Futaba 3FR - Manual (Page 18)

16
REFERENCE
G
LOSSARY
The following defines the symbols and terms used in this instruction manual.
Aileron
Control surface at the left and right sides of
the main wing of an aircraft. It usually con-
trols turning of the aircraft.
Channel
Represents the number of control systems.
It can also represent the number of servos
that are operated.
Down
Means down elevator. It is the direction in
which the trailing edge of the elevator is
pointing down.
Elevator
Control surface that moves up and down on
the horizontal stabilizer of an aircraft. It usu-
ally controls up and down.
Linkage
Mechanism that connects the servos and the
fuselage control surfaces.
MIX
Means the mixing function. V-tail mixing,
Elevon mixing, etc..
Modulation method
Two modulation methods are used with ra-
dio control: AM (Amplitude Modulation) and
FM (Frequency Modulation). Another
method that encodes and transmits the
modulated signals is called "PCM".
Neutral
Means the neutral position. It is the state in
which a transmitter stick returns to the center
when not operated.
Normal (NOR)
For the servo reversing function, it is the nor-
mal side. The opposite side is the reverse
side.
Proportional
Because today's radio control sets control
servos in proportion to stick operation, radio
control equipment is called proportional.
Reverse (REV)
With the servo reversing function, this is
used to mean the reverse side. The opposite
side is the normal side.
Rod
A bar that connects the servos and the fuse-
lage control surfaces.
Rudder
Tail control surface that controls the direc-
tion of the aircraft.
Servo horn
A part that is installed to the shaft of a servo
and changes the rotating motion of the servo
to linear motion and transmits the linear mo-
tion to a rod. Servo horns come in various
shapes.
Servo mount
Fuselage base for installing a servo to the
fuselage.
Stick
Rod for operating the transmitter.
Throttle
Part that controls the air mixture at the en-
gine intake. When opened (throttle high
side), a large air mixture is sucked in and the
engine speed increases. When closed
(throttle low side), the engine speed de-
creases.
Trim
A device that fine adjusts the neutral point of
each servo for safe flying. It is a mechanism
that corrects bad tendencies of the aircraft.
Up
Means up elevator. Direction in which the
trailing edge of the elevator is pointing up.
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