AIRCRAFT WITH FLAPPING WINGS (BEETLE CRAFT) Russian patent published in 2015 - IPC B64C33/02 B64C11/04 

FIELD: aircraft engineering.

SUBSTANCE: aircraft comprises fuselage with cockpit, support wheels, wings rigidly secured to fuselage, wing ailerons, fin and stabiliser with rudders and elevators secured at fuselage tail. Aircraft is equipped with multiblade propeller with flapping blades driven by crank gear provided with two crankshafts fitted one in the other. Cranks of auxiliary timing crankshaft are fitted at 30 degrees of at 0 to 180 degrees relative to the primary crankshaft. Screw blades are articulated by wide ends with main crankshaft cranks. Blade turn levers are articulated by one end with propeller blade with ends. Con-rods are articulated by one end with the blade turn levers and, by other end, with auxiliary timing shaft cranks. The latter are fitted at 30 degrees of at 0 to 180 degrees relative to the primary crankshaft.

EFFECT: decreased takeoff-landing run and power saving.

2 cl, 2 dwg