LT6771B - Interceptor drone with net launcher - Google Patents

Abstract

The drone, equipped with three or more rotors and a net launcher, is designed to mechanically block light unmanned aerial vehicles. The ratio between the drone's high engine thrust and low mass is its competitive advantage. These parameters allow it to fly fast. The net is launched in the drone rotors' thrust direction. This approach allows attacking the target, using the kinetic energy of a drone flying at full velocity. To launch the net, the rotors' thrust is used. During the attack, the rotors speed up to full rpm and are controllably detached from the drone. The kinetic energy of the rotors is converted into thrust while the propellers continue rotating by inertia. The net corners are attached to the rotors. The rotors with engines develop sufficient energy and are heavy enough to spread a net of a large area. This net size enhances the likelihood of catching the target.

Description

The invention relates to means of attack and defense for combating light drones.

U.S. Pat. No. 1,000,556 describes a drone that fires a net on another drone. Additional weights are attached to the ends of the net. The additional weights must be of sufficient mass to allow their inertia to unfold the net. The grid exhaust uses an internal energy source for this mechanism, which also adds extra weight to the total mass of the drone. The extra weight worsens the drone’s energy to weight ratio, making the drone slower and harder to maneuver. The net ejection mechanism is mounted as an additional unit behind the drone housing. As a result, the aerodynamics of the drone deteriorate. The net ejection vector does not coincide with the center of mass of the drone. When the net is fired, the impulse of reactive force unbalances the drone.

The invention relates to a drone with three or more rotors and a net unfolding mechanism for the mechanical interlocking of light drones. The competitive advantage is the ratio between high motor traction and low drone mass. This allows you to fly fast. The net is extended in the same direction as the traction of the drone motors. This allows you to attack the target using the kinetic energy that a drone flying at high speed has. Rotor traction is used to spread the net. During the attack, the rotors are rotated to maximum speed and separated from the drone by a controlled mechanism. The kinetic energy of the rotors is converted to traction until the propellers rotate from inertia. The corners of the net have a connection to the rotors. Drone rotors with motors have a lot of energy and mass, for spreading a large area of the network. This increases the likelihood of the target being hooked.

Description of submitted images:

Figure 1 shows a schematic of a drone fighter. Marked positions: 1 drone housing contour; 2 - rotor and motor circuit; 3 - network; 4 - net securing strap; 5 - contacts; 6 - insulator; 7 - support; 8 - clip; 9 - lever; 10 - tension, spring; 11 - rubber cable; 12 - parachute; 13 - parachute cover; 14 - compression spring; 15 - parachute lid lock; 16 - lever locks; 17 servomechanism, -18 - video camera; 19 - distance sensor; 20 - center of mass; 21 - aerodynamic pressure center; 22 - siren.

Figure 2 shows a drone fighter with an expanded net and a parachute. Marked positions: T-drone; 2 - rotor; 3 - network; 12 - parachute.

Example of realization of the invention. Figure 1 shows a side view diagram of a drone with four rotors. The mechanical connection of each rotor to the drone housing consists of a controlled separation mechanism. On the left side of the circuit, the rotor (2) and the net (3) are attached to the drone (1). On the right side of the circuit, the rotor (2) and the net (3) are separated from the drone (1). The function of the mechanical connection of the rotors (2) to the drone housing (1) is performed by trapezoidal contacts (5). The contacts (5) are clamped between the support (7) and the clamp (8). The mechanical connection (5, 7, 8) of each rotor is pressed with a lever (9). Power for the rotor motors is provided through a mechanical connection to the drone housing. The support (7) and the clamp (8) act as electrical contacts. Power is supplied to the motor of the rotor (2) via contacts (5) which are attached to the insulator (6). The net (3) is divided into four parts and attached to the drone housing by means of straps (4). The drone body (1) and the net (3) are connected to the parachute (12). The parachute is placed under the parachute cover (13) with a lock (15). The drone is pointed at the target according to the image from the camera (18). The distance sensor (19) measures the distance to the target. When the optimum distance is reached, the rotors (2) are rotated to maximum speed. The parachute cover lock (15) and the lever locks (16) are connected to the servomechanism (17). The servomechanism (17) rotates the lever latch (16) and lock (15) at a 30-degree angle to release the parachute cover (13). The parachute cover is lowered by the spring (14). The servomechanism (17) rotates the lever lock (16) 60 degrees and releases the levers (9). Each lever (9) has a sliding connection to the tension spring (10). The spring (10) rotates the lever (9) until the connection between the lever and the spring is broken. the tensioned rubber cable (11) retracts the lever (9) and spring (10) back into the drone housing (1). At the edge of the lever (9) is a knife that cuts the net fastening belt (4). The released net (3) is left behind the drone housing. A clamp (8) is attached to the end of the lever (9), which secures and pushes out the contacts (5). After separation, the rotors (2) face the drone (1). The center of mass of the drone (20) is at the front with respect to the center of aerodynamic pressure (21) to ensure stable flight without rotors. The corners of the net (3) have a connection to the rotors (2). The rotors stretch the grid (Fig. 2). The network (3) blocks the target. The target and drone fighter go down. The fall is stopped by a parachute (12). The siren (22) warns people about a falling object. An undamaged drone fighter is reused after assembly.

One possible scenario for the use of a drone fighter. The drone fighter is ready for flight and stored in a container with an openable lid. Several containers with drones are mounted on the vehicle. The vehicle is on duty in the protected area. Information about the coordinates of the target comes from the airspace observation tower. A drone fighter captures a target at a greater distance than firearms or radio noise generators can reach.

Claims (9)

Definition of the invention 1. A drone fighter with a net spreading mechanism having three or more rotors, characterized in that the corners of the net have a connection to the rotors; the mechanical connection of each rotor to the drone housing consists of a controlled separation mechanism. A drone fighter with a net spreading mechanism according to claim 1, characterized in that the mechanical connection of the rotor to the drone housing is pressed by a lever. 3. A drone fighter with a net spreading mechanism according to claim 1, characterized in that the mechanical connection of the rotor to the drone housing is trapezoidal. 4. A drone fighter with a net spreading mechanism according to claim 1, characterized in that the power to the rotor motors is provided through a mechanical connection to the drone housing. 5. A drone fighter with a net spreading mechanism according to claims 1-2, characterized in that the lever is connected to a tension spring via a sliding connection. 6. A drone fighter with a net unfolding mechanism according to claims 1-2, characterized in that the net is attached to the drone body by means of a belt; there is a knife for cutting the belt on the edge of the lever. 7. A drone fighter with a net spreading mechanism according to claims 1-2, characterized in that the lever locks are connected to the servo mechanism. 8. A drone fighter with a net unfolding mechanism according to claim 1, characterized in that the drone body and the net are connected to a parachute; the parachute cover lock is connected to the servomechanism. 9. A drone fighter with a net unfolding mechanism according to claim 1, characterized in that the center of mass of the drone is forward of the center of aerodynamic pressure.