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Diagram of a MMRTG. The multi-mission radioisotope thermoelectric generator (MMRTG) is a type of radioisotope thermoelectric generator (RTG) developed for NASA space missions [1] such as the Mars Science Laboratory (MSL), under the jurisdiction of the United States Department of Energy's Office of Space and Defense Power Systems within the Office of Nuclear Energy.
Space velocity may refer to: Space velocity (astronomy) , the velocity of a star in the galactic coordinate system Space velocity (chemistry) , the relation between volumetric flow rate and reactor volume in a chemical reactor
The continuous stirred-tank reactor (CSTR), also known as vat-or backmix reactor, mixed flow reactor (MFR), or a continuous-flow stirred-tank reactor (CFSTR), is a common model for a chemical reactor in chemical engineering and environmental engineering. A CSTR often refers to a model used to estimate the key unit operation variables when using ...
When in space, the purpose of a propulsion system is to change the velocity, or v, of a spacecraft. [ 7 ] In-space propulsion begins where the upper stage of the launch vehicle leaves off, performing the functions of primary propulsion , reaction control , station keeping , precision pointing , and orbital maneuvering .
Results presented in January 2011 confirmed that the design point for optimal efficiency on the VX-200 is 50 km/s exhaust velocity, or an I sp of 5000 s. The 200 kW VX-200 had executed more than 10,000 engine firings with argon propellant at full power by 2013, demonstrating greater than 70% thruster efficiency relative to RF power input.
[6] [21] NASA is to be responsible for the propulsion system and nuclear reactor, and DARPA is to lead the vehicle and integration requirements, mission concept of operations, nuclear regulatory approvals and launch authority. [6] The U.S. Space Force plans to launch DRACO on either a SpaceX Falcon 9 or a United Launch Alliance Vulcan Centaur.
'Water-Water Energy Reactor Universal [a] Optimized Digital [b] ') is a generation III+ nuclear power reactor based on VVER technology developed by Rosatom. [1] The VVER-TOI design is intended to improve the competitiveness of Russian VVER technology in international markets.
Schematic diagram showing the difference between the Pool and Loop designs of a liquid metal fast breeder reactor. The two main design approaches to sodium-cooled reactors are pool type and loop type. In the pool type, the primary coolant is contained in the main reactor vessel, which therefore includes the reactor core and a heat exchanger.