The front half rectifier main cylinder is made of aluminum alloy ,which has high strength and is not easy to deform,so as to avoid the blade scratchig the inner wall of the main cylinder. The front half rectifier main cylinder can be changed later to upgrade the rectifier port with larger horn diameter to meet the needs of FRP model aircraft products.There is only 0.5mm gap between the blade and the main cylinder inside wall ,so S-EDF has high efficiency.

S-EDF semimetallic-Electric ducted fan series products,taking into account the toughness of plastic materials and the steeliness of metal materials,overcome many shortcomings of the above two materials.