ALPHARD Monopropellant Family
T4i - Technology for Propulsion and Innovation
Family of High Test Peroxide (HTP) monopropellant thrusters (ALPHARD-10, -10-HP, -20, -20-HP, -200) for delta-v and RCS on small satellites, deployers, and orbital transfer vehicles.
Key figurescomparable across the catalogue
- Mass
- 0.332 kg
- Thrust
- 5.3 N
- Specific impulse
- 160 s
- Total impulse
- 56,505 N·s
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
- Propellant (Family Overview)
- HTP 90 w% (customizable up to 95 w%)
- Thrust range [n] - alphard-10
- 5.3 – 12.7 N
- Thrust range [n] - alphard-10-hp
- 5.3 – 19.7 N
- Thrust range [n] - alphard-20
- 10 – 22.6 N
- Thrust range [n] - alphard-20-hp
- 10 – 34 N
- Thrust range [n] - alphard-200
- 100 – 230 N
- Inlet pressure range [bar] - alphard-10
- 10 – 28 bar
- Inlet pressure range [bar] - alphard-10-hp
- 10 – 50
- Inlet pressure range [bar] - alphard-20
- 10 – 28 bar
- Inlet pressure range [bar] - alphard-20-hp
- 10 – 50
- Inlet pressure range [bar] - alphard-200
- 10 – 27
- Meop [bar] - alphard-10
- 28
- Meop [bar] - alphard-10-hp
- 50
- Meop [bar] - alphard-20
- 28
- Meop [bar] - alphard-20-hp
- 50
- Meop [bar] - alphard-200
- 27
- Ss ISP average (vacuum) [s] - alphard-10
- 160
- Ss ISP average (vacuum) [s] - alphard-10-hp
- 160
- Ss ISP average (vacuum) [s] - alphard-20
- 160
- Ss ISP average (vacuum) [s] - alphard-20-hp
- 160
- Ss ISP average (vacuum) [s] - alphard-200
- 160
- Mib range [ns] - alphard-10
- 0.10 – 0.22
- Mib range [ns] - alphard-10-hp
- 0.10 – 0.33
- Mib range [ns] - alphard-20
- 0.15 – 0.34
- Mib range [ns] - alphard-20-hp
- 0.15 – 0.51
- Mib range [ns] - alphard-200
- 6.8 – 25
- Valve type - alphard-10
- Solenoid
- Valve type - alphard-10-hp
- Solenoid
- Valve type - alphard-20
- Solenoid
- Valve type - alphard-20-hp
- Solenoid
- Valve type - alphard-200
- Valve currently not available
- Valve consumption [w] - alphard-10
- 18 Peak / 1.8 Hold
- Valve consumption [w] - alphard-10-hp
- 80 Peak / 8 Hold
- Valve consumption [w] - alphard-20
- 18 Peak / 1.8 Hold
- Valve consumption [w] - alphard-20-hp
- 80 Peak / 8 Hold
- Demonstrated life - pulses - alphard-10
- 4000
- Demonstrated life - pulses - alphard-10-hp
- 4000
- Demonstrated life - pulses - alphard-20
- 4000
- Demonstrated life - pulses - alphard-20-hp
- 4000
- Demonstrated life - pulses - alphard-200
- 1600
- Demonstrated life - total impulse [ns] - alphard-10
- 56505
- Demonstrated life - total impulse [ns] - alphard-10-hp
- 56505
- Demonstrated life - total impulse [ns] - alphard-20
- 113011
- Demonstrated life - total impulse [ns] - alphard-20-hp
- 113011
- Demonstrated life - total impulse [ns] - alphard-200
- 100000
- Demonstrated life - accumulated firing time [s] - alphard-10
- 6000
- Demonstrated life - accumulated firing time [s] - alphard-10-hp
- 6000
- Demonstrated life - accumulated firing time [s] - alphard-20
- 6000
- Demonstrated life - accumulated firing time [s] - alphard-20-hp
- 6000
- Demonstrated life - accumulated firing time [s] - alphard-200
- 500
- Alphard-10 - propellant
- HTP 90 w% (customizable up to 95 w%)
- Alphard-10 - thrust class
- 10 N
- Alphard-10 - operational mode
- Δv+RCS
- Alphard-10 - inlet pressure range
- 10 – 28 bar
- Alphard-10 - meop
- 28 bar
- Alphard-10 - thrust range
- 5.3 – 12.7 N
- Alphard-10 - nozzle expansion ratio
- 60:1 (customizable; scarfed/canted options available)
- Alphard-10 - ss ISP average (vacuum)
- 160 s
- Alphard-10 - mib range (Ns)
- 0.1 – 0.22
- Alphard-10 - overall length
- 170 mm
- Alphard-10 - maximum diameter
- 60 mm
- Alphard-10 - mass
- 0.332 kg
- Alphard-10 - fcv type
- Solenoid
- Alphard-10 - control routine
- Peak & Hold
- Alphard-10 - demonstrated life - pulses
- 4000
- Alphard-10 - demonstrated life - total impulse (Ns)
- 56505.6
- Alphard-10 - demonstrated life - accumulated firing time
- 6000 s
- Alphard-10-hp - propellant
- HTP 90 w% (customizable up to 95 w%)
- Alphard-10-hp - thrust class
- 10 N
- Alphard-10-hp - operational mode
- Δv+RCS
About
The ALPHARD family is a line of monopropellant propulsion thrusters using High Test Peroxide (HTP) at 90 w% concentration (customizable up to 95 w%) as propellant, intended for small satellites, deployers, and orbital transfer vehicles (OTVs). The family covers a range of thrust classes: ALPHARD-10 and ALPHARD-10-HP (10 N class), ALPHARD-20 and ALPHARD-20-HP (20 N class), and ALPHARD-200 (200 N class). All variants operate in Δv+RCS operational mode and share a steady-state average vacuum Isp of 160 s and a 60:1 nozzle expansion ratio, with customizable expansion ratio and optional scarfed and canted nozzle configurations. The 10 N and 20 N variants use solenoid flow control valves operated in a Peak & Hold control routine; standard versions operate at 10-28 bar inlet pressure (28 bar MEOP) while the ‘-HP’ (high pressure) versions operate at 10-50 bar inlet pressure (50 bar MEOP), giving the HP versions a higher maximum thrust and minimum impulse bit (MIB) range. The ALPHARD-200 operates at 10-27 bar inlet pressure (27 bar MEOP) and produces 100-230 N thrust, though its flow control valve is not currently available. Thruster masses range from 0.332 kg (ALPHARD-10/-10-HP) to 1.2 kg (ALPHARD-200, without FCV), with overall lengths from 170 mm to 280 mm and maximum diameters from 60 mm to 90 mm. All variants have demonstrated life testing: the 10 N and 20 N variants have demonstrated 4000 pulses and 6000 s of accumulated firing time, while the ALPHARD-200 has demonstrated 1600 pulses and 500 s of accumulated firing time. Total impulse demonstrated ranges from 56,505.6 Ns (10 N variants) to 113,011.2 Ns (20 N variants) and 100,000 Ns (ALPHARD-200).
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.