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https://viterbischool.usc.edu/news/2021/07/electrical-propulsion-the-future-of-sustainable-aviation/blownflap4s_mod/ blownflap4s_mod - USC Viterbi | School of Engineering Jul 27, 2021 - Illustration of blown lift technology. As shown on the right, the flap deflection during takeoff and landing redirects the propeller jet downward and thus... school ofmoduscviterbiengineering