What is RC EDF?

EDF Jets are the ultimate RC jets. They are without a doubt the fastest you can get with typical rc airplane flying. Obviously, this also means these jets have no propeller. Instead, the ducted fan houses a multibladed propeller, or fan. Sucking in air and spinning at high speeds, this allows for super powerful flying.

What is EDF turbine?

How an EDF Works. An Electric Ducted Fan is exactly what it says on the tin: it’s simply a fan, with multiple blades, that is mounted inside a duct or shrowd. They work by accelerating the air drawn into them creating thrust.

What is electric ducted fan?

About electric ducted fans Electric ducted fans (EDFs) are integrated propulsions systems consisting of a multi-bladed fan, a high-power-density electric motor, and a shroud surrounding the fan and motor.

How much thrust does a ducted fan produce?

Consequently, a ducted fan uses less power than an open rotor to produce the same thrust. Even with the much smaller radius of the fans, 6.94 lbs/HP is achieved in hover, nearly on par with conventional helicopters (6-10 lb/hp). Ducted Fan Design Code (DFDC) was used to design a highly efficient fan and duct system.

What size is EDF?

The heart of any EDF model is its motor and fan. The size of a fan unit is specified in terms of their internal diameter. There are a wide variety of fan units available in many sizes from tiny 25mm units up to 126mm or more. The most common classes of fan are probably 70mm, 90mm and 120mm.

How fast are RC Jets?

So in summary, how fast do RC planes go? Off the shelf RC Planes can do anything from 30 mph to 150 mph, depending on their design, construction, and type of engine. To achieve even higher speeds, specialist design, and engine types need to be used – the current RC Plane speed record is 465.544 mph ( 749.221 km/h).

Is a ducted fan a jet?

A ducted fan is an air moving arrangement whereby a mechanical fan, which is a type of propeller, is mounted within a cylindrical shroud or duct. A jet fan is a stationary ducted fan used to move air through buildings or tunnels.

How do you calculate thrust of a ducted fan?

The thrust of a rotor is CT⋅ρ⋅Area⋅tip speed2.

1. ρ = air density (1.225 kg m−3 at sea level).
2. Area = area of rotor disc (m2)
3. tip speed = the linear speed at the tip of the rotor = radial speed * radius.
4. CT = coefficient of thrust. ( is usually in the order of 0.02 to 0.05 for small rotors)

Do ducted fans produce more thrust?

By reducing propeller blade tip losses, the ducted fan is more efficient in producing thrust than a conventional propeller of similar diameter, especially at low speed and high static thrust level (airships, hovercraft). Ducted fans offer enhanced safety on the ground.

Are more blades on a propeller better?

In general, 2-blade propellers are slightly more efficient. If these factors are held constant, the efficiency of a propeller would decrease as more blades are added. However, as engine power increases, additional blades are generally required to efficiently utilize the increased power and produce thrust.