21
Glossary of Terms
(continued)
Pushrod:
The rigid mechanism that transfers movement from
the servo to the control surface.
Receiver:
The receiver unit in the airplane receives your sig-
nals from the ground transmitter and passes the instructions
along to the airplane’s servos.
Roll Axis:
The horizontal plane on which the airplane’s wings
are raised or lowered. By adjusting the ailerons, you can drop a
wing tip below the roll axis and cause the airplane to bank or
roll.
Rudder:
The hinged control surface on the vertical stabilizer
that controls the airplane’s yaw. Moving the rudder to the left
causes the airplane to yaw left; moving the rudder to the right
causes it to yaw right.
Servo:
The servo transforms your ground commands into
physical adjustments of the airplane while it’s in the air.
Servo Output Arm:
A removable arm or wheel that connects
the servo to the pushrod - also called servo horn.
Spinner:
Term describing the nose cone that covers the
propeller hub.
Switch Harness:
This switch is commonly located on the
fuselage and governs the On/Off mechanism for the flight pack.
Tachometer:
A device that measures the engine’s rpm (rota-
tions per minute) by counting light impulses that passes
through the spinning propeller.
Threadlock:
A liquid that solidifies; used to prevent screws
from loosening due to vibration.
Torque Rods:
Inserted into the ailerons, these rigid wire rods
run along the wing’s trailing edge, then bend downward and
connect to the pushrod.
Trainer Airplane:
Designed to fly with high stability at low
speeds, a trainer model airplane allows new users some extra
reaction time as they learn to control the airplane’s movements.
Transmitter:
The device used on the ground to transmit
instructions to the airplane. Three transmitter modes are used
in model airplanes. The most common is Mode 2, where the left
stick controls the throttle and rudder, and the right stick con-
trols the elevator and ailerons.
Vertical Stabilizer:
The vertical surface of the tail gives the
airplane stability while in flight.
Wheel Collar:
The round retaining piece that anchors wheels
in place on the wheel axle.
Wing:
Because wings provide the primary lifting force on an
airplane, adjustments to the wings affect the airplane’s move-
ments while in flight.
Yaw Axis:
The vertical plane through which the airplane’s nose
passes as it yaws to the left or to the right. The rudder controls
the yaw axis.
Z-Bend:
The wire ends of pushrods have Z-shaped bends
which attach to the servo.
Summary of Contents for Extra Easy XE2
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