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
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

QUALTIY

  • Certified to AS9100
  • Focused on customer needs
Location

Nammo [UK] Westcott Westcott, England, HP18 0XB, United Kingdom

MHT-1N Monopropellant Hydrazine Thruster

This high performance European 1N class Hydrazine monopropellant thruster has been developed and extensively proven by Nammo UK.

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

QUALTIY

  • Certified to AS9100
  • Focused on customer needs
Location

Nammo [UK] Westcott Westcott, England, HP18 0XB, United Kingdom

The MHT-1N has class leading performance with an Isp of 228 seconds at its maximum thrust of 1.38 N.

This 1 N class thruster can meet stringent customer requirements including demanding minimum iBit and constantly changing variable duty cycles. The MHT-1N demonstrates excellent iBit repeatability when presented with challenging off-nominal inlet conditions.  The MHT-1N features a unique catalyst management capability that has been developed to help mitigate against the effects of catalyst degradation through life.

The thruster has been designed to enable rapid thermal conditioning of the catalyst bed, which is essential for extended life capability.  The thruster had its first flight on the SSTL Telesat LEO-1 satellite in January 2018. The MHT-1N has been Qualified for ESA NeoSat telecoms platforms, with further qualification campaigns taking place in 2021.

The thruster can be delivered within 12 months (nominal) of order.

Performance Characteristics

  • Nominal Thrust 1.38 N at 24 bara
    0.31 lbf at 348 psia
  • Specific Impulse 228 s at 1.38 N
    >228 s at 0.31 lbf
  • Minimum Impulse Bit 0.035 Ns, demonstrated at 24 bara
  • Thrust Repeatability ±5% thruster to thruster
  • Shortest On Time (Ton) 15 ms
    Demonstrated
  • Mass < 0.45 kg
    < 1 lb
  • Inlet Filtration 25 µm absolute
  • Flow Control Valve Dual in-line, series redundant solenoid valve
  • Valve Power 3.5 W to 4.1 W at 28 Vdc
    20°C [68°F], per coil
  • Pull-In Voltage < 23 Vdc nominal
  • Drop-Out Voltage > 1.5 Vdc
  • Valve Response < 10 ms at 20°C
    Opening and Closing
  • Catalyst Bed Heater Power 5.5 W to 6 W
    Per element at 28 Vdc
  • Valve/TCA Joint Bolted with EPDM seal
  • Hydrazine Throughput 19.19 kg Hydrazine from ESA qualification tests
    42.3 lb
  • Hydrazine Throughput > 42 kg Hydrazine demonstrated
    92.6 lb Hydrazine demonstrated
  • Total Impulse 36,849 Ns from ESA qualification tests
  • Pulse Capability 88,404 from ESA qualification tests
  • Number of Cold Starts 2
    from ESA qualification tests, with catalyst bed between 5°C [41°F] and 10°C [50°F]
  • Hot Propellant Testing 40,260 pulses
    with propellant temperature between 60°C [140°F] to 67°C [152.6°F]
  • Pad Pressure Venting Pad pressure venting demonstrated
    in blowdown mode
  • Helium Ingestion Test Helium Ingestion tested, with satisfactory performance
  • Spacecraft Passivation 46 grams of GHe vented
    1.6 oz. vented through the thruster in blowdown mode
  • Technology Readiness Level TRL9
    Telesat LEO-1

Status

The MHT-1N thruster has flown on the SSTL TeleSAT LEO-1 platform.  In addition the MHT-1N is currently going through an ESA qualification campaign.