User manual

In a simple control setup, each axis has a dedicated control surface (or pair of surfaces in
the case of aileron). Each axis is controlled by a separate channel passed from the
transmitter through the receiver (and its integrated stabilizer) and on to the servo that
moves the control surface. For the Hyperion receivers, channels 2, 3 and 4 are used,
respectively, for the three basic controls, aileron, elevator and rudder.
Mixing is the process of combining transmitter inputs to provide the servo output(s)
required for control. For many purposes, the mixing is done in the transmitter. For
example, throttle can be mixed to elevator so that as power is increased, a small amount of
down is added to the elevator signal in order to counter the model’s tendency to climb.
Another common mix couples aileron and rudder to aid in coordinating turns. The
important thing about such mixes for our purposes is that they don’t affect the basic
arrangement of allocating one channel to each control axis or function. Consequently, they
still provide the separate inputs required by the stabilizer. The V-tail and elevon mixes we
are concerned with are different in that they involve two separate and independently
driven control surfaces working together to provide a single aerodynamic function. For
example, a pair of elevons must work in unison to produce pitch and in opposition to
generate roll. To achieve this, the mixing MUST be done on board, since the stabilizer
cannot interpret inputs in the form of “mixed” control commands; it only understands roll,
pitch and yaw. Any V-tail or elevon mixing in the transmitter must
therefore be disabled. Flaperon is another case where two inputs (aileron and flap) are
involved, but here the mixing is done in the transmitter. Let’s take a look specifically at how
these three types of control setup are dealt with in relation to the Hyperion Stabilized
Receiver. The terms “J” and “DIP” refer to the six small white slide switches on the receiver.
V Tail
In this arrangement, the functions of elevator and rudder are managed by tail control
surfaces that move up or down together for pitch, right or left together for yaw.
In the transmitter tail type (if available) is set to Normal; this ensures that separate (not
mixed) elevator and rudder signals are sent to the stabilizer. In the receiver, DIP switch J4
(elevons) is OFF and DIP switch J5 (V-tail) is ON, thus activating on-board mixing. The
setting of DIP switch J6 depends on the aileron configuration. The tail servos are plugged
into channels 3 and 4.
Elevon / Delta Wing
This arrangement is generally used for a tailless aircraft, such as a flying wing or delta, in
which the wing control surfaces (elevons) are used to control both pitch (elevator) and
roll (aileron). The elevons move up or down together for pitch and in opposite directions
for roll. In the transmitter wing type is set to Normal. In the receiver, DIP switch J4
(elevons) is ON to activate mixing. DIP switches J5 (V-tail) and J6 (flaperon) are OFF. The
elevon servos are plugged into channels 2 and 3.
Flaperons (dual aileron servos)