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Glossary of Terms - F

Flap

For Airplanes: 
Hinged control surface located at the trailing edge of the wing inboard of the ailerons. The Flaps are lowered to produce more aerodynamic lift from the wing, allowing a slower takeoff and landing speed. Flaps are often found on scale models, but usually not on basic trainers.

For Helicopters:
Flapping is an up-and-down motion of the main rotor blade's tip. With a "dual-damped" head (as used in the Kyosho Concept helicopters, for example) both blades are able to Flap independently. With "solid axle" heads (as used in the Hirobo Shuttle helicopters, among others), moving one blade up causes the other to move down. 

Flapping Head

This describes a type of rotor head in which the two blades are not connected directly. Each blade is independent of the other, usually resulting in a helicopter with smoother performance.

Flare

The point during the landing approach in which the pilot gives an increased amount of up elevator to smooth the touchdown of the airplane.

Flight Playback Gadget

A gadget that lets you control playback of flight recordings using mouse actions.

Flight Recording Gadget

A gadget that lets you make flight recordings using mouse actions.

Flutter

A phenomenon whereby the elevator or aileron control surface begins to oscillate violently in flight. This can sometimes cause the surface to break away from the aircraft and cause a crash. There are many reasons for this, but the most common are excessive hinge gap or excessive "slop" in the pushrod connections and control horns. If you ever hear a low-pitched buzzing sound, reduce throttle and land immediately.

Flybar Paddles

These are the short blades on the end of the flybar. Available in a variety of weights and airfoils, these paddles assist the main blades.

Four Stroke (Four Cycle)

Although a 4-stroke engine has less power than a 2-stroke engine of comparable size, there are advantages to 4-stroke engines. They do not require a muffler and are often quieter than most 2-strokes are with a muffler. They can swing a bigger prop than the same size 2-stroke engine. This is an asset in the large, slow-flying aerobatic and scale models where 4-stroke engines are usually mounted. Lastly, the fuel economy is better.

Frame Rate

Frame Rate is the number of times per second that RealFlight creates a different picture to display on your monitor. Frame rate is determined by the speed of your CPU and graphics card, and how many RealFlight options you turn on. This is not the same as refresh rate, which is the number of times per second that your monitor retraces an image on its screen.

Freestyle Event

An event where players decide on the rules. RealFlight G2 sees that each player gets a turn; it is the players' responsibility to judge the competition. Use this event when you have devised a group activity that requires every player to take a turn.

Full Edit

Allows you to edit every single parameter about the car. This is for advanced users or adventurous novices. You will not be able to race a "Full Edited" car in a "spec race."

This prevents racers from putting a .21 engine in a .10 truck race. If the Race Manager allows unlimited racing, then you can race a car that has been modified using the Full Edit feature.

Fuselage

This is the main part of the airplane that holds the wings and engine. Often thought of as the "body" of the airplane. This term is also used to refer to a "body" that might be used on helicopters.

Futaba

Maker of quality R/C products, including the USB InterLink controller that is shipped with RealFlight G2 and RealFlight G2 Lite.

Page last updated: October 08, 2015


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