Manuals:MBUltraFblV5:Quicktrim/de

Beim ersten Einstellpunkt vom PARAMETERMENÜ kannst Du im späteren Flugbetrieb schnell und einfach die Servopositionen nachstellen. Das 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 eingeschalteter Lagestabilisierung in eine bestimmte Richtung driftet.

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

Benutze nie die Trimmfunktionen der Fernsteuerung! Beim MICROBEAST ULTRA 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. Um dorthin zu gelangen musst Du den Knopf am Gerät aus dem Betriebsmodus heraus kurz drücken, so dass die gelbe Menü LED A zu blinken anfängt. Dann den Knopf loslassen. (Wenn Du zu lange drückst, kommst Du in's SETUPMENÜ zu Punkt A, die Menü LED leuchtet dann dauerhaft!)

Taumelscheibe trimmen

Zum Trimmen der Taumelscheibenservos muss der Heckkreisel auf Heading Lock stehen und die AttitudeControl (Rettungsfunktion) muss deaktiviert sein! Über den/die Steuerknüppel für Roll und Nick wird dann die Taumelscheibe in die jeweilige Richtung getrimmt; ähnlich wie bei der Digital-Trimmung an der Fernsteuerung entweder durch Antippen des Knüppels für kleine Trimmschritte oder durch festhalten, um die Taumelscheibe über einen größeren Bereich hinweg zu trimmen. Das Pitch wird über den Hecksteuerknüppel getrimmt (Heck links = weniger Pitch, Heck rechts = mehr Pitch). Die Farbe der Status-LED gibt einen Hinweis, ob und wie weit die Trimmung auf der jeweiligen Funktion verstellt ist, bei einer Änderung der Trimmung blinkt sie kurz in der jeweiligen Farbe.

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 ULTRA 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).

Adjustment with StudioX

When StudioX has connected to your MICROBEAST ULTRA, in the device overview main screen click the "Parameter" button. The topic "Quick Trim" provides adjustment buttons to change the trim values for aileron, elevator, rudder and also collective. Positive values indicate the directions right, forward or up. Negative values indicate left, backwards or down. Please note that the first screen "Quick trim" has global effect, meaning that the values set here are used in all of the Paramter Banks (in case you're using the Bank Switching feature). Separate trimming for each bank is not provided.

On the bottom of the screen you can see the trimming for the Artificial Horizon. Here you can trim the tilt on the roll and pitch axis in steps of 0.5 degrees. Please read the notes above for more information about this feature.