EXA (Astro-und Feinwerktechnik)

Updated 16 Jul 2026
Manufacturer Germany Listed
21 Products
5 Services
33 Years Active
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About EXA (Astro-und Feinwerktechnik)

Astro- und Feinwerktechnik Adlershof GmbH (ASTROFEIN) is a German aerospace manufacturer based in Berlin-Adlershof, officially launched on 12 October 1993 as a spin-off from the German Aerospace Center (DLR). Starting as a five-person precision engineering company, ASTROFEIN has grown into a recognized, certified (DIN EN ISO 9001:2015 and DIN EN 9100:2018) supplier of space components and systems, now employing around 85 people across engineering, manufacturing, and quality assurance.

The company's product portfolio centers on actuators for small-satellite attitude and orbit control systems (AOCS) — including a wide range of reaction wheels from the RW1 up to the RW6000 — as well as ejection mechanisms for CubeSats under the ASTROFEIN PicoSatellite Launcher (PSL) product line, available from PSL1U up to PSL16U. ASTROFEIN is considered one of the world market leaders in reaction wheels and has been described by a customer as "the Ferrari among deployers" for its patented modular launcher design.

Beyond actuators and deployers, ASTROFEIN develops additional AOCS components such as gyro systems, GPS receivers, and magnetometers, along with the ASTROFEIN ACS Test Stand for attitude control system testing and qualification of small satellites and microsatellite buses. The company offers full in-house capability across engineering, manufacturing, and environmental simulation/qualification testing, and has contributed system integration work to missions such as TET and BIROS.

ASTROFEIN's customers and partners include Airbus, DLR, OHB, Jena-Optronik, Spaceflight Inc., and Nanoracks, reflecting its position as an established supplier within the European and international small-satellite supply chain.

Products

21

The ASTROFEIN ACM Magnetometer is a high-precision, space-qualified magnetometer designed for attitude control in small and larger satellites, offering an optimal balance of low mass, size, data quality, and power consumption.

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The ASTROFEIN ACS Test Bed is a comprehensive test stand for verifying the attitude control systems of mini and microsatellites, offering end-to-end testing capabilities including magnetic field, sun, GNSS, and star simulations.

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ARGO-L1 is a configurable, redundant GPS receiver unit designed for LEO missions, offering improved solution availability through a dual independent passive receive antenna system.

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The ASTROFEIN Gyro System AGS-1 is a tri-axial rotation measurement system designed for small satellites, offering temperature-compensated data and low power consumption.

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Flight-proven

The ASTROFEIN PicoSatellite Launcher (PSL) series offers deployers for 1U, 2U, and 3U CubeSats, featuring a flight-proven non-explosive lock and release mechanism.

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The MicroCMG is a Control Moment Gyroscope designed for small satellites, providing attitude control with high angular momentum and torque capabilities.

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Flight-proven

The ASTROFEIN PSL12U and PSL12U XL are flight-proven CubeSat deployers designed for 1U to 12U CubeSats and combinations, featuring non-explosive lock and release mechanisms and very low power consumption.

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The ASTROFEIN PSL6U and PSL6U XL are CubeSat deployers designed for 1U, 2U, 3U, or 6U CubeSats, featuring non-explosive mechanisms and a user-friendly, resettable system.

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The RW1 is a reaction wheel designed for small satellites, featuring separate wheel drive electronics and available with two different rotating masses (Type A or Type B) to provide precise attitude control.

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The RW100 is a reaction wheel for small satellites, optimized for constellation applications and based on the RW90 design.

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The RW150 is a reaction wheel designed for small satellites, featuring integrated wheel drive electronics, various operation modes, and high torque and speed stability.

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The RW1500 is a reaction wheel currently under development, designed for satellite attitude control with an angular momentum of 25.0 Nms and a nominal rotation speed of 4000 rpm.

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The RW25 is a compact reaction wheel designed for nano-satellite applications, featuring integrated electronics for independent operation via a digital interface.

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The RW250 is a reaction wheel for small satellites, featuring integrated wheel drive electronics, various operation modes, and extensive housekeeping data.

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The RW3000 is a reaction wheel designed for satellite attitude control, currently under development. It offers an angular momentum of 50 Nms and a nominal reaction torque of 0.2 Nm.

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The RW35 is a reaction wheel designed for small satellites, featuring integrated drive electronics, high torque and speed stability, and extensive housekeeping capabilities.

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The RW6000 is a large reaction wheel currently under development by ASTROFEIN, designed for satellite attitude control with high angular momentum and reaction torque capabilities.

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The RW800 is a reaction wheel for satellites, currently under development with an engineering model available, designed for attitude control.

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The RW90 is a reaction wheel designed for small satellites, featuring integrated drive electronics, multiple operation modes, and high torque and speed stability.

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The RWT250 is a reaction wheel designed for small satellites, featuring integrated wheel drive electronics, various operation modes, and extensive housekeeping data.

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The RWT150 is an upscaled reaction wheel for small satellites, currently under development, designed to provide attitude control with a nominal angular momentum of 1.0 Nms.

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Additional Services

5
Engineering & analysis
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Aerospace Engineering Services

ASTROFEIN offers a wide range of engineering services for aerospace projects, covering design, system, software, electrical, thermal, and structural aspects. Their experienced team advises on processes, methods, and tool usage throughout the project lifecycle. They specialize in space engineering for…

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Design Engineering

ASTROFEIN's Design Engineering focuses on space components for satellites, probes, and landers. Their engineers develop and design parts, components, and devices for industry and research, from prototype development to flight patterns. They are proficient in calculating static and dynamic strengths…

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Software Engineering

ASTROFEIN's software team is responsible for developing firmware for the embedded systems within their products. This includes programming microcontrollers and FPGAs for electronic components, as well as developing support tools. Their experienced engineers create concepts and specifications in close cooperation…

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System Engineering

ASTROFEIN's system engineers are responsible for the technical coordination of the development of satellite components and subsystems, with a particular focus on attitude control, structure, and mechanisms. They manage the entire development cycle, from defining requirements and overseeing the design…

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Thermal and Structure Engineering

ASTROFEIN's specialists in finite element method (FEM) and FEM structural analysis simulate and test various physical relationships. Their focus includes complex calculations such as linear statics, non-linear analysis, dynamic frequency and natural frequency analysis, harmonic analysis, and PSD analysis. Thermal…

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