An overview, video inspection, and short explanation of some of the slotted flap mods I have made to several of my RC aircraft. There is no sound, you dont need to hear me droning on. You can figure out whats happening from the video. If you have ?s, please ask. The link for NACA Technical Report 664 is below. Its an old report, but aerodynamic principles do not change. NACA was the predecessor to NASA. I bet those engineers had a blast researching all these issues. https://ntrs.nasa.gov/search.jsp?R=19930091739 or just use your favorite search engine and find it Download the report and get started on your own mods! The final installation illustrated is mine for the Sig Kadet Senior. Big flaps needed on a big Sig Kadet Senior? Of course not! But they sure do make it even more fun to fly! How slow can you go?
Slotted Flaps for several RC aircraft