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Appendices
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Appendix A Summary of Space Station Furnace Facility Core Systems Science Requirements
Minimum volume
3 racks
Total facility peak power
12 kW
Heat rejection
as required to dissipate energy used
Video
National Television Standards Committee standards; upgradable
Magnetic field generation
3.0 kW power available
Field stability
&x156; 1.0% of desired field
Inert gas requirements per increment mission
SSFF provided inert gas
8.16 kg 99.9995% pure argon
ISS provided nitrogen
11.34 kg 99.995% pure
Control
Range
10–200 kPa
Minimum flow rate
4 kg argon/hr
Measurement
Range
5–250 kPa
Resolution
0.1 kPa
Vacuum (access provided to ISS system)
Range
1×10-6-5 kPa
Absolute accuracy
10.0% of measured value
Heating rate
60 to 300°C/hr
Cooling requirements
active or passive
Heater element control
Control set-point stability
±0.1°C
Absolute control set-point accuracy
±1.0°C
Number of controlled heaters
45 total: 15 in IR1, 30 in IR2
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Temperature measurement
Range
20.0–2,300.0°C
Resolution
0.1°C
Absolute accuracy
±0.9°C
Data rate
10 scans/s
Translation capability
Rate range
0.005 to 500.0 cm/hr
Control range
60.0 cm
Rate stability
< 5.0 of set-point at lowest rate to < 2.0% of set-point at highest rate
Rate stability rate
< 1.0 mm/s2
Translation rate measurement
Absolute accuracy
±2.5% of set-point at fastest rate,
±10.0% of set-point at slowest rate
Resolution
2.0% of set-point
Sampling rate
up to 1 scan/s
Sample position measurement
Absolute accuracy
±1.1% of provided signal
Resolution
0.1 mm
Current pulsing
Pulse amplitude
5.0 to 60.0A; selectable
Accuracy
±0.5% of setting at 5 A
±0.25% of setting at 60 A
Resolution
1.0 A
Pulse width
10–4,000 ms
Accuracy
±5.0% of setting
Resolution
1.0 ms
Pulse shape
variable
Transition time
&x156;5.0% of pulse width
Minimum time between pulses
250 ms
Pulse power
Peak
1,600 W
Time averaged
640 W (40% duty cycle)
Pulse voltage
up to 60 V at core/module interface
Pulse polarity
reversible
Voltage and current input measurements
Accuracy
±0.1 V and ±0.1 A
Representative terms from entire chapter:
rate stability
