The fan in the duct is a part of the spinning fan or a propeller with more blades carefully designed to be positioned according to the shape of the duct. Ducted fan RC jets have the ability to create more thrust levels. Ducted fans are most suited for scale models as they provide a real experience of flying due to their ability to imitate the facade and sounds of jet engines. It sounds even better when jets reach their full momentum speed. However, the number of fan units to be installed remains to be a barrier for a duct remote control jet as they can only lodge a partial selection of varying fan units.
A duct fan operates as a fixed stabilizer. Ducted fans are normally designed to match the design and combination of the aircraft. Moreover, software can be used by the designer to choose the required propeller pitch and length. Most propellers may not fit the exact design of the aircraft because they are usually oversized when ordered. However, these propellers can be altered or trimmed to meet the desired design of the RPM. Just as the propeller, the blade pitch and the length has to be taken into consideration. Not to forget the in and out diameter of the duct which are also equally important. The tip clearance of he fan blade is very crucial for the efficient performance of the duct, therefore, the trimming down of the fan blades may not necessarily increase the engine revolutions and efficiency.
Not as powerful as jet turbines, ducted fan RC jets, however, remain to be a viable alternative for enthusiasts. The climb rate and cruise speed tend to improve with every manufacture of a ducted fan jet but the take off distance remains the same.
Electric or gas powered ducted fan RC jets offer excellent and memorable flying experience if you have a zest for speed and thrill. In recent years, ducted fan jets have been met with low demand. With the advent of turbine jets, ducted fans have supposedly lost their popularity. However, ducted fan jets remain to be a viable product for consumers who are tight on their budgets and they want to be in the jet scene market.