Vertical takeoff and landing aircraft

A vertical takeoff and landing aircraft, comprising:

• an aircraft;
• a propulsion propeller that propels the aircraft in an advance direction;
• two or more rotors for vertical climb and descent that are disposed on each a right side and a left side of the aircraft in front-rear direction, each include a plurality of blades, and rotate in a predetermined rotation direction to generate lift;
• a speed sensor configured to acquire a flight speed of the aircraft during forward flight;
• a storage device configured to store, in advance, first data indicating a relationship between an effective lift-to-drag ratio of each of the rotors and an advance ratio, the advance ratio representing a ratio of the flight speed to a blade tip speed of each of the rotors;
• and
• a controller configured to
• based on the flight speed acquired by the speed sensor and the stored first data, calculate a rotational speed of each of the rotors to obtain an advance ratio at which the effective lift-to-drag ratio of the rotor is a threshold or more,
• calculate a pitch angle of the blade, in which lift necessary for the rotor is generated. using the calculated rotational speed of the rotor, and
• control the rotational speed of each of the rotors and the pitch angle of the blade of each of the rotors thereof according to the calculated rotational speed of the rotor and the calculated pitch angle of the blade.