(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.