LEROS 1c Apogee Engine
NASA Lucy Mission.
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.
Typical Application
Apogee or Main delta V engine
Typical Operational Mode
Long duration burns
Propellant
MON/Hydrazine
Thrust Range
87 lbf to 106 lbf
Thrust
103 lbf at nominal inlet pressure
Mixture Ratio Range
Oxidiser to Fuel
Mixture Ratio
At nominal inlet pressure
Specific Impulse
Minimum value
Total Impulse
13,200,000 Ns
Propellant Throughput
10,494 lb
Inlet Pressure Range
190 psi to 300 psi
Restarts
With the chamber temperature starting at 1,300°C [2,372°F]
Maximum Duration Single Firing
Performed in orbit
Cumulative Duration
Demonstrated
Mass
9.5 lb
Nominal Operating Temperature
2,462°F
Propellant Temperature
+50°F to +95°F
Storage Temperature
-63.4°F to 149°F
Storage Life
4 years
Operational Life
19 years
Reliability
0.995
Valve Type
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
Per coil
Technology Readiness Level
TRL9
Status
The LEROS 1c is qualified and has been delivered to customers for interplanetary and Earth orbital missions.
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
