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Facility Fact

The VF–5 cryopumps 3.5 million liters of air per second with its 33.5 sq meter of 12 K helium cryopanels.


C-2000-663: Express integrated test ion propulsion system in the EPL C-1997-3855: Solar receiver for integrated solar upper stage
Facility Capabilities
General EPL Capabilities
  • Vacuum Chambers
    • Two world-class facilities (VF-5, VF-6)
    • Four intermediate facilities (VF-6, VF-8, VF-12, VF-13)
    • Multiple vacuum bell jars.
  • Building Features
    • 50,000 square feet of laboratory and build-up area
    • 340 sq ft of class 1000 Clean Room
    • 15 Experimental Labs
    • Central control room
    • Machine shop
  • Shared Facility Systems
    • LN2 supplied by a 55,000 gallon dewar
    • Cooling tower water augmented with a closed loop cooling water
    • Closed-loop -45°C refrigeration 16 tons
    • Distributed DC Power for EP Testing
      • 200 KW (2000V, 100 A)
      • 40KW (2000V, 20 A)
      • 500KW (200V, 2500 A)

Vacuum Facility 5 (VF-5)

  • High Power Electric Propulsion System Test Bed
  • Dimensions
    • Overall 4.6m diameter by 18.3m long
    • Access 4m diameter by 9m long
  • Vacuum System
    • World-Class Pumping Speed
    • 3.5 x 10-6 l/s @10-6 torr with cryo system
    • No Load Pressure 1 x 10-7 torr
    • Cryopumps
      • 33.5 m2 of helium panel
      • 750 Watts @ 20 K
      • Pumping Speed: 3,500,000 l/s air@1 X 10-6 torr
      • Temperature Range 6 K to 20 K
    • Diffusion Pumps
      • (20) 32 inch diffusion pumps
      • 250,000 l/s air @1 X 10-6 torr
      • -45°C freon cooled chevron traps
  • Multiple Test Ports
    • 1.8m diameter by 2.4m long
    • (2) 0.9m diameter by 0.9m long
    • 0.3 m diameter by 0.3 m long
  • Automatic, unattended operation controls

Vacuum Facility 6 (VF-6)

  • Large scale thermal vacuum facility for power system testing and high power electric propulsion
  • Dimensions
    • Overall 7.6 m diameter by 21 m long
    • Access 6.7 m diameter by 18.3 m long
  • Vacuum System
    • Pumping speed: 900,000 l/s air @1 x 10-6 torr
    • Base (No Load) Pressure: 5 x 10-7 torr
    • (12) 54 in nude cryopumps
    • (4) 3080-ft3/min root blowers
    • (3) 850-ft3/min mechanical pumps
  • 3 m diameter by 3 m long test port
  • Solar Simulation
    • Specially designed for solar concentrated power
    • Earth Orbit Solar Input (5m target)
    • Mercury Orbit Solar Input (30cm target)
    • One degree subtense angle (World-class)
    • (9) 30 kW Xenon Lamps
    • 10% Uniformity
  • Thermal Simulation
    • LN2 cooled (77deg K) shroud
    • 240-kW thermal rejection
    • 300 m longitudinal shroud
    • 6.6m diameter by 18m long max access
    • Divided into three segments longitudinally
  • Automatic, unattended operation

Vacuum Facility 8 (VF-8)

  • Low Power Electric Propulsion Testbed
  • Dimensions
    • Overall 1.5m diameter by 4.5m long
    • Access 1.3m diameter by 4.3m long
  • Vacuum System
    • Pumping speed: 120,000 l/s air @10-5 torr
    • 4 x 10-7 torr base (no load) pressure
    • (4) 35-inch diameter oil diffusion pumps
    • (1) 3080 ft3/min root blower
    • (2) 300 ft3/min mechanical pump
  • Test Ports
    • End port: 0.9m diameter by 0.8m long
    • Side port: 0.6m diameter by 0.6m long
  • Gaseous Feed Systems
    • Hydrogen, nitrogen, ammonia
  • Automatic, unattended operation

Vacuum Facility 12 (VF-12)

  • Medium to High Power Electrostatic Thruster Testbed
  • Dimensions
    • Overall 3.0m diameter by 9.0m long
    • Access 2.5m diameter by 5.0m long
  • Vacuum System
    • Pumping speed: 1,000,000 l/s air @10-5 torr
    • 8 x 10-8 torr base (no load) pressure
    • Cryopanels 350 W @20K
  • Automatic, unattended operation

Vacuum Facility 13 (VF-13)

  • Pulsed Plasma Thruster Testbed
  • Dimensions
    • Overall 1.5m diameter by 3.5m long
    • Upper 2.75m is removable
  • Vacuum System
    • Pumping speed: 10,500 l/s air at 10-6 torr
    • 4 x 10-7 torr base (no load) pressure
    • 20 in. Cryopump and Turbo Pump
    • Quick turnaround by isolating high vacuum pump system
  • Automatic, unattended operation

Vacuum Facility 67 (VF-67)

  • Stirling Converter Testbed
  • Dimensions
    • Overall 1.0m diameter by 3.0m long
  • Vacuum System
    • Pumping speed: 10,000 l/s air @10-6 torr
    • 9x10-7 torr base (no load) pressure
    • 20-inch Cryopump
  • Automatic, unattended operation
Further Information
Electric Propulsion Laboratory (EPL)
Learn about specialized space simulation chambers
+ View the fact sheet (PDF)

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Last Updated: January 24, 2007