HARDWARE / PRODUCTUpdated 25 Jul 2026

BGT-X5

Busek Co.
BGT-X5

Busek's BGT-X5 is a 0.5N green monopropellant thruster system delivering 565 N-s of total impulse within a 1U CubeSat volume, using the stable ASCENT propellant as a hydrazine alternative.

Key figurescomparable across the catalogue

Mass
1.5 kg
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

Propellant
ASCENT
Thrust
500 mN nominal
Specific impulse
220-225 s
Total impulse
565 N-s
System power
20 W
Supply voltage
6-16 VDC
Nominal voltage
12 VDC
Interface
RS-485
System mass
1.5 kg BOL

About

The BGT-X5 is a monopropellant thruster system for high performance space applications, producing 0.5N (500 mN nominal) thrust using a highly stable ‘green’ propellant (ASCENT) as an alternative to hydrazine. The thruster features a patented long-life catalyst reactor, a high temperature thruster body, and a low-power piezo microvalve with flight heritage. The system includes a novel propellant tank and a patent-pending Post-Launch Pressurization System (PLPS) that together enable a compact, high-thrust propulsion solution for CubeSats and Smallsats within a 1U volume. The system easily scales by increasing the propellant tank size to support higher total impulse applications, and multiple systems can be integrated onto a single spacecraft for modular attitude control and translational thrust. The ASCENT propellant offers 10% higher specific impulse and 45% greater density than hydrazine, which is highly toxic. Replacing hydrazine with ASCENT results in a smaller, lighter propellant tank and lower wet mass for a given mission. The stable propellant also reduces transportation costs and ground handling time, and allows for simplified storage due to its lower vapor pressure. Based on system performance, operational responsiveness, size, and safety features, the BGT-X5 is positioned as a leading choice among small monopropellant propulsion solutions.

Documentation

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

Source: www.busek.com ↗

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