Imprecise Rescue

Rescue/Stabilisation is imprecise :

1 Bench testing

If rescue or stabilisation is not precise after update to 3.0 version, do the following test:

1. Put model at a table and engage the rescue/stabilisation.
2. Swashplate should be perfectly level. If model has inclined skids, swashplate will be tilted backwards little bit to compensate this attitude.

1.1 FIRMWARE 3.0: Swashplate is tilted after engaging

If swashplate is tilted even that unit itself is perfectly parallel with the horizontal level (ground), please perform the following procedure:

1. Put model at a table so that unit is as close as possible to the horizontal level. If model has inclined skids it is necessary to compensate for this, so that unit is really level with respect to ground.
2. If you are unsure, remove unit from the model and put it at a table.
3. Start the Spirit Settings and press the CTRL + ALT + U shortcut. A window for the Accelerometer Calibration will occur which must be confirmed.
4. In a moment the problem should be resolved. After several seconds tilt should disappear and from the moment everything will be OK.
5. Additional calibration is not required.

2 Rescue/Stabilisation is imprecise during flight

• Very important is to check, whether the Position and the Swashplate parameters are configured correctly. If not, these modes can't operate properly. Make sure that in the Diagnostic tab all directions correspond with a real stick movement.
• Check if the unit is aligned in all 3 axes. Alignment error should be approx. in 1° range or less. You should mount the unit precisely in respect to the helicopter' frame. Use only one provided adhesive tape. The unit should not flex or move in any way - mounting should be rock solid.
• Rescue and Stabilisation can work in nearly any condition. But in case that your Vibrations are exceptionally high it can't be guaranteed. You can check vibrations with Spectral Analysis in the software, especially Y - Aileron axis, where there are mostly the highest.
• Helicopter is equipped with a cooling fan that is producing ultrasound frequency. Fans from HobbyWing ESCs are known for this. This has a great impact on the precision of Rescue and Stabilisation modes.

In case that the model is tilting to the same side during activation always, then the basic servo settings are likely not correct.

Please verify that the swashplate is perfectly leveled when Servos/Subtrim (tuning) is enabled. During setup it is necessary to use the Cyclic Leveler tool.

The easiest test for checking the rescue is to fly the helicopter in very normal way (your style). Then, immediatelly after the flight while rotor is not spinning anymore, you can activate the bailout/stabilisation. If you can see that swashplate is in the horizontal position and helicopter too, then it should work correctly anytime during the flight as well. This is very safe method for checking the operation.