BET-MAX Electrospray Thruster System
Busek Co.
Multi-axis precision electrospray propulsion system (BET-300P thrusters) for ultra-precise attitude/orbital control down to 1U platforms.
Typed specifications69 values
Discloses 8 of 10 fields engineers filter by in this category (category median 3).
- Propulsion family
- electric datasheet p.1
- Mass
- 166 g BET-300-P Configuration A, thruster wet mass · datasheet p.2 166 g BET-300-P Configuration B, thruster wet mass | 800 g BOL System Mass | 166 g Configuration A, Wet Mass | 166 g Configuration B, Wet Mass +1
- Thrust
- 0.055 mN Configuration A, Nominal Thrust · datasheet p.2 0.055 mN Configuration B, Nominal Thrust | 0.001 mN min · continuous throttled thrust | 0.001 mN min · individual thruster, throttled continuous thrust | 0.15 mN max · BET-300-P Configuration A +8
- Envelope (L×W×H)
- 3U product page 118 cm3 Configuration A, Volume | 118 cm3 Configuration B, Volume
- Specific impulse
- 850 s BET-300-P Configuration A · datasheet p.2 2 300 s BET-300-P Configuration B
- Total impulse
- 92 N·s BET-300-P Configuration A, Demonstrated · datasheet p.2 250 N·s BET-300-P Configuration B, Pending, 50Ns demonstrated to date | 90 N·s individual thruster, ~ | 90 N·s per thruster module
- Propellant
- ionic liquid Configuration A · datasheet p.2 ionic liquid Configuration B | ionic liquid EMI Im
- Supply voltage
- 28 V nom. · customizable · datasheet p.1
- Power consumption
- 0.85 W Configuration A, Nominal Power · datasheet p.2 2.25 W Configuration A, Maximum Power | 24 W Configuration A, System Max Power | 12 W Configuration A, System Nominal Power | 2.5 W Configuration B, Maximum Power +11
- Data interface
- RS-422 PPU/DCIU text, contradicts table · datasheet p.3 RS-485 standard specifications table | RS-422
- Thruster technology
- electrospray (FEEP or colloid) datasheet p.1
- Thrusters in the unit
- 4 BET-300-P thrusters per PPU · datasheet p.2
- Min impulse bit
- 0.002 mN·s Configuration A · datasheet p.2 0.002 mN·s Configuration B | 0.002 mN·s min · BET-300-P Configuration A | 0.002 mN·s min · BET-300-P Configuration B
- Power at thrust
- 0.85 W nom. · BET-300-P Configuration A, per thruster · datasheet p.2 2.25 W max · BET-300-P Configuration A, per thruster | 24 W max · BET-300-P Configuration A, system | 2.5 W max · BET-300-P Configuration B, per thruster | 24 W max · BET-300-P Configuration B, system +3
- Satellite class
- CubeSat platforms as small as 3U · datasheet p.1
- Missions flown
- 1 engineering model thrusters · datasheet p.2
- Power processing unit included
- yes datasheet p.1
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier7 lines, in the manufacturer's own wording
- Thruster module
- BET-300P passively-fed electrospray thruster, 125 cm³
- Thrusters per PPU
- Up to 4
- Thrust range
- < 1 µN to 150 µN, sub-µN resolution
- Impulse per module
- > 100 N·s
- Neutralizer
- Carbon Nanotube Field Emission Cathode (CNTFEC), propellant-less
- Interface
- RS-422 digital control
- Minimum platform size
- 3U
About
Busek’s BET-MAX precision reaction control system provides high-resolution control via electrospray propulsion technology. Up to four 125 cm³ BET-300P thrusters per centralized PPU can be positioned as desired to provide attitude or orbital control on platforms as small as 3U, with throttled continuous thrust from under 1 µN up to 150 µN and sub-µN resolution. Each module includes propellant storage sufficient for over 100 N·s of impulse plus all feed components. Spacecraft charge neutralization uses Busek’s patented, flight-qualified Carbon Nanotube Field Emission Cathode (CNTFEC). Applications include ultra-precise pointing, reaction wheel desaturation, formation flight, LEO drag compensation, and precision pointing for exoplanet observation and laser communications.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.