How do you increase the thrust of an EDF?
By decreasing the exhaust exit diameter the airspeed rushing out will increase. This may also increase the maximum speed of your model. By increasing the exhaust exit diameter, additional thrust may be gained.
What is a good thrust to weight ratio for RC planes?
The power/weight ratio can be expressed as follows: 0.5: 1 means that the thrust is half the weight, with this in mind, for gliders or light and slow-flying model aircraft, a ratio of between 0.3: 1 to 0.4: 1 on trainer models from 0.5: 1 to 0.8: 1 and on fast models from 0.8: 1 onwards.
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 EDF propulsion?
Abstract. Electric Ducted Fan (EDF) is an electric propulsion consist of duct, fan and electric motor with main power source is from battery which generates compression air for thrust. EDF is used as an alternative propulsion for high speed UAV especially for target UAV or “bomb” controlled UAV.
How do you calculate thrust/weight ratio?
The thrust-to-weight ratio is calculated by dividing the thrust (in SI units – in newtons) by the weight (in newtons) of the engine or vehicle. Note that the thrust can also be measured in pound-force (lbf), provided the weight is measured in pounds (lb).
How do you calculate thrust for an aircraft?
- Thrust is the force which moves an aircraft through the air. Thrust is generated by the engines of the airplane.
- F = ((m * V)2 – (m * V)1) / (t2 – t1)
- F = m * a.
- m dot = r * V * A.
- F = (m dot * V)e – (m dot * V)0.
- F = (m dot * V)e – (m dot * V)0 + (pe – p0) * Ae.
How does RC EDF work?
They work by accelerating the air drawn into them creating thrust. The ones we use in RC airplanes are usually small (with 30mm-90mm fans), powered by high KV brushless motors, and spin extremely quickly. They’re clean and use no fuel, but this means there’s no expansion of the air due to heat.