combination of high I SP and thrust can reduce interplanetary trip times to destinations such as
How Does Nuclear Thermal Propulsion (NTP) Work? The most powerful nuclear rocket engine ever tested (Phoebus 2a) is shown during a high-power test. The reactor operated for about 32 minutes, 12 minutes at power levels of more than 4.0 million kilowatts. Why is NTP Attractive for Human Missions to Mars?
Overall Nuclear Thermal Propulsion Strategy: Develop a subscale nuclear engine that demonstrates a viable NTP propulsion system and is scalable to the Mars mission engine needs.
NASA Announces Nuclear Thermal Propulsion Reactor Concept …
2021年7月13日 · The government team has selected three reactor design concept proposals for a nuclear thermal propulsion system. The reactor is a critical component of a nuclear thermal engine, which would utilize high-assay low-enriched uranium fuel.
6 Things You Should Know About Nuclear Thermal Propulsion
2021年12月10日 · Nuclear thermal propulsion (NTP) systems aren’t new, but they could significantly reduce travel times and carry greater payloads than today’s top chemical rockets — giving humans a great chance of exploring deep space.
Multiphysics and multi-scale design and analysis of nuclear thermal ...
2024年7月1日 · Due to the advantages of high thrust and high specific impulse, nuclear thermal propulsion (NTP) is a preferred near-term rocket engine technology for future Mars missions. This article introduces the reactor design based on spherical cermet fuel element, with the aim of studying the feasibility of applying this new fuel in NTP system.
Nuclear Thermal Propulsion Reactor Materials - IntechOpen
2020年3月10日 · Space nuclear reactors rely on nuclear fuels that include a range of fissionable compounds. Uranium oxide (UO 2), uranium nitride (UN), uranium carbide (UC and UC 2), and uranium oxycarbide (UCO) are ceramic materials that have been studied by various space reactor technology development activities.
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