MONARC Monopropellant Thrusters
Moog Space Defense Group
Moog's MONARC hydrazine monopropellant thruster family covering 1 N to 445 N thrust across six model series, with over 3,000 units delivered to commercial and government satellite programs.
Key figurescomparable across the catalogue
- Thrust
- 0.5 N
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Monarc-1
- Thrust 0.9–1 N; Isp 227–235 s; Mass 0.38 kg
- Monarc-5
- Thrust 4.5–5 N; Isp 226–230 s; Mass 0.49 kg
- Monarc-22-6
- Thrust 22 N; Isp 228–229.5 s; Mass 0.72 kg; 6-in nozzle
- Monarc-22-12 lt/ht
- Thrust 22 N; Isp 227–232 s; Mass 0.69 kg; 12-in nozzle
- Monarc-90 lt
- Thrust 22–90 N; Isp 232 s; Mass 1.12 kg; low-temperature catalyst
- Monarc-90 ht
- Thrust 93–116 N; Isp 232–234 s; Mass 1.12 kg; high-temperature catalyst
- Monarc-445
- Thrust 111–445 N; Isp 234–235 s; Mass 1.6 kg
- Propellant
- Hydrazine (N2H4)
- Feed pressure
- 70–420 psia (model-dependent)
- Units delivered
- 3,000+
- Flight heritage
- Galileo, Sentinel, SMAP, Mars 2020, Jason-CS, MMS, EarthCare, LCROSS, Worldview, Skynet, ExoMars, SWOT, GOES, Landsat-8, Chandra
About
The MONARC (MONopropellant ARCjet-compatible) thruster family is Moog’s flagship monopropellant product line, using hydrazine as propellant with Shell 405/S-405 catalyst beds. The family spans six model groups covering Attitude Control System and main propulsion duties across all satellite sizes. MONARC-1 (1 N) and MONARC-5 (5 N) serve precision ACS applications on small- and medium-class satellites. MONARC-22 (22 N) in 6-in and 12-in nozzle variants covers mid-class ACS and orbit adjust. MONARC-90 in Low Temperature (LT, 22–90 N) and High Temperature (HT, 93–116 N) variants provides orbit raising and station-keeping for LEO constellations and GEO spacecraft. MONARC-445 (111–445 N) is the largest Moog monopropellant thruster, used for main propulsion and orbit maneuvers. All models operate across a feed pressure range of 70–420 psia and are qualified for long mission lives. Specific impulse ranges from 227 to 235 seconds. Over 3,000 MONARC thrusters have been delivered with heritage on Galileo navigation satellites, Sentinel Earth observation, SMAP, Mars 2020 (Perseverance), Jason-CS, MMS, EarthCare, Worldview, and ExoMars.
Documentation
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