
SkyNaute is an ultra-compact hybrid inertial navigation system, based on Safran’s patented Crystal
HRG (hemispherical resonator gyro) technology. Thanks to this new technology, SkyNaute offers
an extremely lightweight and compact design. Combining high integrity and precision, the SkyNaute
navigation system delivers outstanding reliability, even in environments where satellite navigation
signals are absent or jammed.
The APIRS attitude and heading reference system, largely proven in operation, provides vital flight
control data to the helicopter in three axes: roll, heading and pitch. Based on fiber-optic gyros (FOG)
and accelerometers using MEMS (micro-electromechanical system) technology, it features high
reliability, easy integration in the airframe and self-calibration in flight.
The 4-axis trim actuators artificially reproduce flight control forces for helicopters. They provide load
compensation by correcting the anchor point, along with damping and friction capabilities for
precision force feedback and feeling. They can also be controlled through the autopilot.
With this selection for Tiger modernization, Safran Electronics & Defense ensures design synergies
with other Airbus Helicopters: in particular, SkyNaute has been chosen for the Joint Light Helicopter
(HIL) program, APIRS for the H160 and trim actuators on all of the company’s helicopters.

Safran’s Euroflir 510 multispectral optronic sight was already selected for the modernized Tiger in
2022, giving this helicopter state-of-the-art performance capabilities, especially in terms of
ergonomic displays and weapon effectiveness.












