Engines and related Systems
The engines of the rotorcraft are controlled by FACEC (Full Authority Digital Engine Control). This computer controls rotor RPM as function of density altitude as shown in the following figure. Tumbler on Engine Control Panel provide access to FACECs (2) and Engines (1). Refer to the checklist for further informations.
The complete procedure for starting and shutting down the engines can be conveniently carried out automatically via menu items:, and .
To improve performance in CAT-A situations or with a gross mass above 2825 kg, the rotorcraft is equipped with a system that automatically increases rotor RPM by up to 3 %. The system is armed by pressing HI-NR Mode button. When armed, HI-NR Mode will be activated while speed is less then 55 KIAS. A green caution light above the Master Caution Light indicates this.
Manual Throttle Control
If the governor fails or for training purposes, the throttle of the affected engine can be regulated manually. This requires two TWIST GRIPS on the collective lever. Manual control is activated via the ENG MODEL SEL switch on the engine on the OHP. Setting this switch to MAN freezes the currently set throttle. The speed can now be regulated manually turing the respective TWIST GRIP out of N position.
To return to automatic control, first set the ENG MODE SEL switch back to NORM, then carefully move the TWIST GRIP to position N.
Information will be coming soon...
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