Aileron : Located on the trailing edge of the main wing, it is used to control movement about the roll axis.

Airfoil : The shape of the wing when looking at it from the side.

AMA : Academy of Model Aeronautics, the world's largest sport aviation organization. Publishes Model Aviation magazine.

Angle of Attack (AoA) : The angle of the wing relative to the oncoming air.

ARF : Almost Ready to Fly. An ARF kit is pre-assembled and requires little assembly and installation of mechanical parts such as the engine, receiver, servos, and transmitter.

Center of Gravity (CG) : The balancing point of an airplane.

Channel : The frequency number that the transmitter is operating on. By law, radio frequencies for rc airplanes must be in the 72Mhz (72.010 72.990) band. Each separate frequency within the band is given unique channel number. RC airplanes flying on the same frequency channel will cause signal interference from the transmitter to the receiver.

Ch.# / Frequency Ch.# / Frequency Ch.# / Frequency
11 / 72.010 MHz 28 / 72.350 MHz 45 / 72.690 MHz
12 / 72.030 MHz 29 / 72.370 MHz 46 / 72.710 MHz
13 / 72.050 MHz 30 / 72.390 MHz 47 / 72.730 MHz
14 / 72.070 MHz 31 / 72.410 MHz 48 / 72.750 MHz
15 / 72.090 MHz 32 / 72.430 MHz 49 / 72.770 MHz
16 / 72.110 MHz 33 / 72.450 MHz 50 / 72.790 MHz
17 / 72.130 MHz 34 / 72.470 MHz 51 / 72.810 MHz
18 / 72.150 MHz 35 / 72.490 MHz 52 / 72.830 MHz
19 / 72.170 MHz 36 / 72.510 MHz 53 / 72.850 MHz
20 / 72.190 MHz 37 / 72.530 MHz 54 / 72.870 MHz
21 / 72.210 MHz 38 / 72.550 MHz 55 / 72.890 MHz
22 / 72.230 MHz 39 / 72.570 MHz 56 / 72.910 MHz
23 / 72.250 MHz 40 / 72.590 MHz 57 / 72.930 MHz
24 / 72.270 MHz 41 / 72.610 MHz 58 / 72.950 MHz
25 / 72.290 MHz 42 / 72.630 MHz 59 / 72.970 MHz
26 / 72.310 MHz 43 / 72.650 MHz 60 / 72.990 MHz
27 / 72.330 MHz 44 / 72.670 MHz

Channel : The number of controls an airplane has.

Chicken stick : A small stick used to start the engine. When starting the engine using your finger, it can also mean the rubber sleeve wrapped around your finger for protection from the propeller.

Chord : The distance between the leading edge and trailing edge.

Control surface : A moveable surface that is attatched to the trailing edges of an airplane and controls the 3D movement of the ariplane.

Cowl : The covering over the engine that reduces air resistance and allows a path for air to cool the engine.

Crystal : Electronic component located in the transmitter and the receiver, it determines the frequency the radio system is operating on.

Dead stick : To land without engine power.

Dihedral : The positive angle of the wing from true horizontal.

Elevator :Located on the trailing edge of the horizontal stabilizer, it flaps up or down to control movement about the pitch axis. Up is to climb, down is to dive.

Engine mount : Holds the engine in place inside the airplane. They are included in most ARF kits as either wooden rails or nylon or aluminum mounts.

Fin : See vertical stabilizer.

Flaps : A control surface located on the trailing edge of the wing between the ailerons and fuselage, it is used to increase lift or drag. Flaps are found on airplanes with at least 5-channels such as scale airplanes, but not trainers with 4-channels or less.

Fuselage : The body of an airplane.

Glow fuel : A mixture of methanol, nitro methane and castor oil and synthetic lubricants to protect the engine. Glow fuels are rated by the percentage of nitro content, the most common being 10%, 15%, and 25%.

Hand launch : One way of getting the airplane in the air without the need for a landing gear.

Horizontal stabilizer: the small, horizontal tail wing.

Landing gear : Also known by the British as the undercarriage, it is comprised of the wheel and wheel strut. It performs the function of supporting the weight of the airplane and allows for mobility while it is on the ground.

Leading edge (LE): The front edge of the wing, it is rounded to let air flow around it.

NiCd : Nickel Cadium. High powered rechargeable batteries used in transmitters and receivers.

Nitro Short for Nitromethane. Added in fuel for better performance. Glow fuel is rated by their nitro content in percentage terms.

Park flyer : Any electric airplane that can be safely flown in small flying area, such as a park, school yard, or parking lot.

Pitch : The axis of the airplane that is controlled by the elevator, it determines the altitude of the plane.

Pushrods : Connects the servos to the parts of the airplane that the servos move.

Receiver : Radio component located inside the airplane that takes signals from the transmitter and relays it to the proper servo.

Retracts : Short for retractable landing gear. Retracts fold into the airplane after lifting off to reduce air resistance and unfolds for landing.

Retract ready: An ARF airplane kit is retract ready if retracts can be installed without any adjustments being made to the aircraft.

Rudder : ocated on trailing edge of the vertical stabilizer, it flaps left or right to control movement about the yaw axis.

Scale airplane : Any rc airplane that is modeled after a real airplane.

Servo : : Converts the signals of the receiver to motion. Servos are labeled by their weight in grams. For example, a 9 G servo weighs 9 grams

Servo horn : Also known as a servo arm, they are attached to the output shaft on the servo.

Starter : Any device used in starting a engine. Can be electric(electric starter) or manual(chicken stick).

Throttle : The lever a pilot uses to control the speed of the engine. The lever controls the valves of the engine that regulates the amount of vaporized fuel entering the cylinder. Increased fuel leads to higher speeds.

Trailing edge (TE): The back edge of a wing, it is sharp so as to minimize drag.

Undercarriage : See landing gear.

Vertical stabilizer : The small, vertical tail wing. Also known as the vertical fin or just as fin.

Wing root : The edge part of the wing that is attatched to the fuselage.

Yaw : The axis of the airplane that is controlled by the rudder, it helps in stabilizing the airplane.