D) Defining The Installed Orientation Of The Royal Srs; E) Defining The Wing Type; F) Defining The Individual Axes - PowerBox Systems Royal SRS Instruction Manual

mode switch is only needed in order to switch Heading mode on and off for the rudder. In the case
of the rudder, Heading mode is only required for particular manoeuvres - such as slow rolls and
knife-edge flight - and should be switched off again after the manoeuvre by changing the Flight
Mode. When a model is negotiating a normal turn, Heading mode for the rudder has an unwanted
effect, because the model's tail tries to maintain the aircraft's previous direction, and counteracts
the pilot's commands.
Aileron and elevator gain can be set to the same value for all flight situations - the GPS Sensor
makes flight phases unnecessary for "normal" fixed-wing model aircraft.

d) Defining the installed orientation of the Royal SRS

To simplify operation and installation, the orientation of the Royal SRS has to be defined once when
it is initially installed in the model. Once this is accomplished, it is possible to use the standard terms
AILERON, ELEVATOR and RUDDER in all the other menus - such as GYRO SETTINGS and OUTPUT
MAPPING.
The orientation can either be entered using the BASIC SETUP ASSISTANT or in the GENERAL SET-
TINGS menu.

e) Defining the wing type

The Royal SRS features an integral Delta and V-tail mixer, which makes it possible to fly deltas and
V-tailed models with heading-lock gyro stabilisation! This menu can be activated in the GENERAL
SETTINGS menu: simply select MIXER: DELTA-WING or V-TAIL.
Caution: it is essential to switch off any delta or V-tail mixer at the transmitter. The mixing must be
carried out in the iGyro itself.
The integral iGyro analyses the aileron and elevator signal from the transmitter, calculates the de-
viation of the sensors, and passes the signal to the two elevons.
Delta mixing is applied to the AILERON-A and ELEVATOR-A output functions, i.e. you should assign
aileron to AILERON-A, and elevator to ELEVATOR-A, as described under Point 5.
For example, this leaves ELEVATOR-B available for a thrust vector or canard control system, which
can then be set up independently.

f) Defining the individual axes

Once again we repeat our usual advice: we strongly recommend that you set up the model using the
BASIC SETUP ASSISTANT and the TESTFLY ASSISTANT. Manual installation should only be used if
your model requires non-standard settings.
Once the iGyro is installed, we can move on to setting the gain and direction of effect of the gyro.
Caution: it is absolutely essential that you set and check the direction of gyro effect with the
greatest possible care! Setting an incorrect direction of effect invariably results in the loss of
the model.
This is what would happen: any external influence (e.g. gust of wind) upsets the model, and the
gyro system tries to correct this. However, as it operates in the wrong direction, the effect is
to amplify the problem by applying additional control surface travel. This in turn is assessed
as a further external influence, and more corrective action is applied. The net result is that the
gyro causes the control surface to run to maximum travel in just a few seconds, and there is
no chance of correcting this with the transmitter sticks.
28 PowerBox-Systems − World Leaders in RC Power Supply Systems