User's Manual

Table of Contents - Page 28 Table of Contents - Page 29
Initial Menu feature review for GLID programming
Setting up Crow
Setting up flight mode wing camber and elevator compensation
CAMB (Wing camber)
1) Activate the function by pressing both DATA buttons
simultaneously.
2) Watching the motion of the control surfaces on your model,
set the value for each of the servos with the left-hand joystick
pulled all the way to the bottom of the transmitter case.
Begin with the aileron servos in CH 1 and CH 5: Unless the
servos buzz and stall, set both ailerons to the default 100%
upward (Note that you can go to a negative value % to
reverse the direction of the movement of one of the aileron
servos if necessary).
3) Set the flap servo on CH 6 to 100% full down (If you have
two flap servos, they should be connected with a Y-harness
to the channel 6 slot on the receiver).
4) Finally, curser to CH 2 and set the elevator travel value so
the elevator moves down just a bit for pitch control: 15% is a
good starting point, though in-flight testing is necessary for
making true, final adjustments.
Launch: When switch SW-3 is pulled toward you the ailerons
and flaps will rise together slightly to "reflex" the airfoil for
high-speed flight and the elevator will kick up a few degrees to
rotate the model vertical in the first 5 seconds or so of flight.
Cruise: When you push switch SW-3 to the middle position,
the ailerons and flaps will come even with the trailing edge and
the elevator will move down very slightly (relative to its normal
angle of incidence). This allows the glider to quickly fly between
thermals and through areas of sink.
Thermal: With the SW-3 switch pushed away from you,
the ailerons and flaps will droop down 3/6-in. and the elevator
will come up a few degrees from its normal angle of incidence.
This is the mode to be in when you suspect you have hooked
into a thermal. The glider is now at its lowest sink rate and can
fly just above a stall to allow you to turn tightly and keep in the
small core of the thermal.
1. The first step is to leave this screen and move down to the
Flight Condition (FLT C) screen in order to put the wing
camber and elevator action of each mode on the
three-position SW-3 "FLT Mode" switch on the upper
right-hand top of the transmitter case. Use the Right EDIT
button to move down to the FLT C screen.
2. Now activate what will be the "launch" mode by moving the
switch position toward you and then hitting both DATA buttons.
The "Inh" symbol will change to "On" and ST2 will be blinking.
Move the switch all the way back and, in the same way,
activate switch position ST1 which will become our "thermal"
mode. The middle, normal position (NOR) is "cruise". You can,
of course, reverse the launch and thermal positions to what
feels intuitive to you.
The Tip Sheet
While the Camber function also appears in the ACRO menu,
the use of this feature is significantly different for Sailplanes
than it is with Power planes. Please refer to the instructions
below to understand how to make the most effective use of
Camber on your Sailplane.
A solid understanding of the Flight condition feature will help
when programming wing Camber.
When flying gliders featuring modern, thin airfoils the ability to
change the shape of the airfoil by reflexing (raising) or
cambering (lowering) the trailing edge in combination with
making simultaneous, slight changes in elevator trim is crucial
to optimizing the performance of the model in a variety of flight
conditions and tasks. The Optic Sport offers a selection of up
to four flight condition modes in which you can program varying
amounts of aileron, flap and elevator trim (as well as dual-rate
and exponential values). These modes are activated by either
switch SW-3 or SW-1.
A typical example for setting up a discus-launched glider for
optimum performance would consist of these three flight modes
(which are all assigned to SW-3):
SAFETY WARNING: When checking out the in-flight response
of your model to the crow settings, be sure to first gain at least
200 feet of altitude to allow time for you to recover from any
loss of control.
Servo Connection List
Activating Flaperons
CROW (Glide-path and airspeed control)
(Crow raises the ailerons and lowers the flaps when you move
the left-hand joystick toward the bottom of the transmitter case)
In this screen you can activate the Crow air-brake and glide
path control function and set the values for the aileron, flap and
elevator servo movements. The more Crow you apply during
the landing approach (with the left-hand joystick), the more the
glide path steepens and the glider slows down. Because you
can regulate the amount of crow, you can precisely control
where and how slowly the glider lands-an important factor for
landing on limited-length runways (gliders are generally a lot
more "slippery" than power planes!) and in contests where you
are rewarded points for landing on a target.
The Tip Sheet
You must have A.DIF activated for ch. 5 to appear on the
CROW screen
Creating aileron differential
Now let's reduce the downward travel of each aileron to about
half that of the upward travel (a good starting point for setting
up differential on a typical sailplane:
1. Be sure MAS and "1" are blinking. Now, as you hold the stick
to the left, reduce the value with the -DATA button to 50%.
2. Use the Right CURSOR to get "SLV 1" blinking and then
reduce the travel value to 50% as you hold the stick to the
right. Now your ailerons are programmed with 50% differential.
This is the Main Function Menu screen (instead of FLPN in the
ACRO baseline) where you can activate the aileron servo
plugged into channel 5 to create flaperons. It is also where you
can create aileron differential: Being able to adjust the ailerons
so they can travel more in one direction (usually about twice as
much UP movement as DOWN) is an especially important
quality for sailplanes as differential reduces the "parasitic" drag
due to a yawing fuselage and to unnecessary aileron travel.
Using the right-hand EDIT button, scroll down to the ADIF
screen and activate the differential programming by pressing
both DATA buttons. The "MAS" and CH "1" should now be
blinking and CH 5 "SLV" holding steady (indicating the master
servo is channel one and its slave is channel 5).
The default values for both left-hand stick throw (L/U) and
right-hand stick (R/D) should be 100%. Now, when the right
wing's aileron moves up and down with the stick throw, the
left-wing aileron follows suit (but in the opposite direction).
If you activate the Crow function and/or the Elevator-to-Flap
mix, both ailerons will move in unison as Flaperons.
Note: You must activate this program to create flaperons before you
can set up Elevator-to-Flap, Camber, or Crow mixing functions.
Nose Points outside Circle
increase coupling and/or
differential
Coordinated turn
fuse lines up with turn direction
(don't change anything!)
Nose Points inside circle
Too much coupling or differential.
Reduce one or both.