Locations
Contacts

Thorstein Korsvold

Web & Content Manager (Corporate Press Contact)

MAIL P.O. Box 142, NO-2831 Raufoss, Norway
VISIT Enggata 37, 2830 Raufoss, Norway
EMAIL thorstein.korsvold@nammo.com
TEL +4741100055

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 - 1530)
ESA - SWARM .
Contact

Nigel Kay

General Manager

MAIL 36 Central Way, Cheltenham Trade Park, Cheltenham, GL51 8LZ, UK
EMAIL nigel.kay@nammo.com
TEL +44 7714 322866

NAMMO CHELTENHAM

GENERAL CAPABILITIES

  • Dedicated, skilled space engineering team
  • Experienced Assembly Integration and Test team
  • Program Management

QUALITY AND INSPECTION

  • Certified to AS9100
  • Inspection department including CMM and optical measuring equipment
  • Laser part marking
  • Complete traceability of inspection records
  • Material traceability from original mill source to final components

CLEANROOM and ENVIRONMENTAL TESTING

  • ISO Class 8 environment, with Class 5 laminar flow booths
  • Large 1m diameter x 2m long Vacuum chamber
  • Thermal vacuum chambers
  • Thrust test facility
  • Vacuum/leak testing and pressure testing.
  • Air borne and liquid Particle measurement.
  • Pressure test facility to 1500 bar
  • Computer controlled TIG and Orbital TIG weld facility
Location

Nammo Cheltenham Unit 36, Enterprise Way, England, GL51 8LZ, United Kingdom

Cold Gas Thruster

This spacecraft thruster has been developed for cold gas propulsion applications requiring a thrust between 10 mN and 100 mN.

Contact

Nigel Kay

General Manager

MAIL 36 Central Way, Cheltenham Trade Park, Cheltenham, GL51 8LZ, UK
EMAIL nigel.kay@nammo.com
TEL +44 7714 322866

NAMMO CHELTENHAM

GENERAL CAPABILITIES

  • Dedicated, skilled space engineering team
  • Experienced Assembly Integration and Test team
  • Program Management

QUALITY AND INSPECTION

  • Certified to AS9100
  • Inspection department including CMM and optical measuring equipment
  • Laser part marking
  • Complete traceability of inspection records
  • Material traceability from original mill source to final components

CLEANROOM and ENVIRONMENTAL TESTING

  • ISO Class 8 environment, with Class 5 laminar flow booths
  • Large 1m diameter x 2m long Vacuum chamber
  • Thermal vacuum chambers
  • Thrust test facility
  • Vacuum/leak testing and pressure testing.
  • Air borne and liquid Particle measurement.
  • Pressure test facility to 1500 bar
  • Computer controlled TIG and Orbital TIG weld facility
Location

Nammo Cheltenham Unit 36, Enterprise Way, England, GL51 8LZ, United Kingdom

Based on the Nammo Space well-established SVS01 range of high performance solenoid valves; the SVT01 series of Cold Gas Thrusters has been in production for over fifteen years.  Across the range, the same solenoid body is used, with the variation in thrust being achieved with an interchangeable nozzle cone at the outlet. This system allows the incorporation of a baffle which protects the elastomeric seal from atomic oxygen attack.

The mono-stable solenoid uses a single coil to energise the movement of a suspended sealing armature.  This assembly is located using a diaphragm spring to eliminate sliding fit issues.  The armature to seat profiles have been designed to minimise flow discontinuities, thereby reducing the susceptibility to contamination induced failures. It also uses a flat faced seal to reduce the risk associated with valve internal leakage due to a high cycle life.

When in the unpowered state, system pressure forces and a spring, work together to keep the armature held in the closed position.  The coil resistance, inlet filter rating, seal material and mechanical interfaces are all adjustable to suit the customer requirements.

Performance Characteristics

  • Operating Media GN2, CF4, GXe
  • Maximum Operating Pressure 1 bar to 2.5 bar
    14.6 psi to 36.2 psi
  • Proof Pressure 17.5 bar
    254 psi
  • Operational Temperature -35°C to +95°C
    -31°F to +203°F
  • Vacuum Thrust 10mN (± 5%) to 100mN (± 5%)
    0.0022 lbf (± 5%) to 0.22 lbf (± 5%)
  • Specific Impulse, GN2 72 seconds [nominal]
  • Specific Impulse, CF4 47 seconds [nominal]
  • Specific Impulse, GXe 30 seconds [nominal]
  • Thrust Vector Accuracy <1°
  • Impulse Bit Repeatability <5%
  • Electrical Interface Flying leads
  • Coil Resistance 110 Ω to 115Ω at 20°C (typical)
    110 Ω to 115Ω at 68°F (typical)
  • Response Time <5.0ms
    Opening and Closing
  • Power Consumption Coil and voltage dependent
    Please contact Nammo to discuss your specific needs.
  • Internal Leakage 1 x 10-4 scc/s GHe max at 1.5 bar
  • External Leakage 1 x 10-6 scc/s GHe max at 1.5 bar
    at End of Life
  • Operating Cycle Life 1,500,000 cycles
  • Filter Rating 25 µm absolute
  • Construction Materials AISI304L, Radiometal 4550, Silicone/EPDM Rubber
  • Hardware Mass 60 gram
  • Envelope 24 x 24 mm flange, 16 mm cylinder OD, 52 mm length
  • Fluidic Interface In-line or right angle threaded AS4395 fitting
    The interfaces can be customised based on the customer needs.
  • Structural Interface Metallic Flange with M4 bolt holes
    The interfaces can be customised based on the customer needs.
  • Mounting 4 off M3 hole on 23 mm PCD
    The interfaces can be customised based on the customer needs.
  • Technology Readiness Level Flight Qualified, TRL9

Status

The thruster has flown on a variety of spacecraft, including: