Surface Power – PDR John Dankanich (2-13-01)
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Transcript of Surface Power – PDR John Dankanich (2-13-01)
Surface Power – PDRJohn Dankanich (2-13-01)
Dispersion Fueled 100 kWe Reactor
System Dimensions
Assumed 500 M from Routine Activity
Mass BreakdownSubsystem Weight Breakdown
0
200
400
600
800
1000
1200
Heat Pipes Pow er Control Radiator Reactor Shield Structure TE Converter ThermalInsulation
Wire
We
igh
t (K
g)
Total Mass is Approximately 3,000 Kg.
Cost Analysis
Cost of Complete System: $750 Million
• Development
• Production
• Testing
Each additional unit $250 Million
• High Cost due to testing
Risk Assessment
Radiation: Over 500m Distance for routine crew activity
Radiation below acceptable occupational dosage
Failure: Single Failure Modes are Difficult to Eliminate
History - 3 Nuclear Incidents in 19 US missions
Transit-5BN-3, Nimbus, Apollo 13
Snap-10A Reactor Failure
Terrestrial Plant 1/17000 Reactor Years
Comparisons
Existing Space Power
• Heavier, Lower Shielding
Terrestrial
• Lighter, Smaller, Passive
DRM
• Lighter, Lower Power
Dr. Zubrin
• Comparable Mass, Comparable Power
Bottom Line
• Cost of $750 Million ($250 Million per additional unit)
• Reliability of 0.95 (0.98 after prototype)
• Power Output 100 kWe (115 capable)
• Lifetime of 5 years (7 max)
• Mass of 3 Tonnes
• Footprint of 13 m2