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FOG & FMU Series
FOG & FMU Series

FOG & FMU Series

Brand:SAFRAN Model:FOG & FMU Series

FMU is a multiple-axis fiber optic inertial measurement unit, with up to 6 degrees of freedom. Designed for industrial, civil and military applications, FMUs combine very high reliability, excellent signal stability and very low noise.

FMU is a multiple-axis fiber optic inertial measurement unit, with up to 6 degrees of freedom. Designed for industrial, civil and military applications, FMUs combine very high reliability, excellent signal stability and very low noise.

Performance suited to customer needs

Product development according to aviation certification process

High-volume, flexible manufacturing & repair capacity

FOG for ultra-long-range electro-optical systems


The FOG inertial measurement unit is a critical component in gun/turret/gimbal stabilization systems. Multispectral day/night observation requires accurate targeting to meet users evolving mission requirements, even for the most critical tasks, while also keeping workload manageable. A FOG unit integrated in a thermal imager ensures a stabilized line-of-sight and video channel to observe the battlefield day and night.

Multiple axis fiber-optic gyroscopes


Equipped with high-performance closed-loop FOG & MEMS (Micro Electro Mechanical Systems) accelerometers, our FMUs ensure:

- Accuracy & integrity, guaranteed by the best quality of sensors and algorithms

- Robustness & reliability, guaranteed by deep disruptive innovations

- Low-life-cycle cost, guaranteed by a very high MTBF & low maintenance cost

Frequently Asked Questions

  • What is the typical lead time for gas turbine overhaul services?
    The lead time for gas turbine overhaul services ranges from 6 to 14 weeks, depending on the damage assessment, parts availability, and whether hot-section repairs are required. Expedited options may reduce this by 30%.
  • Do you provide customizations for legacy turbine control systems?

    Yes, we retrofit legacy systems (e.g., GE Frame 5, Siemens V94.2) with modern digital controllers, typically completing hardware integration within 4-8 weeks. Software migration requires additional validation time.

  • How often should industrial gas turbines undergo performance testing?

    We recommend annual performance testing under ISO 3977-2 standards. Critical applications (e.g., offshore platforms) may require semi-annual tests with emissions compliance checks.

  • Are your radiation-hardened (rad-hard) semiconductors compliant with MIL-PRF-38535?

    All rad-hard devices (e.g., FPGA, ADC) are QML Class V certified under MIL-PRF-38535 and tested to MIL-STD-883 Method 1019 for SEU tolerance. Full qualification reports are available upon request.

  • What temperature ranges do your military-grade ICs support?

    Our ASICs and power management ICs operate across -55°C to +175°C ambient temperatures, with derating curves provided in military temperature range (MTR) datasheets.

  • Are PMA parts interchangeable with OEM components?

    Our PMA parts (e.g., actuators, sensors) hold FAA/EASA Form 1 certification and match OEM form/fit/function. Installation requires SB/MB documentation per FAA AC 23.1529.

  • What traceability standards do you follow for aircraft fasteners?

    All NAS/MS fasteners include full DNA traceability: melt source (AMS 2301), heat/lot numbers, and AS9100-compliant MTRs with ultrasonic test reports.

  • How do you handle urgent AOG (Aircraft on Ground) requests?

    AOG orders ship within 4 hours for stocked items (FAA-PMA, EASA Part 21G). Non-stock critical parts trigger priority manufacturing with 72-hour max turnaround.

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