User manual PowerBox Mercury SRS with OLDED Screen and GPS

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- ATT ASSIST ALL:
This setting is identical to the above option, except that attitude maintenance is also
active on rudder. This makes it easy to y slow rolls, as the rudder automatically
maintains the correct attitude. However, this ight mode option must not be used for
normal ying, as the rudder would then try to maintain heading through aileron turns,
making the model reluctant to turn.
- TORQUE ROLL:
In this mode the iGyro is capable of maintaining a model’s attitude once it is brought
into the vertical position. When this option is selected, all three gyro axes are turned
up to 100%, and Heading mode is active. This ight mode must not be selected un-
less the model’s forward speed is already close to zero. The torque roll is initiated as
follows: you approach the manoeuvre by slowing the model down. The model is then
rotated to the vertical position, and you activate the TORQUE ROLL option using the
ight mode switch (usually FM3); you then adjust the throttle to maintain the model’s
height. The other control functions should be left untouched. If you now wish to ro-
tate the model around the roll axis, you can do that by giving an aileron command,
taking care not to touch rudder and elevator at the same time. When you wish to
terminate the manoeuvre, remember to disable the TORQUE ROLL option using the
ight mode switch before opening the throttle.
- VECTOR THRUST:
This option is specially tailored to suit model jets with thrust vector control. This ight
mode option has several aspects:
• All gyro outputs including vector control are set to 100% gain.
• Attitude Assist is disabled. This is important with a jet, because there is no pro-
pwash over the control surfaces.
• The control functions for the assigned vector outputs (these are established later as
part of the Assistant procedure) are activated. This means that rudder and elevator
mixers must not be set up at the transmitter, as the Mercury SRS carries out these
functions. When the ight mode option is disabled again, thrust vector control is
restored to the neutral position which was detected when the PowerBox was rst
switched on.
• The Airspeed factor is set to a value of 5; this provides more time to switch ight
modes as the model approaches and leaves the hover, without a tendency for the
model to oscillate due to the high gain setting.
The function is set up by accessing the appropriate ight mode using the ight mode
switch, and selecting the desired function using buttons I and II on the SensorSwitch.