This freeware module is intended to be used with CowanSim H-125 helicopter as a realism enhancement mod.

List of features:

• *NEW* MSFS2024 Flight Model
• Realistic AS350/H125 Vortex Ring State (VRS) model
• Loss of Tail-rotor Effectiveness (LTE) model
• Retreating Blade Stall (RBS) model
• Custom engine temperature (T4) and engine hotstart modelling
• Realistic H125 Hydraulic system including Servo Transparency phenomenon
• Stress damage model on different helicopter components: engine, main rotor and tail rotor transmission
• Random failures model system based on realistic aviation failure rates: engine fail, oil leak, main rotor failure, tail rotor servo stuck, etc.
• Engine / blades icing effects 
• ...and many other additions & fixes! (check version readme)
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(Please, check the UserGuide!)

** DONATIONS **

If you're really enjoying this mod and want this developer to continue improving these mods and creating new ones, please donate 

Paypal: jacn1277@gmail.com

THANK YOU! **

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IMPORTANT NOTE:

To anyone using FFB devices and reporting the centering issue:

The TRIM RELEASE button is absolutely NEEDED and it has to be binded (MSFS event -> ROTOR_TRIM_RESET) as it is present in the real HeliSAS (trim release) and also in my recreation. 

It basically does 3 things:

1) It unlatches the servos from the cyclic allowing a free (basic helo) cyclic movement and behaviour.

2) Upon Trim Release (TR) release, the system takes the new attitude references...avoid using it will cause the SAS using the same (old) attitude references, with the resulting uncomanded (centering) movement.

3) In my code, the TR release action is also used to memorize the new cyclic center in a way the deltas over that position are read as the new cyclic inputs

Actually this described sequence is closer to how the real system works, once the TR is released, the servos re-latch to the cyclic keeping the new position, hands-off.

So, the behaviour in your FFB should be,like this:

• SAS OFF -OR- TR pressed -> small oposition forces (only friction / damping) to stick displacement but not centering
• SAS ON -AND- TR released -> higher forces  and behaviour similar to a springs  joystic. In reality, the servos resist movement in a manner similar to the joystick springs, and when the controls are released, the cyclic returns to the position "memorized" by the servos.

In the SAS version (real thing) you need to either keep the TR pressed for manoeuvering (less cyclic forces and no stability augmentation) or to fly "through" the SAS (higher forces with stability augmentation) BUT in either case you need to release (always in the 1st case) or quick press-release the TR (2nd) at the new attitude when the manoeuver is finished, otherwise the servos will recover the "memorized" pre-manoeuvering positions, and the system will keep "recentering stick".

FWIW I have my Brunner configured with a button that sets SAS ON / OFF and, at the same time, via CL2Sim (native Brunner SW) it switches between soft forces (SAS-OFF no servos acting) and hard-forces springs like (SAS ON). The TR button is also configured at CL2Sim in a way it releases or clamps the stick at the new position. This is is done by CL2Sim but surely will be done the same by any other FFB device.

In short....in my mod like in the real HeliSAS, the TR button (MSFS event -> ROTOR_TRIM_RESET) MUST be used in either of the 2 ways I have described above.