A coaxial drone system with two propellers

Abstract

A coaxial drone system with twin propellers, consisting of: a frame that can accommodate all components of the system; a power source consisting of one or more batteries and configured to supply power to components of the system; a variety of sensors configured to collect real-time environmental data; a first and a second motor mounted on the frame in a coaxial configuration; a first propeller coupled to the first motor, the first motor configured to rotate the first propeller clockwise; a second propeller coupled to the second motor, the second motor configured to rotate the second propeller counterclockwise; at least one electronic speed controller that controls the power distribution from the power source to the first motor and the second motor; and a flight controller configured to: Receiving sensor data from the plurality of sensors; Process the sensor data to determine the flight conditions. to generate control signals based on the processed sensor data; and Transmit the control signals to the electronic speed controller to adjust the speeds of the first and second motors.

Description

FIELD OF THE INVENTIONThe present disclosure relates to a dual propeller coaxial drone system. More particularly, the present invention relates to a coaxial drone system having a dual propeller system and a contrarotating configuration.BACKGROUND OF THE INVENTIONConventional drones with a rotor suffer from inherent torque imbalance and require additional stabilization mechanisms that increase complexity and decrease efficiency. Moreover, while conventional quadrocopters are stable, they often require more space and consume more power because of their multirotor configurations.This coaxial drone invention overcomes these limitations by a dual-propeller innovative system with counter-rotating propellers. By arranging two propellers coaxially - one above the other, rotating in opposite directions - the system neutralizes the torque naturally and at the same time maintains the compact construction. This configuration obviates additional stabilization mechanisms while providing improved lifting efficiency and stability under adverse conditions. The design represents a significant advance in drone technology, particularly for applications requiring precise control in confined spaces or demanding environments.SUMMARY OF THE INVENTIONThe present disclosure relates to a dual propeller coaxial drone system. The present invention relates to a coaxial drone system having two counterrotating propellers mounted coaxially. The system consists of a frame with two brushless DC motors, each driving a propeller in opposite directions and controlled by an advanced flight controller and electronic speed controllers. The invention comprises a plurality of sensors for real-time flight data processing and stability control.The present disclosure is directed to providing a drone system with coaxial dual propellers. The system includes: a frame for receiving all system components; a power source including one or more batteries for powering the system components; a plurality of sensors for capturing real-time environmental data; first and second motors coaxially mounted to the frame; a first propeller coupled to the first motor for rotating the first propeller in a clockwise direction; a second propeller coupled to the second motor for rotating the second propeller in a counterclockwise direction; at least one electronic speed controller for controlling power distribution from the power source to the first and second motors; and a flight controller for receiving sensor data from the sensors, processing the same to determine flight conditions, generating control signals based on the processed sensor data, and transmitting the same to the electronic speed controller for adjusting the speeds of the first and second motors.An object of the present disclosure is to provide a dual propeller coaxial drone systemAnother object of the present disclosure is to provide a compact and efficient drone system that eliminates torque imbalance from counter-rotating propellers while maintaining stable flight characteristics.Another object of the present disclosure is to develop a modular drone platform that can adapt to different payload requirements while still providing optimal flight performance and stability.Another object of the present disclosure is to provide a smart flight control system that automatically adjusts to changing flight conditions and maintains stability in adverse environments.In order to further clarify the advantages and features of the present disclosure, the invention will be explained in more detail with reference to specific embodiments that are illustrated in the accompanying drawings. These drawings illustrate only typical embodiments of the invention and are therefore not to be considered as limiting the scope thereof. The invention will be described and explained in more detail with reference to the accompanying drawings.BRIEF DESCRIPTION OF THE FIGURESThese and other features, aspects, and advantages of the present disclosure will become more fully understood when the following detailed description is read with reference to the accompanying drawings, in which like characters represent like parts throughout. The following applies here: FIG. 1 shows a block diagram of a drone system based on a coaxial dual propeller according to an embodiment of the present disclosure; FIG. 2 is a block diagram of the dual propeller system of the proposed drone system according to an embodiment of the present disclosure; and FIG. 3 is diagrams illustrating the dual propeller system of the proposed drone system according to an embodiment of the present disclosure.Those skilled in the art will also appreciate that the elements in the drawings are shown for simplicity and are not necessarily to scale. For example, the flowcharts illustrate the method using the key steps to improve understanding of aspects of the present disclosure. In addition, regarding the construction of the apparatus, individual or multiple components of the apparatus may be represented by conventional symbols in the drawings. The drawings may only show the specific details relevant to understanding the embodiments of the present disclosure in order not to obscure the drawings with details readily apparent to those skilled in the art after the present description.DETAILED DESCRIPTION:In order to aid in the understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and will be described in an comprehensible manner. However, the scope of the invention is not limited thereby. Changes and further modifications of the illustrated system, as well as further applications of the principles of the invention, are possible, as would normally occur to a person skilled in the art.It will be understood by those skilled in the art that the foregoing general description and the following detailed description are exemplary and explanatory of the invention and are not intended to be limiting thereof.References throughout this specification to "one aspect," "another aspect," or similar language mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, the phrases "in one embodiment," "in another embodiment," and similar phrases in this specification may or may not refer to the same embodiment.The terms "comprises," "comprising," or other variations thereof are intended to cover a non-exclusive inclusion, such that a process or method comprising a list of steps may include not only those steps, but also other steps not expressly listed or inherent in that process or method. Likewise, the phrase "comprises... for" one or more devices, subsystems, elements, structures, or components does not exclude, without further limitations, the existence of other devices, subsystems, elements, structures, components, or additional devices, subsystems, elements, structures, or components.Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by one of ordinary skill in the art. The systems, methods, and examples provided herein are for illustrative purposes only and are not to be considered limiting.Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.FIG. 1 shows a block diagram of a drone system ( 100) based on a coaxial dual propeller according to an embodiment of the present disclosure.Referring to FIG. 1, the system (100) includes a frame (102) configured to receive all components of the system (100); a power source (104) including one or more batteries configured to power components of the system (100); a plurality of sensors (106) configured to acquire environmental data in real time; a first motor (108) and a second motor (110) mounted in a coaxial configuration on the frame (102); a first propeller (112) coupled to the first motor (108), the first motor (108) configured to rotate the first propeller (112) clockwise; a second propeller (114) coupled to the second motor (110), the second motor (110) configured to rotate the second propeller (114) counterclockwise; at least one electronic speed controller (116) configured to control power distribution from the power source (104) to the first motor (108) and the second motor (110); and a flight controller (118) configured to receive sensor data from the plurality of sensors (106); process the sensor data to determine flight conditions; generate control signals based on the processed sensor data; and transmit the control signals to the electronic speed controller (116) to adjust the speeds of the first motor (108) and the second motor (110).In one embodiment, the plurality of sensors (106) include: an inertial measurement unit configured to acquire orientation data; a barometer configured to measure altitude data; and a GPS module configured to provide location data.In one embodiment, the power source (104) comprises one or more lithium polymer batteries, wherein the battery(s) are configured to provide a voltage between 11.1 V and 14.8 V.In one embodiment, the flight controller (118) is further configured to execute stabilization algorithms using the sensor data, calculate optimal engine speeds to maintain flight stability, and adjust the control signals in real-time based on changing flight conditions.In one embodiment, the first propeller (112) is positioned a predetermined distance above the second propeller (114), the predetermined distance being optimized to minimize aerodynamic interference between the first propeller (112) and the second propeller (114).In one embodiment, the system (100) also includes a modular payload interface (120) configured to establish mechanical coupling with different payload modules and provide power and data connectivity to the coupled payload modules.In one embodiment, the frame (102) includes: a central hub in which the flight controller (118) and the electronic speed controller (116) are located; motor attachment points configured to ensure precise coaxial alignment of the first motor (108) and the second motor (110); and lightweight composite structural members.In one embodiment, the electronic speed regulator (116) includes: a first channel associated with the first motor; a second channel associated with the second motor; and processing circuitry configured to generate pulse width modulation signals for precise motor speed regulation.In one embodiment, the flight controller (118) is further configured to monitor the battery voltage, calculate the remaining flight time based on the current power consumption, initiate automatic landings when the battery level falls below a predetermined threshold, and maintain flight stability during the automatic landings.In one embodiment, the first motor (108) and the second motor (110) are brushless DC motors, each motor equipped with independent temperature monitoring and overload protection.The present invention relates to a coaxial drone system with a dual propeller system in opposite directions. The coaxial drone system represents an advanced approach to the development of unmanned aerial vehicles and is based on a dual propeller configuration mounted on a vertical axis. The system is based on a sophisticated integration of mechanical and electronic components.The core piece is two brushless DC motors coaxially mounted on the frame. Each motor drives a propeller in the opposite direction - the upper propeller rotates clockwise, the lower one counter-clockwise. This configuration effectively neutralizes the torque in flight. The power is supplied via a lithium polymer battery with a typical operating voltage between 11.1 V and 14.8 V, which feeds electronic speed regulators. These controllers accurately regulate the power distribution to both motors based on the inputs from the flight controller. The flight controller acts as the brain of the system and continuously processes data from multiple sensors including an inertial measurement unit, a barometer, and a GPS module. This real-time data processing allows the system to maintain flight stability and respond to changing conditions. The frame is equipped with a central hub that houses the electronic components and has precise motor attachment points to ensure proper coaxial alignment. The system has safety features such as automatic landings at low battery levels and independent temperature monitoring for each engine. A modular payload interface allows for versatile application in various applications while maintaining the core stability and performance characteristics of the system.FIG. 2 shows a block diagram of the dual propeller system of the proposed drone system according to an embodiment of the present disclosure.FIG. 3 is diagrams illustrating the dual propeller system of the proposed drone system according to an embodiment of the present disclosure.The coaxial drone employs a dual propeller system as shown in Figure 3 of contrarotating configuration. As FIG. 2 shows, the drone system consists of a plurality of key components, each contributing to its overall functionality. The power source, typically a LiPo battery, powers the entire system. The most important specifications of the battery include a voltage of, for example, 11.1 V or 14.8 V and a capacity of often 3000 mAh or more, which ensure sufficient power for operation. Electronic speed controllers (ESCs) control the power transmitted to each engine and provide precise speed and torque control that is essential for maintaining flight stability. The drone is operated with two brushless DC motors, the upper motor driving the upper propeller and the lower motor driving the lower propeller in the opposite direction. This counter-rotating configuration compensates for torque, provides stability, and eliminates undesirable rotational forces. The propellers play a decisive role: the upper propeller generates lift and propulsion, while the lower propeller compensates for torque and generates additional lift, making the system more efficient. The flight controller serves as a central processing unit, processes data from various sensors, and adjusts the engine speed to ensure stable flight. The proposed drone system comprises a plurality of sensors to improve the performance of the drone. The sensors include an inertial measurement unit (IMU) that provides orientation data, a barometer for height control, and GPS for precise navigation. All these components are housed in a lightweight and yet robust frame that ensures durability and at the same time makes the drone warm and efficient.The coaxial drone has several novel aspects that distinguish it from conventional drone designs. Its compact design, made possible by the dual propeller configuration, reduces overall size and makes it ideal for operation in confined spaces. The counterrotating propellers make a tail rotor superfluous, which simplifies the design and reduces power losses. In addition, the vertical orientation of the propellers minimizes air resistance compared to conventional quadrocopters and thus improves overall efficiency. The modular nature of the drone allows for easy replacement of the payload systems, thereby being adaptable to various applications including monitoring, delivery, and data collection. The improved stability is another important advantage of the coaxial drone. Advanced flight control algorithms provide optimal performance even under turbulent conditions and make them more reliable in demanding environments. This flexibility and efficiency make the drone highly effective for applications such as port monitoring, low altitude monitoring, and disaster management.A key component of the proposed drone system is the power source that controls operation of the drone by energizing the ESCs, which in turn energizes the motors. The electronic speed controllers (ESCs) regulate the engine speed via pulse width modulation (PWM) signals received from the flight controller. The two motors operate in a coordinated manner, with motor 1 driving the upper propeller in the clockwise direction (CW) and motor 2 driving the lower propeller in the counterclockwise direction (CCW). This synchronized motion of the propellers not only compensates for the torque but also creates the necessary lift for flight.The flight controller continuously receives data from various sensors and adjusts the engine speed accordingly to ensure stability. The IMU provides orientation data in real time while the barometer aids in height adjustment. GPS functions allow the drone to navigate efficiently and provide precise control during flight. These integrated components operate together seamlessly and make the coaxial drone a highly efficient and versatile flight system.The present invention relates to a coaxial drone system with a double propeller system and contrarotating configuration. The drone coaxial propeller design reduces torque imbalance compared to single rotor designs. The dual propeller configuration synchronizes operation and thus leads to improved lifting performance and stability even under adverse conditions. Specific materials and dimensions are not mentioned, but they are designed to maximize lift and minimize drag. The propeller blades are aerodynamically shaped to reduce drag. The dual propeller system has synchronization to effectively balance torque, probably through precise motor controls. Validation tests for torque reduction and efficiency enhancement are not described in detail, but would require comparative analysis with conventional designs.In one embodiment, the drone system has a cylindrical or rounded body that reduces drag and thus allows more even airflow and less turbulence during flight. Important components such as sensors, motors and power supply are placed centrally and strategic to ensure a low center of gravity and thus improve balance and stability. Materials such as light metal alloys and reinforcements provide durability with minimal weight.In one embodiment, the drone system includes a compact motor housing. Functions incorporated into the drone include vibration damping materials and structural structures that provide smooth operation of the onboard sensors. The motor housing is easily accessible and modular, which enables rapid assembly and upgrading. The compact design reduces downtime and ensures efficient operation through simplified maintenance and component integration.In one embodiment, the drone system is equipped with multiple sensors positioned for maximum field of view and optimal data acquisition. The reinforced support arms ensure stability with low weight and thus ensure load capacity at different loads. The support arms are capable of handling various operating loads while maintaining their mobility and load capacity. To ensure that the weight distribution minimizes torque imbalance during flight, the component arrangement is optimized to evenly distribute the weight and minimize torque imbalance.In one embodiment, the dimensions of the drone system, for example, Ø12 and Ø3, are chosen for precise alignment and performance optimization. The specific slopes of 46.64° and curves (R15, R12) improve lift and stability while reducing drag.In one embodiment, wind tunnel or CFD tests are performed for performance validation, particularly aerodynamic performance.The coaxial dual propeller assembly along a central axis combined with a rounded aerodynamic body and a compact motor housing makes the drone unique and improves buoyancy, stability and efficiency. The modular and adaptive characteristics of the drone system make it a highly competitive system for a variety of applications. The streamline and compact cylindrical body contributes to aesthetic and marketability and makes the drone visually appealing without sacrificing functionality.The proposed drone system is suitable for monitoring, industrial inspection, logistics and disaster assistance. Its modular construction enables adaptation to different environments. The modular design may incorporate features such as SONAR and advanced sensor technologies to extend capabilities for future applications. The design allows scalability and integration with new technologies such as AI-based navigation or advanced environmental sensors. The drone system uses light metal alloys and reinforcements to ensure durability under various conditions. Thanks to its aerodynamic body and stable propeller system, the drone is designed to remain stable and functional even in heavy wind and rain. The materials used in the drone include corrosion resistant coatings for a long life.The drone system has light and efficient batteries that are optimized for longer flight times. The dual propeller configuration minimizes energy losses due to optimized thrust, while engine efficiency lowers battery consumption. With a single charge and under typical load conditions, the drone system reaches a flight time of 35 minutes. This indicates the optimized design of the drone and suggests competitive performance compared to similar models.The drawings and the foregoing description show examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be divided into multiple functional elements. Elements of one embodiment may be added to another embodiment. For example, the order of the processes described herein may be changed and is not limited to the manner described herein. Moreover, the actions of a flow chart need not be performed in the order shown; nor do all actions necessarily need to be performed. Also, actions that are not dependent on other actions may be performed in parallel with the other actions. The scope of the embodiments is by no means limited by these specific examples. Numerous variations, whether or not explicitly stated in the specification, such as differences in structure, dimensions, and material use, are possible. The scope of the embodiments is at least as broad as recited in the following claims.Advantages, other advantages and solutions to problems have been described above with reference to specific embodiments. However, the advantages, merits, solutions to problems and any components that may result in an advantage, merit or solution being introduced or enhanced are not to be understood as critical, required or essential features or components of individual or all claims.REFERENCES100 A coaxial drone system with two propellers. 102 frame 104 power source 106 plurality of sensors 108 first motor 110 second motor 112 first propeller 114 second propeller 116 electronic cruise control 118 flight lot 120 modular payload interface 202 power source 204 first motor (upper propeller) 206 electronic speed control (ESC) 208 thrust power 210 second motor (lower propeller)

Claims

A dual propeller coaxial drone system comprising: a frame capable of receiving all components of the system; a power source comprised of one or more batteries and configured to power components of the system; a plurality of sensors configured to acquire real-time environmental data; first and second motors mounted in a coaxial configuration on the frame; a first propeller coupled to the first motor, the first motor configured to rotate the first propeller clockwise; a second propeller coupled to the second motor, the second motor configured to rotate the second propeller counterclockwise; at least one electronic speed controller that controls power distribution from the power source to the first motor and to the second motor; and a flight controller configured to: receive sensor data from the plurality of sensors; process the sensor data to determine the flight conditions. generating control signals based on the processed sensor data; and transmitting the control signals to the electronic speed controller to adjust the rotational speeds of the first and second motors.The drone system of claim 1, wherein the plurality of sensors comprises: an inertial measurement unit configured to acquire orientation data; a barometer configured to measure altitude data; and a GPS module configured to provide location data.The drone system of claim 1, wherein the power source comprises one or more lithium polymer batteries, the battery or batteries configured to provide a voltage between 11.1 V and 14.8 V.The drone system of claim 1, wherein the flight controller is further configured to execute stabilization algorithms using the sensor data, calculate optimal engine speeds to maintain flight stability, and adjust the control signals in real time based on changing flight conditions.The drone system of claim 1, wherein the first propeller is positioned a predetermined distance above the second propeller, the predetermined distance being optimized to minimize aerodynamic interference between the first propeller and the second propeller.The drone system of claim 1, further comprising a modular payload interface configured to establish mechanical coupling with different payload modules and provide power and data connectivity to the coupled payload modules.The drone system of claim 1, wherein the frame comprises: a central hub in which the flight controller and the electronic speed controller are located; motor attachment points configured to maintain precise coaxial alignment of the first and second motors; and lightweight composite structural members.The drone system of claim 1, wherein the electronic speed controller comprises: a first channel associated with the first motor; a second channel associated with the second motor; and processing circuitry configured to generate pulse width modulation signals for precise control of the motor speed.The drone system of claim 1, wherein the flight controller is further configured to monitor the battery voltage, calculate the remaining flight time based on the current power consumption, initiate automatic landings when the battery level falls below a predetermined threshold, and maintain flight stability during the automatic landings.The drone system of claim 1, wherein the first motor and the second motor are brushless DC motors, each motor being equipped with independent temperature monitoring and overload protection.

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