Autogyros Flettner ship, a schooner that derives its thrust using the Magnus effect Flettner airplane, an airplane that derives its lift using the Magnus effect Flettner Fl 184 helicopter-gyroplane hybrid Flettner Fl 185 helicopter Flettner Fl 265 helicopter Flettner Fl 282 "Kolibri" helicopter Flettner ventilator Gyrodynes and Heliplanes Charles Kaman