BACKED BY FLIGHT HERITAGE AND CURRENTLY ON ORBIT

Satellite Engine

Industry-leading, flight-proven electric propulsion systems for constellations

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Engine Specifications

Xenon and Krypton electric propulsion system with a magnetically shielded thruster and best-in-class performance for spacecraft with less than 1 kW of power.

Xe or Kr

PROPELLANT

400 W

INPUT POWER

~25 mN

THRUST (XE)

~18 mN

THRUST (KR)

~1,400 s

SPECIFIC IMPULSE (XE)

~1,300 s

SPECIFIC IMPULSE (KR)

300 kN-s

TOTAL IMPULSE (XE)

300 kN-s

TOTAL IMPULSE (KR)

System Overview

Mechanical assembly featuring a dark cylindrical tank mounted horizontally beneath a metal base plate with attached fittings and connectors.

Compact Thruster

Instant-start, heaterless, center-mounted cathode and permanent magnet design deliver high thrust and high Isp in a compact design which has been ground tested to 12,000 operational cycles.

Technical illustration of a cylindrical tank mounted below a flat metal plate with attached mechanical and hydraulic components.

Radiation Hardened Power Processing Unit

The Power Processing Unit (PPU) is radiation hardened by design, replacing many microprocessors with simple and reliable components – creating a single circuit board design that is 95% efficient. Increased radiation hardening extends system lifetimes and supports a broad range of LEO and GEO missions.

3D rendering of a black mechanical assembly featuring a cylindrical tank secured by straps beneath a mounting plate with attached pipes and connectors.

Feed System with Heritage

Compact, bang-bang feed system with flight-proven components. Each system is leak and vibration tested in an integrated system test to ensure on orbit reliability.

Mechanical assembly with a cylindrical tank mounted on a black metal frame featuring attached pipes and valves.

Flight-Proven Propellant Tank

Flight-proven, off-the-shelf propellant tanks meet a broad range of mission requirements without the high cost or long lead times of custom tanks. Tanks are sized specifically to fit the unique requirements of each customer mission with flight-proven COPV construction rated to 4,000 psi.

Multi-Thruster Mission Configurations

Multi-thruster Astra satellite engine configurations scale to meet your mission requirements. Select the number of thrusters for your delta-v requirement and we'll help you pair with a tank that meets your total impulse needs.

2-STRING

Metallic spacecraft engine mounted on a black panel with two cylindrical thrusters and connected pipes.

Input Power

800 W

Thrust

~50 mN = 25 mN x 2 (Xe)

~36 mN = 18 mN x 2 (Kr)

Total Impulse

600 kN-s (Xe)

600 kN-s (Kr)

3-STRING

3D rendering of a spacecraft engine component with three cylindrical thrusters mounted on a rectangular panel connected by metal pipes.

Input Power

1,200 W

Thrust

~75 mN = 25 mN x 3 (Xe)

~54 mN = 18 mN x 3 (Kr)

Total Impulse

900 kN-s (Xe)

900 kN-s (Kr)

4-STRING

Black rectangular panel with four cylindrical metallic components connected by small metallic pipes and fittings.

Input Power

1,600 W

Thrust

~100 mN = 25 mN x 4 (Xe)

~72 mN = 18 mN x 4 (Kr)

Total Impulse

1,200 kN-s (Xe)

1,200 kN-s (Kr)