I plan on using the dle 55ra engine to produce 5hp at 8,500 rpm. I am using it in a paramotor, and to save space I am considering using a ducted propeller similar to the Fulcrum power pod. The duct intake would have to be directly behind my back, so I plan to add around 6 inches of space to allow air intake. The engine would be mounted on my back facing into the intake. Effectively, it would be a normal paramotor with a duct around the fan blades. My estimated duct wall clearance is 1 or less mm. I need to produce 15kg of thrust, so how would I design this fan? I considered using a heating duct, which is an 18-16 reducer. This would allow me to get some benefits of the thrust tube and would make it easy to have a front-mounted propeller. Would this propeller work? It is 18x7"
TLDR: Would my combination of propeller, duct and engine produce 30kg of thrust.
Thank you! P.S. Aviation stack exchange sent me here