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Adjustable Servo Connector:
Provides a quick and
easy method to secure the pushrod wire to the servo horn.
A set screw in the connector makes adjusting the pushrod
very easy.
Battery Charger:
Connects to a 12 volt source and
charges the flight battery to full capacity.
Control Stick:
The stick on the transmitter that you
move. One stick moves both right and left and up and
down to control the airplane.
Control Horn:
Mounted to the control surface, it gives
an attachment point for the Z-Bend in the pushrod wire.
Control Surfaces:
The surfaces on the tail assembly
that pivot to make the airplane turn right and left and pitch
up and down.
Dihedral:
The upward angle of each wing panel. Dihe-
dral creates more stability that makes learning to fly easier.
Flight Battery:
Comprised of individual battery cells,
the flight battery is mounted inside the airplane and pow-
ers the motor, receiver, ESC and servos.
Horizontal Tail:
The wing-like surface on the back of
the airplane that is parallel with the wing. The horizontal
tail provides stability to the airplane.
Motor Controller (ESC):
The motor controller con-
trols the speed of the motor. The Thermalaire's motor
controller is proportional with the throttle lever so you
can reduce or increase speed smoothly.
Polyhedral Wing:
A wing design that utilizes two sepa-
rate points of dihedral. Polyhedral wings have a flat center
panel and two outer panels with dihedral. The polyhedral
wing design is perfect for beginners because it makes the
airplane very stable and easy to control.
Pushrods:
They connect the control surfaces to the
servos, transferring the movement of the servos directly
to the control surfaces.
Receiver:
The part of the radio system that receives the
signals from the transmitter.
Servo:
The part of the radio system that produces the
movement necessary to move the control surface. The
servo includes a small motor, gears and a circuit board.
Servo Horn:
Made out of plastic or nylon, it attaches to
the servo output shaft. The pushrod and/or servo connec-
tor are then attached to the servo horn.
Stall Speed:
The speed at which air stops moving fast
enough over the surface of the wing to keep the airplane
flying.
Transmitter:
The part of the radio system that you
control. It transmits the control inputs to the receiver,
which transfers that information to the servo and mo-
tor controller.
Trim Lever:
A sliding lever on the transmitter that
allows you to make small adjustments to the control
surfaces from the transmitter.
Vertical Tail:
The wing-like surface on the back of the
airplane that is perpendicular to the horizontal tail. The
vertical tail provides stability to the airplane.
Z-Bend:
A "Z Shaped" bend in pushrods that is used to
connect the pushrods to the control surfaces.
Section 10: Glossary of Terms