Hydrogen-peroxide monopropellant thrusters (5-230 N thrust classes) for small satellites, deployers, and OTVs.
ALPHARD Monopropellant Propulsion Family
Hydrogen-peroxide monopropellant thrusters (5-230 N thrust classes) for small satellites, deployers, and OTVs.
Description
ALPHARD is T4i's family of monopropellant propulsion systems using high-test peroxide (HTP, 90 w%, customizable up to 95 w%) to provide delta-v and reaction control for small satellite missions, deployers, and orbital transfer vehicles. The family covers five variants — ALPHARD-10, ALPHARD-10-HP, ALPHARD-20, ALPHARD-20-HP, and ALPHARD-200 — spanning thrust classes from 10 N to 200 N, with demonstrated life of up to 4,000 pulses and over 56,000 Ns total impulse on the smallest units.
Specifications
| Propellant | HTP (hydrogen peroxide) 90 w%, customizable up to 95 w% |
|---|---|
| Thrust Range | 5.3-12.7 N (ALPHARD-10); 5.3-19.7 N (ALPHARD-10-HP); 10-22.6 N (ALPHARD-20); 10-34 N (ALPHARD-20-HP); 100-230 N (ALPHARD-200) |
| Inlet Pressure Range | 10-28 bar (ALPHARD-10/20); 10-50 bar (HP variants); 10-27 bar (ALPHARD-200) |
| Specific Impulse | 160 s (steady-state average, vacuum, all variants) |
| Minimum Impulse Bit | 0.10-0.22 Ns (ALPHARD-10) up to 6.8-25 Ns (ALPHARD-200) |
| Mass | 0.332 kg (ALPHARD-10 / ALPHARD-10-HP) |
| Dimensions | 170 mm length x 60 mm max diameter (ALPHARD-10 family) |
| Valve Type | Solenoid (ALPHARD-10/20 and HP variants) |
| Demonstrated Life | Up to 4000 pulses, 56505-113011 Ns total impulse, 6000 s accumulated firing time (ALPHARD-10/20 family); 1600 pulses, 100000 Ns, 500 s (ALPHARD-200) |
