HARDWARE / PRODUCTAdded 25 Aug 2026

BGT-X5 Green Monopropellant Thruster

Busek Co.
BGT-X5 Green Monopropellant Thruster

Busek's Green Monopropellant Thrusters feature a patented monolithic catalyst that is efficient yet extremely robust, with available thruster sizes ranging from 0.1N to 22N class.

Key figurescomparable across the catalogue

Power
20 W
Thrust
0.5 N
Specific impulse
220 s
Total impulse
565 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

System Power
20 W
Input Voltage
6-16 VDC (nominal 12 V)
Interface
RS-422
Propellant
ASCENT
Thrust
500 mN nominal
Specific Impulse
220-225s
Total Impulse
565 N-s

About

Busek develops leading edge propulsion to enable a new class of spacecraft missions with its Green Monopropellant Thrusters. These thrusters feature a patented monolithic catalyst that is efficient yet extremely robust. Available thruster sizes range from 0.1N to 22N class, with demonstrated vacuum specific impulse >230 sec. The default green monopropellant of choice is ASCENT propellant, which has 10% higher specific impulse and 45% greater density than hydrazine, a highly toxic monopropellant. Replacing hydrazine with ASCENT translates to a smaller wet mass and volume for a given mission. The stable propellant reduces transportation costs and ground handling time. Busek’s 0.5N BGT-X5 system features a novel post-launch pressurization system, allowing for unpressurized integration and launch. Rechargeable pressurization on-orbit allows for consistent performance versus traditional blow-down systems. The system uses a highly stable, ‘green’ propellant (ASCENT), which offers 10% higher specific impulse, and 45% greater density than hydrazine, a highly toxic monopropellant. Replacing hydrazine with ASCENT translates to a smaller, lighter propellant tank and lower wet mass for a given mission. The stable propellant reduces transportation costs and ground handling time, and allows for simplified storage given its lower vapor pressure. Based on system performance, operational responsiveness, size, and safety features, the BGT-X5 is the clear choice among small monopropellant solutions.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: www.busek.com ↗

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