Several different reactivity control schemes are considered for future space nuclear reactor power systems. Each of these control schemes uses a combination of boron carbide absorbers and/or beryllium oxide reflectors to achieve sufficient reactivity swing to keep the reactor subcritical during launch and to provide sufficient excess reactivity to operate the reactor over its expected 7-15 year lifetime. The size and shape of the control system directly impacts the size and mass of the space reactor\u27s reflector and shadow shield, leading to a tradeoff between reactivity swing and total system mass. This paper presents a trade study of drum, shutter, and petal control schemes based on reactivity swing and mass effects for a representative...
Typescript (photocopy).Renewed interest in space nuclear applications over the past several years ha...
International audienceCEA is largely involved in the study of GEN-IV Sodium Fast Reactors (SFR). Som...
Graduation date: 2016An enabling technology for long duration, deep space missions is the availabili...
Reflector based poison drum control on equal size reactor cores fueled with U-233 and U-23
Currently, the main reactivity control methods for small modular reactors (SMR) use control rods as ...
International audienceIn sodium fast reactors, the control rods, a movable cluster of open pins with...
The presented paper is related to the design methods and neutronic characterization of the reactivit...
Reactivity effects caused by radial power flattening in gas cooled, fast-spectrum reacto
Several fast-spectrum space power reactor concepts that use boron carbide control devices were exami...
Power limitation represents a major issue within space applications aimed to human settlements on s...
The suitability of borated reflector drums has been investigated and shown as a control mechanism fo...
Launching mass into space is very expensive, and minimization of the mass of space-bound components ...
The use of fission energy in space power and propulsion systems offers considerable advantages over ...
Performance prediction for fast reactor with axially moving reflector control syste
Reactivity control of fast nuclear reactors containing yttrium hydride moderating zone
Typescript (photocopy).Renewed interest in space nuclear applications over the past several years ha...
International audienceCEA is largely involved in the study of GEN-IV Sodium Fast Reactors (SFR). Som...
Graduation date: 2016An enabling technology for long duration, deep space missions is the availabili...
Reflector based poison drum control on equal size reactor cores fueled with U-233 and U-23
Currently, the main reactivity control methods for small modular reactors (SMR) use control rods as ...
International audienceIn sodium fast reactors, the control rods, a movable cluster of open pins with...
The presented paper is related to the design methods and neutronic characterization of the reactivit...
Reactivity effects caused by radial power flattening in gas cooled, fast-spectrum reacto
Several fast-spectrum space power reactor concepts that use boron carbide control devices were exami...
Power limitation represents a major issue within space applications aimed to human settlements on s...
The suitability of borated reflector drums has been investigated and shown as a control mechanism fo...
Launching mass into space is very expensive, and minimization of the mass of space-bound components ...
The use of fission energy in space power and propulsion systems offers considerable advantages over ...
Performance prediction for fast reactor with axially moving reflector control syste
Reactivity control of fast nuclear reactors containing yttrium hydride moderating zone
Typescript (photocopy).Renewed interest in space nuclear applications over the past several years ha...
International audienceCEA is largely involved in the study of GEN-IV Sodium Fast Reactors (SFR). Som...
Graduation date: 2016An enabling technology for long duration, deep space missions is the availabili...