Manuals:MBPlusFblV5:Quicktrim/de

Der erste Einstellpunkt im Parametermenü bietet die Möglichkeit im späteren Flugbetrieb schnell und unkompliziert die Servomittenpositionen nachzustellen. Dies kann notwendig werden, falls der Heli im Schwebeflug langsam in eine bestimmte Richtung abkippt oder bei starken Pitchwechseln aus dem Schwebeflug heraus nicht gerade auf- und ab steigt. Wenn die PROEDITION Firmware auf dem Gerät installiert ist, kann zusätzlich der künstliche Horizont nachgetrimmt werden, falls der Helikopter bei zugeschalteter Lagestabilisierung in eine bestimmte Richtung driftet.

Hinweis: Die Trimmfunktion ist ein globaler Parameter. Falls die Bankumschaltung verwendet wird, dann wirkt die Trimmung in allen Parameterbänken gleichermaßen. Eine separate Trimmung für jede Bank ist nicht vorgesehen und nicht notwendig.

Benutze niemals die Trimmfunktionen der Fernsteuerung! Beim MICROBEAST PLUS würde dies als Steuerkommando wirken, um den Helikopter zu drehen und nicht als Servotrimmung.

Einstellung am Gerät

Die Trimmung ist bei PARAMETERMENÜ Punkt A zu finden. To do so briefly push the button when in operation mode, so that the yellow Menu LED next to A will start flashing quickly (do not hold the button too long, as this will enter SETUP MENU point A which is shown by a solid lit up LED A).

Trimming the swashplate

To activate the swashplate trimming mode make sure your tail gyro is set to Heading Lock mode and that AttitudeControl is not active at the moment (if applicable)! Then you can to directly adjust aileron, elevator and collective here, without taking care about the single servos. Similar to the digital trim function of most transmitters here at PARAMETER MENU point A you can adjust the swashplate “one click“ by tapping the aileron or elevator stick briefly in the desired direction. To trim the collective we use the rudder stick (left = minus, right = plus). If you want to trim the swashplate any further repeat tapping the stick several times or simply hold the control stick pushed for a longer time to automatically perform several trim steps. The color of the Status-LED gives you an approximate indication of how much you did trim and when the trim has changed the Status LED will flash for a moment.

Rudder servo

If the tail gyro is operated in Normal-Rate mode, the rudder servo must often be trimmed precisely so that the tail rotor produces just enough thrust to counteract the rotor torque in hovering flight. Otherwise the helicopter would constantly drift into one or another direction on its vertical axis as the gyro only dampens sudden movements but does not control the tail rotor‘s absolute position.

To trim the rudder servo proceed as follows: Make sure your tail gyro is set to Normal-rate mode! By tapping the rudder stick briefly in the desired direction, you can trim the rudder servo now. If you want to trim the rudder any further repeat tapping the stick several times or simply hold the control stick pushed for a longer time to automatically perform several trim steps. The color of the Status-LED gives you an approximate indication of how much you did trim and when the trim has changed the Status LED will flash for a moment.

Reset adjustment

You can delete all trimming by pushing and holding the button on the device for at least 10 seconds, then release. This will reset all trims back to factory state but will NOT affect the single servo trimmings of SETUP MENU! So you can change the trimming on the flying field if necessary and if it was wrong or too much, you can easily clear it out without affecting the other settings.

Trimming the artificial horizon (optional)

If the helicopter is not aligned horizontally as desired with active AttitudeControl, i.e drifts to one side in hovering, the artificial horizon can be readjusted. To do so activate AttitudeControl at PARAMETER MENU point A with the transmitter‘s AttitudeControl channel and make sure the tail gyro is in Heading Lock mode. By moving the aileron or elevator stick the roll and pitch tilt of the horizon can be increased/decreased. Briefly touching the appropriate stick will trim the horizon stepwise by 0.5 degrees to the specific direction. Touching the stick repeatedly or holding it for longer time will trim the horizon by several steps. The color of the Status-LED gives you an approximate indication of how much you did trim and when the trim has changed the Status LED will flash for a moment.

When you place the helicopter in horizontal position and you should be able to see the effect of trimming. When the swashplate is perpendicular to the main shaft this will by the approximate position of the helicopter in flight. Note that the helicopter usually is slightly tilted to the side in hovering flight due to the drag of the tail rotor. Therefore as a starting point by default the system has a trim of 4 degrees to the right to make the heli tilt against the rotor torque (using a helicopter with clockwise turning rotor). Also note that AttitudeControl can not recognize the absolute position of the helicopter. Depending on wind and environmental conditions it may happen that the helicopter stays level but drifts into a certain direction during hovering flight. You may use the trim to compensate this an hang the helicopter more into the wind, but when turning the heli by 180 degrees it will drift even more! So ideally you trim the horizon on a calm day when there is no wind.

As a last note please be aware that this is not a professional autopilot system. The system can be influenced badly by long-lasting vibrations or fluctuations in temperature. As a result it can't be guaranteed that the helicopter does always comply exactly the same attitude. The performance highly depends on many environmental conditions. So keep the system as far away as possible from rotating parts on the heli. Make sure the heli is running smooth and free of vibrations and make sure the MICROBEAST PLUS unit is perfectly aligned to the rotation axis of the helicopter (otherwise the axis will be cross connected together and the calculation of the artificial horizon will not match the real movement of the heli).