22 N HPGP Thruster - ECAPS - SmallSat Catalog - Orbital Transports

22 N HPGP Thruster

The 22 N High Performance Green Monopropellant (HPGP) thruster enables high thrust apogee, reaction control and proximity operations maneuvering medium-large spacecraft and kick stages.

The 22 N HPGP Thruster also enables high thrust delta-V maneuvers and AOCS for small-medium class spacecraft and reaction control for large spacecraft.

The thruster operates on LMP-103S low-toxicity monopropellant with 1.3C the density-Isp of hydrazine. Additionally, LMP-103S offers up to 72% cheaper spacecraft loading as compared to hydrazine, reducing the total life-cycle cost of the mission.

The propellant is long term storable (>15 years) and enables "fuel at the factory" for rapid response satelliltes. Over 31 satellites are presently flying HPGP technology (as of 2024).

Mechanical Interface:

Specifications
Thrust Range:
5.5 to 22 N
Propellant:
LMP-103S
Mass:
1.0 Kg
Length:
260 mm
Flow Control Valve Type:
Solenoid
Pull-in Voltage:
28 (+/- 4) VDC
Holding Voltage:
10 (+/- 1) VDC
Nominal Reactor Pre-heating Voltage:
28 VDC
Regulated Reactor Pre-heating Power:
36 to 50 W
Minimum Impulse Bit:
< 0.44 Ns
Pulses:
50,000 (qualification level)
Propellant Throughput:
150 kg (qualification level)
Longest Continuous Firing Time:
45 mins (qualification level)
Accumulated Firing Time:
3 hrs (qualification level)
Firing Sequences:
282 (qualification level)
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