Use of rotating wings with the principle of self-rotation in electric vertical take-off and landing (EVTOL) aircraft

Abstract

The use of rotating wings with the principle of self-rotation in electric vertical take-off and landing (eVTOL) aircraft in order to take advantage of the battery power to cover longer distances more rapidly with safe landing of the aircraft in the event of damage due to the temporary lift force generated by the rotating wings as a result of the moment of inertia, and to reduce the air resistance and provide for passenger comfort.

Description

[0001] 1: Title of the invention:

[0002] Use of rotating wings with the principle of auto-rotation in electric vertical take-off and landing (EVTOL) aircraft 2: The technical field to which the invention belongs:

[0003] This invention belongs to the field of aviation

[0004] 3: State of the prior art: In this field, we know a two-seater electric flying car "X-Peng" with vertical takeoff, equipped with four fixed electric motors. Each motor has two propellers designed for low-altitude flight, capable of flying for a maximum duration of 35 minutes, with a maximum speed of 135 km / h. It is expected to enter production by 2024, at a price of $139,200.00.

[0005] Among its most important drawbacks:

[0006] However, this flying car quickly exhausts energy because it relies entirely on the four motors to provide lifting force as well as propulsion. Tilting the aircraft forward as it moves forward is necessary because the motors cannot adjust the angle of inclination, which generates increased air resistance, resulting in reduced speed and higher energy consumption. Moreover, passengers are uncomfortable because they have to remain bent over throughout the flight.

[0007] Furthermore, in the event of engine failure, the aircraft automatically crashes, making it less safe. Its speed is relatively slow due to the use of most of the engine power to lift the aircraft, resulting in reduced thrust. i 4: The purpose of the invention: The purpose of this invention is to overcome the above-mentioned defects, and to make this possible, effective additions have been proposed for the vehicle, which are suitable for overcoming what has been mentioned.

[0008] First of all, the addition of rotating wings on top of the vehicle, which is characterized by the principle of self-rotation resulting from the passage of air through the wing blades during the movement of the aircraft, thus generating the lifting force, which is the principle that characterizes gyrocopters.

[0009] This is complemented by a device for changing the tilt angle of the electric motors to control the transition between lifting and propulsion forces. All of this aims to improve safety, comfort, energy efficiency, and, above all, increase the aircraft's relative speed.

[0010] The main objectives of this invention:

[0011] - Harness battery power to travel longer distances faster

[0012] - Safe landing of the aircraft in case of damage due to the temporary lift force provided by the rotating wings due to the moment of inertia.

[0013] -Reduce air resistance and provide comfort to passengers.

[0014] 5 - List of drawings and figures:

[0015] The invention will be better understood with the aid of the following description with reference to the attached diagram

[0016] Figure 1: A three-dimensional perspective of the flying vehicle in its static state Figure 2: The device for changing the angle of inclination of the motors

[0017] Figure 3: It explains the position of the rotating wings on the rotating head and the elements responsible for controlling the rotor angle.

[0018] Figure 1 shows the aircraft in its static state. The cockpit 1 is equipped with four seats with controls and 2 batteries at the rear with space for luggage. The aircraft is surrounded by four engines 3 each engine drives two pairs of propellers the engines are mounted directly to the device responsible for changing the angle of inclination 8 which in turn is connected to the structure by means of a carrier which is covered by fixed wings 9 to better use the force of the wind and gain additional lifting force.

[0019] The vehicle is topped with 6 rotating wings, responsible for generating lift as the aircraft moves. Carried by rotor head 5, it is piloted by two electric thrusters from the helm station.

[0020] Figure 2 shows: A device for changing the angle of inclination of electric motors. Its operating principle is as follows: The fan 1 is rotated by the electric motor 2 carried on the support 3. In the middle of the support is mounted a rotating shaft. Inside the cavity of the table 6 using rollers to facilitate the inclination of the motor. In the middle of the two cavities is the traction arm 4 fixed to the serrations of the support 3. The arm is retracted by an electric impulse 5 controlled directly from the bar. The device is entirely installed in the chassis 7 Figure 3 details the rotors and the elements that ensure their control: The blades of the rotors (1) are supported by the support (2), fixed installed in the drum (3) at its center of gravity, and rotate around the axis of rotation of the rotor (4) thanks to rolling mechanisms.The rotor head is composed of various elements, including the tilt cube (5), allowing forward, backward and lateral tilting movement of the rotor. This movement is subject to direct control by two electric actuators driven from the control unit, allowing complete adjustment of the tilt angle of the aircraft on the structure (7) located at the top of the aerial vehicle.

[0021] 6- Presentation of the essence of the invention:

[0022] The aircraft, in its static state, has a passenger cabin equipped with four seats, accompanied by control and air navigation devices, in addition to the batteries located at the rear, with a space dedicated to luggage.

[0023] The aircraft's configuration includes four engines, two on each side, each driving two propellers. These engines are directly attached to the tilt angle variation device. This device is in turn connected to the structure through a support, enveloped by fixed wings aimed at maximizing the use of wind power and obtaining additional lifting force. The vehicle is topped with rotating wings, responsible for generating lift as the aircraft moves. They are controlled by two electric motors connected from the rudder to the rotary head, which carries the rotating wings.

[0024] 7- Method of using the invention: Using the vehicle requires a certain level of experience and training, as it differs from flying on ordinary airplanes or helicopters. The most important steps required for flight are: 1. Pre-flight inspection: This step involves a careful inspection of the vehicle, including checking the charge level of the batteries, rotating blades and control instruments.

[0025] 2. Takeoff: To take off with the vehicle, the pilot adjusts the tilt angle of the electric motors to 90 degrees to obtain a vertical takeoff configuration. Then, the pilot applies the power required for the takeoff operation.

[0026] 3. Progression: After the vehicle takes off, the pilot adjusts the angle of the motors accordingly (20 to 30 degrees), so that the vehicle begins to move forward.

[0027] 4. Level Flight: As the vehicle moves forward, the rotor blades immediately begin to self-rotate under the effect of the wind resulting from the aircraft's forward motion. The rotation speed of the rotor blades increases as the forward speed of the vehicle increases. The angle of inclination of the electric motors to match the rotations of the rotor blades.

[0028] If the rotor wings reach the number of revolutions necessary to carry the aircraft, the tilt angle of the engines will be 180 degrees, and thus the engines will be used only for propulsive force instead of lifting the aircraft.

[0029] It then relies entirely on the rotating wings to generate lift as long as the propulsion force of the four engines remains in its inclined state. Landing: This type of aerial vehicle does not require a runway or takeoff area. Once the landing site is determined, the pilot readjusts the engine bank angles to 90 degrees while reducing power appropriately, thus allowing for a controlled and safe landing. In the event of engine failure, the aircraft can perform a glide landing, taking advantage of the autorotation of its rotating propellers.

Claims

Claims: 1- Use of rotating wings with the principle of auto-rotation in electric aircraft with vertical take-off and landing. 2- A flying vehicle with rotating wings composed of four electric motors on its sides to generate lift, capable of modifying the angle of inclination in order to control the transition between propulsion and lift, in addition to a rotating propeller at the top of the vehicle, which is characterized by the principle of self-rotation thanks to the air produced by the aircraft during its flight. 3- According to claims 1 and 2, the invention is characterized by a refined design which takes into account aerodynamic conditions in order to reduce air resistance as much as possible, in addition to being contemporary and innovative. 4- According to claims 1 to 3, the four engines have the ability to modify their tilt angle, thus providing the possibility of controlling the propulsion vector between the lift force and the thrust force by means of a tilt angle adjustment device. 5- According to claims 1 to 4, the rotary propeller is distinguished by its principle of autonomous rotation, based on the exploitation of the force of the wind during the movement of the vehicle to rotate the propeller, thus generating the lift force. 6- According to claims 1 to 6, the invention exploits the space surrounding the engine mount by adding fixed wings to gain additional lift force.

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