Aeronautics & Space
ALCEN is a supplier and/or partner in electronics for the leading aeronautical equipment manufacturers. The Group also has a fine sheet metalwork division and supplies high-end ball bearings.

ALCEN is a supplier and/or partner in electronics for the leading aeronautical equipment manufacturers. The Group also has a fine sheet metalwork division and supplies high-end ball bearings.
Mechanical components
Some of our relevant subsidiaries:
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ADR designs and manufactures high-precision ball bearings in a wide range of sizes (from 1 mm in bore size to 330 mm in outside diameter).
These highly sensitive bearings are found in viewfinders, gyro-stabilized systems, optoelectronic and avionics equipment, infrared pointers, encoders, motors, etc.
As a subsystems developer, ADR develops and offers integrated technical solutions, incorporating a variety of different functions to the bearings.
ADR also designs and produces actuators specifically adapted to highly complex systems.
ADR on ALCEN's website
Defense & Security Mechanical & electronic components
Energy Oil & Gas
Aeronautics & Space Mechanical components
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Bringing together the expertise and means of four ALCEN subsidiaries, ALSYMEX offers its clients solutions and services with high added value:
- Feasibility studies
- Engineering: machining, welding, vacuum
- Detailed design: mechanical engineering, thermo-mechanics, seismicity, vacuum, optics
- Production of high-precision mechanical and optomechanical assemblies: boilerwork, joint welding, machining
- Integration of complex systems in ISO 5 to ISO 8 cleanrooms
- Non-destructive testing
- On-site installation
- Maintenance of mechanical, optomechanical, vacuum and high voltage systems for large scientific instruments and nuclear-capable sites
- Large program management
ALSYMEX operates in the fields of Defense, Energy, Aeronautics and Large Research Infrastructures.
- Website
- Contact
- Location on map
- +33 5 56 13 84 44
ALSYMEX on ALCEN's website
Defense & Security Engineering, Maintenance & Services
Defense & Security Mechanical & electronic components
Energy Nuclear
Energy Engineering, Maintenance & Services
Energy Oil & Gas
Aeronautics & Space Engineering & Maintenance
Aeronautics & Space Mechanical components
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PMB specializes in the assembly of dissimilar materials by vacuum brazing. It makes complex mechanical components for global medical equipment companies. These "metal/metal" or "ceramic/metal" assemblies are integrated into X-ray tubes for scanners, radiotherapy machines or medical implants in the form of hermetic feedthroughs.
It also develops products used in Scientific Research, Defense, Space and Nuclear.
It has a production site in France and a second site in Northern Africa through its subsidiary PMB Tunisia, offering its clients a reliable supply at an optimized cost.
Route des Michels CD56
Lieu dit « La Corneirelle »
13790 Peynier
France- Website
- Contact
- Location on map
- +33 4 42 53 13 13
PMB on ALCEN's website
Aeronautics & Space Mechanical components
Aeronautics & Space Vision & Inspection
Medical & Healthcare Medical machines
Medical & Healthcare Mechanical & electronic components
Actuators
Electromechanical actuators for Aeronautics
ADR designs and manufactures linear and rotating electromechanical actuators that meet the specific needs of controlled positioning, repeatability of movement, power and load capacity.
ADR linear and rotating electromechanical actuators combine high efficiency with a small size and low weight.
ADR relies on this innovative technology to develop optimized solutions for embedded systems and servitude management: emergency actuators, secondary flight control actuators, etc.








High-Precision Ball Bearings
Miniature and annular bearings for enhanced performance
ADR designs and manufactures a wide range of high-precision ball bearings that comply with the most demanding technical specifications and are EN9100 certified.
The materials, liquid or solid lubricants and manufacturing processes are qualified and field proven. The range of ADR's bearings is vast: from 1 to 330 mm and up to ABEC 9 (ISO 2). They guarantee high reliability and resistance in the most restrictive environments: vibration, thermal, climatic, speed, etc.
ADR ball bearings are present in various aeronautical and space equipment and instruments such as valves, pumps, actuators, turbochargers, and more.








Integrated Bearings
Performance and repeatability
ADR designs and manufactures preloaded duplex ball bearings.
ADR bearings guarantee the best compromise of stiffness and friction torque while optimizing the weight, dimensions and cost of the equipment. This specific design uses qualified materials and liquid or solid lubricants and is responsible for the excellent performance and repeatability of behavior of these bearings.
Assembly and final inspections in a clean room ensure a high level of cleanliness and spatial compatibility. ADR integrated bearings are in particular used in satellite mechanisms such as the deployment of solar panels or antennas (SADM), engine orientation, inertia wheels, filter wheels, etc.








Molds for Satellite Antennas
Molds for producing geostationary satellite antennas
For over fifteen years, ALSYMEX has designed and manufactured invar molds with specific deformation profiles used for manufacturing geostationary satellite antenna reflectors.
Based on theoretical data and using specific semi-finished equipment supplied by the client, ALSYMEX manufactures, machines and polishes reflectors with a diameter of up to 3 m within a maximum period of thirty days.

Safety Components
ALSYMEX designs and manufactures a range of effective safety device solutions for propulsion systems:
- Aeronautical non-return valves
- Subsea safety valves
- Tank lids

Tube Fittings
The experience acquired from over 50 years in manufacturing of tube fittings for nuclear applications with a very high level of safety and dependability is what makes ALYNOX able to offer competitive, alternative solutions for Aeronautics & Space applications.
The components manufactured by ALSYMEX, in stainless steel and/or nickel alloy (Inconel), using an innovative hydro-forming technology, have high-performance mechanical properties and enable substantial on-board weight savings.
By way of an example, ALSYMEX produces Inconel fittings installed on the fuel circuit of the A400 M's engines.
ALSYMEX also has a line of ABF three-piece machined fittings, which are removable and have metal-metal sealings (250 bar – 600 °C). Their design can be adapted to any of our clients' needs (SW, BW, threaded, etc.).

Two-Phase Liquid Cooling
ALSYMEX studies and designs cooling systems based on two-phase liquid loops. These upstream theoretical and experimental studies involving two-phase cooling issues have now enabled a global industrial solution to be offered for thermal management of new-generation high heat flow density power electronics (thermal flux).
Thermal transfer components line – DIPHASIK®:
- Fully sealed miniature pump
- Condenser
- Dynamic evaporator
- Fluid (phase change)
- Fully sealed fluid connector

Valves for Space Propulsion
ALSYMEX designs and manufactures a line of flow control valves intended for propulsion subassemblies of satellites engines, with a thrust ranging from 1 to 500 N and either monopropellant or bipropellant.
With a robust and field-proven design, ALSYMEX valves are "Flight Proven" certified. They are primarily used in apogee engines of geostationary satellites (telecom) and in propulsion systems of small satellites in low orbit for altitude control.
Also used in custom space applications from off-the-shelf equipment, ALSYMEX valves are adapted to the most demanding requirements, especially those expressed in launch vehicle applications or scientific space missions.

Ceramic-Metal Assemblies
PMB designs and manufactures customized ceramic-metal components and assemblies. The quality of its production relies on its historical, recognized expertise in the assembly of dissimilar materials by vacuum brazing.
Manufacturing processes cover preparation, machining, surface treatment, controlled atmosphere vacuum brazing and welding.
PMB manufactures ceramic-metal penetrations, kicker chambers, connectors subjected to severe environments and pyrotechnic igniters.

Electronic components
Some of our relevant subsidiaries:
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For over 40 years, TRONICO has specialized in the design and integration of electronic systems for high-added-value equipment, throughout the equipment's life cycle.
In addition to its core business of EMS (Electronic Manufacturing Services), it positions itself as an ODM (Original Design Manufacturer) in the development of complex electronically-dominant systems.
Relying on its experienced R&D team and its various partnerships, TRONICO develops comprehensive systems that incorporate complex physical phenomena and their associated electronics. Over the years, and through its experience, TRONICO has forged strong links with scientific and technological partners that enable the company to research and analyze global and innovative solutions (physical, electronic, mechanical, IT and other principles).
TRONICO is organized into "business units", adapted to the needs of its target markets: Aeronautics, Defense & Security, Energy, Rail, Industrial and Medical. This optimal organization encourages technological, technical and functional synergies between markets.
- Website
- Contact
- Location on map
- +33 2 51 41 91 35
TRONICO on ALCEN's website
Defense & Security Mechanical & electronic components
Energy Engineering, Maintenance & Services
Aeronautics & Space Engineering & Maintenance
Aeronautics & Space Electronic components
Medical & Healthcare Mechanical & electronic components
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At the cutting edge of electronic component technology, TRONICO established a components engineering laboratory in the year 2000 to ensure the reliability of current designs and to come up with the technological solutions of tomorrow.
TRONICO maintains a vast library of programs and has acquired considerable experience in the Medical, Energy, Aeronautics, Defence & Security and Transport sectors.
In 2017, the components engineering laboratory became Tame-Component.
Tame-Component offers the following services:
- Incoming inspection
- Construction analysis
- Component characterization
- Life testing
- Obsolescence management
- Long-term storage
Tame-Component also offers the following solutions:
- Obsolutions
- RoHS
- Qualification
- Up screening
- Reliability
- Failure analysis
Tame-Component on ALCEN's website
Defense & Security Mechanical & electronic components
Energy Engineering, Maintenance & Services
Aeronautics & Space Electronic components
Medical & Healthcare Mechanical & electronic components
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Tame-Power specializes in the management and transmission of electrical energy flows for mobile and stationary applications. Tame-Power, with support from TRONICO and its 45 years of electronic expertise, develops a line of highly reliable long-life power converters combining high efficiency and high power density. The Tame-Power philosophy is to help each of its clients to develop and produce products that meet their needs and their most specific requirements. Each request is studied individually by application engineers.
All DC/DC converters, BMSs and battery emulators sold are designed according to current dependability, safety and testing standards.
Tame-Power on ALCEN's website
Printed Circuit Boards
TRONICO designs and manufactures electronic assemblies and offers a wide range of reliable and durable solutions to optimize manufacturing.
The TRONICO industrialization service facilitates and supports the transition from prototypes to mass production:
- FMECA* Purchasing/Procurement: TRONICO manages risks and obsolescence through FMECA and its market knowledge
- FMECA* Process: TRONICO evaluates and manages production risks through the FMECA process
- DfX:
- DfM (Design for Manufacturing): analysis of manufacturability of PCBs and integrations
- DfT (Design for Test): definition and optimization of testing strategy
- Design to cost: design methodology at objective costs
(* Failure Mode, Effects and Criticality Analysis)

Test Benches
TRONICO designs, integrates and commissions automatic testing equipment for determining the conformity of electronic aeronautical equipment.
Pairing different production tests with a final functional test, TRONICO offers an optimal strategy suited to each electronic product.
Based on test specifications from its design office or its clients', TRONICO defines an architecture, chooses the equipment, defines an ergonomic MMI (Man-Machine Interface), wires the equipment to the interface of the system to be tested (by connectors or bed of nails) and trains operators.
The modularity of TRONICO's benches enables several circuit boards to be tested on the same bench, ensuring that certain economic constraints are respected. Automation of the test sequences, up to the issuance of the report, simplifies and streamlines day-to-day bench use for the operator.

Testing, Storage and Obsolescence Management of Electronic Components
At the cutting edge of electronic component technology, TRONICO has established a components engineering laboratory to ensure the reliability of current designs and to come up with the technological solutions of tomorrow.
TRONICO maintains a vast library of programs and has acquired considerable experience in the Medical, Energy, Aeronautics, Defence & Security and Transport sectors.
TRONICO's components engineering laboratory offers services such as:
- Incoming inspection
- Construction analysis
- Component characterization
- Life testing
- Obsolescence management
- Long-term storage

Energy Converters
TRONICO develops and manufactures high-performance energy converters by combining its expertise (particularly in special flip chip bonding technologies - HEXAT®) with the know-how of the laboratory G2ELab.
TRONICO offers innovative solutions compatible with the challenge of power-density increases necessary for tomorrow's aircraft. From a few watts to tens of kilowatts, TRONICO's expertise covers a wide range of powers for numerous applications.

Vision & Inspection
Some of our relevant subsidiaries:
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With over 30 years of experience, LERITY (formerly LHERITIER) designs and manufactures complex cameras and vision systems, capturing images in the visible spectrum. Thanks to an ambitious policy of research & development, notably in the field of sensors and algorithms for real-time image enhancement, LERITY has reached a level of excellence in image restitution quality, and is today a recognized expert in low light levels.
LERITY is both an OEM for important international actors in optronics & vision systems and an optronics company in itself at the forefront of innovation, notably in active imaging technology via its CAT EYE camera and CAT EYE series of vision systems. LERITY can easily and fluidly adapt itself to the specific needs of its customers: whether they be industrials, security companies or military forces.
Its reputation has notably been established in 3 markets, both in France and internationally:
- Defense & Security: Day channel for vehicle-mounted optronics system, perimeter vision and wide area surveillance, cameras for submarine periscope, day/night coastal surveillance, shooting range metrology, day/night vision cameras with CAT EYE active imaging
- Aeronautics: Head-up display cameras (HUD), taxiway cameras, cargo-monitoring cameras, cockpit cameras (CIRS)…
- Railway: On-board retrovision systems (SNCF), guidance for tramways and buses, camera assistance in automatic driving
- Website
- Contact
- Location on map
- +33 1 34 24 38 20
LERITY on ALCEN's website
Defense & Security Vision, Inspection & Localization
Defense & Security Engineering, Maintenance & Services
Energy Nuclear
Aeronautics & Space Vision & Inspection
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PMB specializes in the assembly of dissimilar materials by vacuum brazing. It makes complex mechanical components for global medical equipment companies. These "metal/metal" or "ceramic/metal" assemblies are integrated into X-ray tubes for scanners, radiotherapy machines or medical implants in the form of hermetic feedthroughs.
It also develops products used in Scientific Research, Defense, Space and Nuclear.
It has a production site in France and a second site in Northern Africa through its subsidiary PMB Tunisia, offering its clients a reliable supply at an optimized cost.
Route des Michels CD56
Lieu dit « La Corneirelle »
13790 Peynier
France- Website
- Contact
- Location on map
- +33 4 42 53 13 13
PMB on ALCEN's website
Aeronautics & Space Mechanical components
Aeronautics & Space Vision & Inspection
Medical & Healthcare Medical machines
Medical & Healthcare Mechanical & electronic components
Ground and On-Board Instrumentation
LERITY designs and manufactures instrumentation periscopes able to be deployed in flight for a high-definition, real-time view of the aircraft equipment while in operation as well as the air flows outside the aircraft.
The observation periscopes have several motorized HD cameras on 3 axes allowing for a close observation of equipment. Images are displayed in real time, on board, for analysis by test engineers and are also transmitted to the ground for recording and interpretation in the testing laboratory.
Qualified for high-altitude test flights, LERITY supplies this aeronautical instrument to aircraft manufacturers.








Head Up Display Camera
LERITY has been designing and manufacturing HUD (Head-Up display) cameras for military aircraft for close to two decades. These cameras enable simultaneous recording of the HUD symbols and the field of vision observed by the pilot.
LERITY develops real-time embedded algorithms for enhanced image dynamics. The HUD cameras are suitable for extreme conditions (blinding light and sunshine, landing, pressurization, temperature, humidity, etc.) for any type of aircraft or helicopter (mission and training with "Replay" function).
LERITY supplies DASSAULT AVIATION (RAFALE, MIRAGE 2000 and MIRAGE F1), BOEING (F-15 of the USAF and F-18 of the US NAVY), HAL (LCA Tejas) as well as trainer aircraft such as the Alpha Jet and the ORLIK PZL-130.
LERITY cameras are RTCA - DO-160 qualified and certified as compliant with standards DO-254 and DO-178.

Non-Destructive X-Ray Testing
PMB produces non-destructive X-Ray testing systems combining a high X-ray energy LINAC (linear particle accelerator) with an imaging and handling system. The performance of these systems relies on the use of computerized tomography techniques that combine X-rays with computers to produce images of the inside of the object being inspected. The PMB systems therefore provide cross-sectional and three-dimensional images of the inspected components. They combine precise detection of faults in complex structures, without altering the properties, with a very simple computer interface.
These non-destructive X-Ray testing systems are used in particular to test components and machines in aeronautics and space. These components are subjected to difficult environments and extreme conditions. They require precise and rigorous inspection in order to identify any internal faults.








Engineering & Maintenance
Some of our relevant subsidiaries:
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ALSEAMAR designs, manufactures and operates naval and underwater products (subsea gliders, unmanned surface vehicles, swimmer delivery vehicles, underwater acoustic positioning equipment, naval radio communication systems, deep-water pure syntactic foam buoyancy products) and is a provider of numerous services (underwater and marine monitoring, inspection, maintenance and upgrade of naval weapon systems, training, and more).
ALSEAMAR's commitment to its customers relies on the high skills and reactivity of its roughly 100 members of personnel, including over 50 engineers and 30 senior technicians, ready to be mobilized for projects around the world.
Main Product Lines
- Subsea and surface robotics
- Radio frequency communications
- Subsea passive acoustics
- Subsea vehicles for divers
- Deep-water syntactic foam buoyancy materials
Main Services
- Life-extension services for orphan and/or aged naval systems
- Marine survey services using subsea gliders and unmanned surface drones
- Localization of aircraft or submarine black boxes in the event of an accident at sea
- Training and instruction
ALSEAMAR on ALCEN's website
Defense & Security Naval & Submarine
Defense & Security Engineering, Maintenance & Services
Energy Oil & Gas
Aeronautics & Space Engineering & Maintenance
-
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Bringing together the expertise and means of four ALCEN subsidiaries, ALSYMEX offers its clients solutions and services with high added value:
- Feasibility studies
- Engineering: machining, welding, vacuum
- Detailed design: mechanical engineering, thermo-mechanics, seismicity, vacuum, optics
- Production of high-precision mechanical and optomechanical assemblies: boilerwork, joint welding, machining
- Integration of complex systems in ISO 5 to ISO 8 cleanrooms
- Non-destructive testing
- On-site installation
- Maintenance of mechanical, optomechanical, vacuum and high voltage systems for large scientific instruments and nuclear-capable sites
- Large program management
ALSYMEX operates in the fields of Defense, Energy, Aeronautics and Large Research Infrastructures.
- Website
- Contact
- Location on map
- +33 5 56 13 84 44
ALSYMEX on ALCEN's website
Defense & Security Engineering, Maintenance & Services
Defense & Security Mechanical & electronic components
Energy Nuclear
Energy Engineering, Maintenance & Services
Energy Oil & Gas
Aeronautics & Space Engineering & Maintenance
Aeronautics & Space Mechanical components
-
read more
For over 40 years, TRONICO has specialized in the design and integration of electronic systems for high-added-value equipment, throughout the equipment's life cycle.
In addition to its core business of EMS (Electronic Manufacturing Services), it positions itself as an ODM (Original Design Manufacturer) in the development of complex electronically-dominant systems.
Relying on its experienced R&D team and its various partnerships, TRONICO develops comprehensive systems that incorporate complex physical phenomena and their associated electronics. Over the years, and through its experience, TRONICO has forged strong links with scientific and technological partners that enable the company to research and analyze global and innovative solutions (physical, electronic, mechanical, IT and other principles).
TRONICO is organized into "business units", adapted to the needs of its target markets: Aeronautics, Defense & Security, Energy, Rail, Industrial and Medical. This optimal organization encourages technological, technical and functional synergies between markets.
- Website
- Contact
- Location on map
- +33 2 51 41 91 35
TRONICO on ALCEN's website
Defense & Security Mechanical & electronic components
Energy Engineering, Maintenance & Services
Aeronautics & Space Engineering & Maintenance
Aeronautics & Space Electronic components
Medical & Healthcare Mechanical & electronic components
Black Box Search
ALSEAMAR operates 24/7 in the event of air accidents to quickly locate black boxes, covering every sea in the world.
To do so, the company uses its 20 years of experience in subsea acoustics and the two long-distance acoustic detection systems ALSEAMAR has developed and operates in the event of accidents, the DETECTOR-1000 and the DETECTOR-6000.
The turnkey service offered by ALSEAMAR includes: - dispatch to the site of equipment and personnel to conduct searches, - deployment and recovery of DETECTOR, and - issuance of a mission report.
Submerged 1,000 m under the sea, the DETECTORs are capable of detecting and distinguishing the low noise levels of a flight recorder from the background sea noise at up to a depth of 4,000 meters.
ALSEAMAR successfully intervened in 2016 to locate the black boxes of EgyptAir flight MS804 at a depth of 3,000 m in the Mediterranean sea. The company has also intervened successfully in Sharm El Sheikh (Red Sea) and Sochi (Black Sea).
The location process can take a few hours or a few days, depending on the size of the search area and the meteorological conditions.

Industrial Process Automation and Robotization
ALSYMEX designs and manufactures automated systems using PLCs, control and operating equipment (industrial control panels) and a man-machine interface for the monitoring, integrating and programming of robots.

Mechanical Design and Production
ALSYMEX offers its customers solutions combining the machining and assembly –in particular by welding– of large, high-precision mechanical components and subassemblies.
ALSYMEX brings together the industrial resources and expertise of six former subsidiaries of the ALCEN Group: ALSYOM, ALYNOX, ATMOSTAT, CHAMPALLE, SEIV and SIRATECH.
Some key ALSYMEX projects:
- Manufacture of flaps for the Rafale engine
- Manufacture of Rafale and Falcon 5X assembly tools
- Design and manufacture of assembly tools for Airbus
- Manufacture of molds for the production of composite aircraft subassemblies
- Manufacture and polishing of molds for satellite antennas

Mechanical Design and Production
ALSYMEX offers an integration service, including for exotic materials, during design of complex systems. Lengthy, solid experience acquired in major projects in the Space, Aeronautical and Fusion sectors means that it can guarantee full management of property, personal and environmental protection engineering.
ALSYMEX experts intervene in the early stages of a project, from the architecture of the client solution (particularly in the infrastructure and product interface definition and operational checking phases in the user environment) to systems and equipment support engineering, throughout the solution's life cycle.

Electronic Design and Production
TRONICO offers a wide range of electronic design studies and production services specific to the Aeronautical, Defence & Security and Space markets:
- Energy storage and conversion
- Power electronics
- Communication & networks
- Radiofrequency
- Digital electronics/FPGA/µC
- Embedded software
- Ruggedized ECUs
- High temperature
- etc.
Products, from DAL A to E, are developed in line with guidelines ARP 4754A, DO-178C, DO-254 and DO-160G, as well as with the reliability prediction handbook MIL-HDBK-217F instruction 2 and the FIDES guide.
A dedicated quality department ensures compliance with internal processes and standards.
An experienced team analyzes and develops products to meet dependability requirements (RAMS: Reliability, Availability, Maintainability and Safety).
