30
Polyhedral Wing: A wing that has dihedral in three
different points on the wing. The Whisper utilizes a
polyhedral wing.
Pushrods: Connect between the control surface and
the servo. Transfers the movement of the servo to the
control surface.
Pushrod Housing: A tube that is usually nylon. The
pushrod wire runs through the housing.
Receiver: The part of the radio system that receives
the signals from the transmitter.
Rudder: The rudder is the control surface on the
back of the airplane that moves right and left. This
works with the polyhedral wing to turn the airplane.
Servo: The part of the radio system that produces
the movement necessary to move the control surfaces.
The servo includes a small motor, gears and a circuit
board to function.
Servo Arm: Connects to the servo, the servo arm
allows the pushrod to connect to the servo.
Servo Reversing: An option on most all new ra-
dios, servo reversing allows you to change the di-
rection a servo rotates by just flipping a switch on
the transmitter.
Servo Tray: Usually made out of plywood, the servo
tray is the mounting base for the servos.
Stall Speed: The speed at which air stops moving
fast enough over the surface of a wing to keep the
airplane flying.
Thermal: Simply put, a column of warm or hot air
that rises. Birds and glider pilots enjoy flying in
thermals. Airplanes like the Whisper are specifically
designed to fly in thermals.
Threaded Pushrod: A length of wire that has threads
cut into one end of it. See Pushrods.
Transmitter: The part of the radio system that you
control. It transmits the control inputs to the receiver,
which transfers that information to the servos.
Trim Tab: A sliding tab on the transmitter that al-
lows you make small adjustments to the control sur-
faces from the transmitter.
Vertical Stabilizer: Mounted on the rear of the air-
plane, it works with the rudder to turn the airplane. It
also gives the airplane vertical stability.
Wing Hold Down Dowels: Round pieces of hard-
wood dowels inserted through the fuselage at the front
and back of the wing. They are anchors for the rub-
ber bands that hold the wing onto the fuselage.
Wing Saddle: The portion of the fuselage where the
wing mounts on to.
NOTES
____________________________________________
___________________________________________
_____________________________________________
____________________________________________
_____________________________________________
____________________________________________
____________________________________________
___________________________________________
_____________________________________________
____________________________________________
_____________________________________________
____________________________________________
____________________________________________
___________________________________________
_____________________________________________
____________________________________________
_____________________________________________
____________________________________________
____________________________________________
___________________________________________
_____________________________________________
____________________________________________
_____________________________________________
____________________________________________
____________________________________________
___________________________________________
_____________________________________________
____________________________________________
_____________________________________________
____________________________________________
____________________________________________
___________________________________________
_____________________________________________
____________________________________________
_____________________________________________
____________________________________________
____________________________________________
