NASA Lucy Mission .
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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 Westcott Liquid Engine LEROS1C

LEROS 1c Apogee Engine

The LEROS 1c is a high performance bipropellant chemical thruster.

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 Westcott Liquid Engine LEROS1C

The Nammo Space designed and manufactured 324 second Isp, MON/ Hydrazine dual mode apogee engine delivers a thrust of 458N.  This engine has been sold in large numbers (with more than 60 engines delivered) and is the most successful dual mode apogee engine supplied.

The LEROS 1c has been used for both interplanetary and Earth orbit missions. The LEROS 1c is renowned for its reliability and high performance. It is the first choice for satellite primes throughout the world and is very price competitive.  The base material for the thrust chamber and expansion cone is C103 Niobium alloy, coated with R512E Disilicide for oxidation protection.

All Nammo apogee engines are hot-fire tested in the UK National Space Propulsion Test Facility at Nammo Westcott.  Delivery timescales are typically under 12 to 18 months.

Performance Characteristics

  • Typical Application Apogee or Main delta V engine
  • Typical Operational Mode Long duration burns
  • Propellant MON/Hydrazine
  • Thrust Range 386 N to 470 N
    87 lbf to 106 lbf
  • Thrust 458 N at nominal inlet pressure
    103 lbf at nominal inlet pressure
  • Mixture Ratio Range 0.78 to 0.89
    Oxidiser to Fuel
  • Mixture Ratio 0.85
    At nominal inlet pressure
  • Specific Impulse 324 seconds
    Minimum value
  • Total Impulse 13,200,000 Ns
  • Propellant Throughput 4,760 kg
    10,494 lb
  • Inlet Pressure Range 13 bar to 21 bar
    190 psi to 300 psi
  • Restarts 117 off Demonstrated
    With the chamber temperature starting at 1,300°C [2,372°F]
  • Maximum Duration Single Firing 5,800 seconds
    Performed in orbit
  • Cumulative Duration 40,000 seconds
    Demonstrated
  • Mass 4.3 kg
    9.5 lb
  • Nominal Operating Temperature 1,350°C
    2,462°F
  • Propellant Temperature +10°C to +35°C
    +50°F to +95°F
  • Storage Temperature -53°C to +65°C
    -63.4°F to 149°F
  • Storage Life 4 years
  • Operational Life 19 years
  • Reliability 0.995
  • Valve Type 2 off Solenoid, Single Seat, Redundant Coil
    The valve can be connected fuel/oxidiser primary coils in parallel (28 Vdc nom) or in series (70 Vdc nom)
  • Qualified Valve Cycles 10,500 on/off cycles
  • Valve Voltage 27.5 Vdc to 35.5 Vdc
    Per coil
  • Technology Readiness Level TRL9

Status

The LEROS 1c is qualified and has been delivered to customers for interplanetary and Earth orbital missions.

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