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SPACE TEST FACILITY 1 (STF-1)
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1.4 m diameter spherical test section
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4 x Sumitomo cryopumps
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1 x Shimadzu TMP-V2304LM turbopump
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10^-7 Torr base pressure
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35 kL/s N2, 17 kL/s Xe, 26 kL/s Kr, 100 kL/s H2O
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Water-cooled graphite beam dump
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Inverted pendulum thrust stand (100uN - 1N)
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Motorized translation stage
SPACE TEST FACILITY 2 (STF-2)
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1.5 m x 2.5 m stainless steel chamber
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2 x custom cryosail pumps
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1 x Varian V-550 turbopump
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10^-8 Torr base pressure
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70 kL/s N2, 50 kL/s Xe, 60 kL/s Kr
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-80 C graphite-lined cooling shroud + beam dump
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Inverted pendulum thrust stand (100uN - 1N)
SPACE TEST FACILITY 3 (STF-3)
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0.9 m x 1.5 m stainless steel chamber
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1 x Osaka TG1113 turbopump
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10^-7 base pressure
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2,100 L/s pumping speed (N2)
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Inverted pendulum thrust stand for steady (100uN - 1N) and pulsed (100uN-s - 1N-s) measurements
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High-voltage pulsed-power feedthrough
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Burst-mode thrust measurement capabilities
DIELECTRIC VACUUM FACILITY
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0.8 m x 1.2 m Rotosil quartz chamber
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1 x Osaka TG1113 turbopump
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10^-7 base pressure
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2,100 L/s pumping speed (N2)
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End-on optical and probe access
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Multigas injection system
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Multiple high-precision mass flow controllers
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