ESA
Product Picture
Contact

Adam Watts

Strategic and Business Development Manager

MAIL Nammo (UK) Limited, 47 Westcott Venture Park, Westcott, Buckinghamshire, HP18 0XB, United Kingdom.
EMAIL adam.watts@nammo.com
TEL +44 7768 952 290

NAMMO UK WESTCOTT

GENERAL

  • Dedicated, skilled space engineering team
  • Experienced Assembly Integration and Test Team
  • Cleanroom facility for space hardware
  • Electron Beam Welding
  • Experienced orbital and interplanetary propulsion solutions

TEST FACILITIES

  • National Propulsion Test Facility, for thrusters up to 1.5kN
  • High Altitude Propulsion Test Facility
  • Attitude and Reaction Control Testing
  • Small Thruster Test Facility
  • Sea Level Test Facility
  • Vibration and Resonance Testing

QUALITY

  • Certified to AS9100
  • Focused on customer needs
Location

Nammo (UK) Westcott Westcott, England, HP18 0XB, United Kingdom

Datasheet

2021 Nammo Space Electronic Presure Regulator

Electronic Pressure Regulator

This Nammo Space product is being developed for spacecraft propulsion systems where customers require precise pressure regulation or mass flow control.

Product Picture
Contact

Adam Watts

Strategic and Business Development Manager

MAIL Nammo (UK) Limited, 47 Westcott Venture Park, Westcott, Buckinghamshire, HP18 0XB, United Kingdom.
EMAIL adam.watts@nammo.com
TEL +44 7768 952 290

NAMMO UK WESTCOTT

GENERAL

  • Dedicated, skilled space engineering team
  • Experienced Assembly Integration and Test Team
  • Cleanroom facility for space hardware
  • Electron Beam Welding
  • Experienced orbital and interplanetary propulsion solutions

TEST FACILITIES

  • National Propulsion Test Facility, for thrusters up to 1.5kN
  • High Altitude Propulsion Test Facility
  • Attitude and Reaction Control Testing
  • Small Thruster Test Facility
  • Sea Level Test Facility
  • Vibration and Resonance Testing

QUALITY

  • Certified to AS9100
  • Focused on customer needs
Location

Nammo (UK) Westcott Westcott, England, HP18 0XB, United Kingdom

Datasheet

2021 Nammo Space Electronic Presure Regulator

Nammo Space has developed an Electronic Pressure Regulator for spacecraft use.  This state-of-the-art development features the Nammo advanced High Pressure Proportional Valve and includes an integral heater for thermal conditioning of the fluid.

The Electronic Pressure Regulator is primarily designed for electric propulsion with the option of auxiliary cold gas propulsion Xenon and also for chemical propulsion systems to regulate the helium pressurant.  When used in a Xenon or Nitrogen application the EPR requires a propellant heater to avoid two phase flow in the regulator caused by Joule Thompson cooling.

The EPR design uses a heater upstream of the high pressure proportional valve, which heats the gas so that the outlet gas (at LP node) is maintained above 27˚C.  The qualification activities are ongoing at this time for the Electronic Pressure Regulator.

Performance Characteristics

  • Operating Media Xenon, Nitrogen, Helium
  • Inlet Pressure Up to 310 bara
    4,496 psi
  • Pressure Set Point Range 0.5 bar to 22 bar
    7.25 psi to 319 psi
  • Set Point Accuracy, for Xenon < 1% of mass flow set point
  • Proof Pressure 465 bar
    6,744 psi
  • Burst Pressure 775 bar
    11,240 psi
  • Operating Temperature -40°C to +70°C
  • Xenon Mass Flow Rates 0 to 1.2 g/s Xenon, for pressures between 25 bara and 187 bara
    0 to 1.2 g/s Xenon, for pressures between 362.6 psia and 2,712 psia
  • Helium Mass Flow Rates 0 to 0.6 g/s Helium, for pressures between 68 bara and 310 bara
    0 to 0.6 g/s Helium, pressures from 987 psia to 4,496 psia
  • Internal Leakage 2 x 10-5 scc/s GHe
  • External Leakage 1 x 10-6 scc/s GHe
  • System Response Time <1 second, with valve response <10ms
    Depending on volume and inlet pressure
  • Filtration 2 µm
  • Operating Life Cycles 15,000 On/Off cycles
  • Hardware Mass < 2.3 kg
    < 5 lb
  • Envelope 297mm x 225mm x 74mm
  • Single Branch Power < 15 W on standby and pre heated at 200°C for Xenon
  • Single Branch Power 1.4 W on standby for Helium (no heating)
  • Heating Power > 60W available for fluid enthalpy increase
  • Electrical Interface Flying leads or connectors
  • Fluidic Interface Customisable, welded stub tubes or threaded fittings
  • Structural Interface Aluminium baseplate, customisable to customer needs
    Please contact Nammo to discuss your specific needs.
  • Electronic Control Hardware Closed loop electronics required with 200 V valve driver
  • Technology Readiness Level TRL7

Status

The Electronic Pressure Regulator is being developed and qualified together with ESA.

 

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Norway

Nammo AS

MAIL P.O. Box 142, NO-2831 Raufoss, Norway
VISIT Enggata 40, NO-2830 Raufoss, Norway
EMAIL info@nammo.com
TEL +47 61 15 36 00 (0800 - 1500)

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