Statistics – Applications
Scientific paper
Jan 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..969..326c&link_type=abstract
SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM-STAIF 2008: 12th Conference on Thermophysics Applications in Microgravity;
Statistics
Applications
Fission Reactor Types, Lunar, Planetary, And Deep-Space Probes, Servo And Control Equipment, Robots, Reactor Control Systems
Scientific paper
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's 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 fast-spectrum, gas-cooled reactor. For each control scheme, the dimensions and composition of the core are constant, and the reflector is sized to provide $5 of cold-clean excess reactivity with each configuration in its most reactive state. The advantages and disadvantages of each configuration are discussed, along with optimization techniques and novel geometric approaches for each scheme.
Craft Aaron E.
King Jeffrey C.
No associations
LandOfFree
Reactivity Control Schemes for Fast Spectrum Space Nuclear Reactors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Reactivity Control Schemes for Fast Spectrum Space Nuclear Reactors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reactivity Control Schemes for Fast Spectrum Space Nuclear Reactors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1592169