A very steep climbing turn where the airplane makes a 180° change of direction.

The number of functions your radio can control. Example: A 7-channel radio has 7 available servo slots used for separate control surfaces or switches. These channels can...

A hand-held stick used to "flip start" a model airplane engine.

The "depth" of the wing, its distance from leading edge to trailing edge. One of the components used to determine wing area. May vary from root to tip.

The Clevis is a small fastener at the end of a pushrod, usually made from nylon or metal, which connects the pushrod to the control horn. Clevises may frequently be refer...

A slotted jaw that allows a limited range of bits to be placed in a tool such as a router, moto-tool, or pin vice.

This effect is the bending of the rotor or propeller blades when stressed.

Any linkage transmitting servo movement to a control surface.

A movable surface such as elevator, rudder, and aileron.

A Conventional Tail is one with the stabilizer mounted directly on the fuselage and is the usual configuration of an aircraft. These are the simplest to construct and see...

The covering of an aircraft is the skin which is applied to the airframe, closing it in. On R/C aircraft, it is commonly a fabric or plastic film which is heat applied wi...

The large molded fairing around an engine. It serves two purposes: It helps the airflow go smoothly around the front of the airplane and also provides a proper path for c...

When an aircraft flies at a sideways angle relative to the direction being traveled. Can be caused by a crosswind or may be flown intentionally to reduce altitude without...

See "Butterfly".

A stabilizer that is mounted partway up the fin. This is a compromise between the conventional tail and the T-tail, combining some of the major advantages of both.

(aka Datum Line) A reference line from which measurements are taken.

Slang term for a landing without engine power. An example: "I ran out of fuel at 50 feet and had to dead stick".

The angular difference of the wing incidence and the horizontal stabilizer incidence.

Delta Wing aircraft have one large wing with a sharply swept leading edge and a straight trailing edge. The result is a wing that looks like the Greek letter Delta (Δ). T...

A device used to spoil the trim of an aircraft and cause it to sink. A dethermalizer is most commonly used on free-flight endurance models to prevent them from flying awa...

Or pre-ignition is a potentially engine-damaging condition in which part of the fuel/air mixture ignites before the piston is at top dead center (TDC). Pre-ignition is a...

Ailerons that are set up to deflect more in the upward direction than downward are said to have Differential Throw. The purpose is to counteract Adverse Yaw.

The upward inclination of an aircraft wing in relation to the lateral axis. A wing with dihedral is more stable and will tend to level itself from banked flight due to th...

3rd generation Frequency Hopping Spektrum 2.4 gHz protocol that offers superior radio frequency link security and the ability for over 100 systems to operate interference...

This radio feature permits you to check servo operation without broadcasting a radio signal. A cable connects the transmitter to the receiver. Direct servo control is ver...

Term describing the shape of the rotary wing or propeller formed by the spinning blades.

A second piece of balsa or plywood added to the fuselage side to enhance strength.

Downward angle of the engine relative to the centerline of the airplane. Down thrust helps overcome the normal climbing tendency caused by the torque of the engine.

Air resistance that slows the model.

Digital Spectrum Modulation; DSM is the 2.4GHz technology that makes Spektrum possible.

The second generation of Digital Spread Modulation. DSM2 offers significantly reduced latency and a faster response time than any brand of 27, 75, or 72MHz PCM system.

Spektrum surface "Racing" protocol that delivers reduced latency, superior Radio Frequency link security, and the ability for over 100 systems to operate interf...

3rd generation Frequency Hopping Spektrum 2.4 gHz protocol that offers superior radio frequency link security and the ability for over 100 systems to operate interference...

Direct Sequence Spread Spectrum. DSSS broadcasts on the 2.4GHz frequency band and generates a wide signal on a single frequency.

A dual conversion receiver filters the incoming radio signal from the transmitter through two separate and distinct electronic filters. This “double filtering” helps the...

Spektrum designed architecture that provides increased Radio Frequency link diversity. This combined with DSM2 is what makes the full range system possible.

Radio function used to adjust control sensitivity.

A hand-held electric motor used for starting a model airplane engine. Usually powered by a 12-volt battery.

The pitch-control surface.

The vertical and horizontal tail surfaces of an airplane.

This radio feature adjusts the length of servo travel in one direction (a single channel will have adjustments for two endpoints). If your plane rolls faster one way than...

A two-part resin/hardener glue that is extremely strong. It is generally available in 6 and 30-minute formulas. Used for critical points in the aircraft where high streng...

The unit that controls the rpm of an electric motor.

Device used to read the battery voltage of the on-board battery pack or transmitter battery pack under load.

This radio function allows the modeler to adjust the sensitivity of the control towards the center. This will make the small stick motions very precise, while longer stic...

A Dubro product name generically used to describe a fitting that is attached to a control horn or servo arm by means of a pin and a snap connector. A wire or cable pushro...

The term used to describe data that does not reach the receiver. Dual Link minimizes this possibility.

A PCM function which moves servos to a pre-programmed position if transmitter signal is lost or corrupted.

A component used to create a streamlined intersection between two or more other components or to cover a component to reduce drag.

Frequency Hopping Spread Spectrum. These systems usually transmit a narrow band signal and rapidly jump through a fixed set of frequencies, spending a few milliseconds on...