Sailplane Section 6
Device Select
The device select screen is used to select the following:
• To assign/activate flight modes to a variety of
switches
• To assign the motor function to the spoiler stick,
levers or switches
• To program the digital aileron and rudder trims so
that they are common or separate in each flight
mode
• To assign the flap (camber) adjustment to one of
the two available side levers
• To assign the aux 2, 3 and 4 channels to various
levers, switches or sticks
• To activate or inhibit the motor, flap, aux 2, aux 3
and/or aux 4 channels
Flight Modes
Flight modes allow nearly all of the parameters (i.e.
dual rates, camber adjust values, preset trims, all types
of mixing, etc.) to be programmed and then selected in
flight via a switch(es). The PCM9X II offers up to 5 flight
modes that include Launch, Land, Cruise, Speed and
Thermal. Flight modes allow a sailplane’s programming
to be optimized for up to five tasks.
As an example, typically in launch mode:
• The flaps and flaperons are preset with positive
camber to give more lift.
• An elevator preset trim position that gives the best
climb is programmed.
• A high rudder rate with reduced exponential to
give authoritative steering control on launch is
desired, while the elevator and aileron rates are
set to give a medium response.
• Aileron-to-rudder mix is turned off, as are landing
flaps and elevator-to-flap mix while camber
adjustment of the side lever is programmed to
give proportional camber changes to allow for
last minute adjustments based on wind and
winch conditions.
• Aileron differential is set at 50%.
All these (and many more) programming parameters
can be selected by simply moving one switch. At the
top of the launch you prepare to zoom by switching to
the cruise mode. A single flip of the switch neutralizes
the trailing edge while giving the correct elevator trim
for cruise. Rudder-to-elevator and elevator-to-flap
mixes automatically turn on the programmed values
and the aileron differential is now at a much higher 75%
for more coordinated thermal turns. At the flip of a
single switch you’re ready for a zoom launch and for
hunting thermals! And remember there are 3 more flight
modes available. Once you start using flight modes,
you’ll wonder how you ever flew without them.
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