66 patents in this list

Updated:

Unmanned aerial vehicles operating in challenging environments face multiple structural and mechanical stresses that can significantly reduce their operational lifespan. Field data shows that landing impacts, dust infiltration, and collision events account for over 70% of drone failures, with mean time between failures often falling below 100 flight hours for commercial units.

The fundamental challenge lies in balancing structural durability against the critical requirements of weight minimization and aerodynamic efficiency.

This page brings together solutions from recent research—including protective outer cage designs with impact-decoupling mechanisms, dust-resistant motor assemblies, retractable landing systems, and reinforced signal line protection schemes. These and other approaches focus on extending drone longevity while maintaining performance in real-world operating conditions.

1. Hub-Integrated Skid Surface for Rotor Shaft Protection in Unmanned Aerial Vehicle Motors

AeroVironment, Inc., 2023

A motor designed for unmanned aerial vehicles (UAVs) to prevent damage when landing on rough terrain. The motor has a hub with a skid surface that contacts the motor casing during propeller strikes on the ground. This reinforcement prevents excessive bending of the rotor shaft, which could damage the motor.

2. Removable Deformable Lateral Bumpers for Quadcopter Drone Propeller Protection

PARROT, 2015

Removable protection for quadcopter drones that provides propeller protection without adding bulk when not needed. The protection consists of removable lateral bumpers that extend beyond the propeller's rotation area. A deformable arm connects Each bumper to the drone's propulsion units on that side. The arm can flex if the bumper hits an obstacle, reducing shock and preventing damage.

US20150321759A1-patent-drawing

3. Drone with Partitioned Fuselage and Detachable Wings Featuring Torsion Spring-Connected Impact Cushioning

NINGBO DENGHOU TECH CO LTD, NINGBO DENGHOU TECHNOLOGY CO LTD, 2024

A drone design to improve heat dissipation and impact resistance. The drone has a main body with a fixed bottom fuselage and detachable wings. Inside the fuselage, components like the camera and motors are separated by partitions with heat insulating film to prevent heat transfer between components. A torsion spring connects the fuselage to the main body, allowing it to expand and cushion impacts.

CN220786174U-patent-drawing

4. Drone Battery Casing with Nano-Ceramic Aluminum Alloy Lattice Structure

CHONGQING ELECTROMECHANICAL ADDITIVE MANUFACTURING CO LTD, CHONGQING ELECTROMECHANICAL ADDITIVE MFG CO LTD, 2023

A drone battery casing made of a lattice structure that provides improved protection and heat dissipation compared to traditional casings. The casing is made of nano-ceramic aluminum alloy and has a periodic lattice structure. It replaces machined casings made of materials like PC or aluminum. The lattice structure enhances stiffness and force resistance while dissipating heat better than solid casings. The lattice casing provides better protection for the drone battery during flight compared to traditional casings.

CN220138534U-patent-drawing

5. Modular Drone Wing with Detachable Frame, Cover Body, and Front Wing Panel

JIANGSU KELUWEI NEW MATERIAL TECH CO LTD, JIANGSU KELUWEI NEW MATERIAL TECHNOLOGY CO LTD, 2023

Loitering drone wing design that reduces weight and allows easier maintenance compared to traditional integral wings. The wing is made of detachable components - a frame, cover body, and front wing panel - instead of a single integrated piece. The frame reduces weight. The cover body can be replaced if damaged instead of the entire wing. The front wing panel provides positioning when attached. This modular design allows component swapping instead of full wing replacement if damaged.

CN220054174U-patent-drawing

6. Drone Battery System with Integrated Temperature Regulation and Safety Airbag

JIANGSU UNIV OF SCIENCE AND TECHNOLOGY, JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY, 2023

Drone battery system with endurance protection for extreme environments. It uses a combination of heating and cooling to regulate battery temperature. The battery is sandwiched between an upper and lower electric heating film. Nitrogen piping and a nitrogen tank are located below the battery. A controller, airbag, and energy storage component connect everything. In cold environments, nitrogen expands to cool the battery. In warm environments, the heating films heat the battery. This comprehensive temperature regulation improves battery performance in extreme conditions. The airbag provides rescue if the battery fails. The battery structure with heating, cooling, and airbag avoids weight/volume increase.

CN117059965A-patent-drawing

7. Drone Frame with Rectangular Aluminum Tubes, Foam Core, and Carbon Fiber Skin

XIAN LINGKONG ELECTRONIC TECH CO LTD, XIAN LINGKONG ELECTRONIC TECHNOLOGY CO LTD, 2023

A lightweight, precise, and aesthetically pleasing drone design using aluminum tubes, carved foam structures, and carbon fiber skins. The drone frame is made from rectangular aluminum tubes for lightness and ease of assembly. The internal structure is carved from foam to precisely shape the fuselage. The exterior skin is made of carbon fiber cloth. The wing connection is machined aluminum. The foam structure fills the fuselage and maintains its shape. The carbon fiber skin provides strength and lightness. The machined aluminum wing connector provides strength.

CN219927990U-patent-drawing

8. Unmanned Aerial Vehicle with Rotor-Integrated Cam Mechanism for Automatic Landing Gear Retraction and Extension

Samsung Electronics Co., Ltd., 2023

An unmanned aerial vehicle (UAV) with retractable landing gear that extends when landing to protect the main body and retracts during flight for aerodynamic efficiency. The landing gear has a cam mechanism that detects contact with the ground and extends the legs. The cam structure is part of the rotors and housing, so it is automatic and doesn't require separate components. When the rotors rotate, the cam engages with the landing gear to push it out.

US11753150B2-patent-drawing

9. Modular Power System with Detachable Multi-Power Combination for Unmanned Aerial Vehicles

北京奇正数元科技股份有限公司, BEIJING QIZHENGSHUYUAN TECHNOLOGY CO LTD, 2023

Modular power system for unmanned aerial vehicles that enables versatility in adapting to different takeoff/landing scenarios and payload requirements. The UAV has a detachable multi-power combination that includes main, auxiliary, and secondary power modules. These modules can be swapped out to match the specific power needs for different missions. This allows using optimized power systems for tasks like long endurance, heavy payloads, or short bursts, instead of fixed systems. The modules attach to the UAV's fuselage, wings, and tail.

10. Unmanned Aerial Vehicle with Gimbal-Connected Protective Outer Cage and Actuation System

Flyability SA, 2023

An unmanned aerial vehicle (UAV) with a protective outer cage provides high collision resistance while allowing maneuverability and access to inner components. The UAV has an inner frame with flight propulsion, an outer frame connected by a gimbal system, and an actuation system to actively orient the outer frame relative to the inner frame. This allows the outer cage to protect inner components from collisions while still reaping benefits like protection from the outer frame. The actuation can be through outer propellers or electrical actuators on the gimbal connections.

11. Modular Carbon Fiber Unmanned Aerial Vehicle Body with Interspersed Glue Joints and Bolt Fixation

WANG MENGJUN, 2023

Full carbon fiber unmanned aerial vehicle body that uses interspersed glue joints between modular sections to create a lightweight, high-strength, and easily assembled body structure. The modular sections are made of carbon fiber composite material to reduce weight compared to metal bodies. The interspersed glue joints involve inserting an interspersed block into a slot on one section and fixing it with high-temperature glue. Then bolts are used for additional fixation. This allows modular sections to be spliced together into a complete body. The modular design enables customization and repairability while the carbon fiber composite material provides lightweight strength.

12. Dustproof Drone Motor with Perforated Punching Plate for Airflow and Housing with Top Plate Opening

EXEDY Corporation, 2023

A lightweight, dustproof drone motor that balances conflicting requirements of weight reduction and dust protection. The motor includes a housing with a top plate opening and a punching plate attached to cover the opening. The punching plate has through holes. A rotor and stator are inside the housing. The punching plate allows airflow for cooling while blocking dust from entering.

US20230188016A1-patent-drawing

13. Unmanned Aerial Vehicle with Electrically Heated Insulated Interior and Temperature-Controlled Heating Cables

NANJING YUSHUN SOFTWARE CO LTD, 2023

Unmanned aerial vehicle (UAV) for operation in extremely cold environments that can overcome the reduced endurance and range in cold temperatures. The UAV has a heated interior using electric heating cables covered by insulation. Temperature switches control the heating cable power based on interior temperature. This reduces the volume and weight of the heating component compared to enclosed heating systems. It also avoids excessive heat loss through external openings.

14. UAV Battery Cooling System with Integrated Passive Heat Sinking and Active Liquid Coolant Circulation

普宙科技有限公司, 2023

Cooling system for unmanned aerial vehicle (UAV) batteries to prevent overheating and prolong battery life. The system uses a combination of passive heat sinking and active liquid cooling. The battery pack has gaps between adjacent cells to allow airflow. A gas tank stores pressurized liquid coolant. The coolant is circulated through channels in the battery pack using a pump. This provides active cooling to supplement the passive heat sinking. The UAV body has an air outlet to exhaust the hot coolant. The system ensures battery temperatures are within safe limits to prevent degradation.

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15. Unmanned Aerial Vehicle with Runtime Assurance Framework for Component Failure Management

INST OF NETWORK INFORMATION ACADEMY OF MILITARY SCIENCES PLA, INSTITUTE OF NETWORK INFORMATION ACADEMY OF MILITARY SCIENCES PLA, 2022

Safe unmanned aerial vehicle (UAV) system that can continue flight even if hardware components fail. The system uses a runtime assurance framework to detect and handle failures of components like the swashplate and rudder surfaces. If a failure is detected, the UAV smoothly transitions to using the remaining component for flight control. This allows the UAV to continue operating in a safe state instead of crashing if both components fail. The runtime assurance framework monitors failure conditions like swashplate or rudder surface failure during normal operation. When a failure occurs, it initiates a controlled switching process where the failing component gradually stops working before transitioning to single-component control. This prevents unstable flight conditions. The UAV has a cylindrical shell with the swashplate at the top and rudder surfaces at the bottom. The autopilot control module in the middle of the UAV manages both components for normal flight

CN115542715A-patent-drawing

16. Vertical Take-Off and Landing UAV with Compartmentalized Heat Dissipation System

TIANJIN HANGYU INTELLIGENT EQUIPMENT CO LTD, 2022

Oil-electric extended-range vertical take-off and landing unmanned aerial vehicle with improved cooling to enhance battery life and reliability. The UAV has a fuselage with wings, an internal compartment divided into sub-chambers for the battery, motor, and fuel tank. Heat dissipation holes in the compartment walls allow heat from the battery and motor to spread inside. Heat sinks on the wings quickly dissipate this internal heat to the outside air through channels and openings.

17. Multi-Layer Anisotropic Damping Structure with Shock-Absorbing Sponges for UAV Flight Control Systems

TIANJIN PEGASUS ROBOT TECH CO LTD, TIANJIN PEGASUS ROBOT TECHNOLOGY CO LTD, 2022

A vibration damping structure for unmanned aerial vehicles (UAVs) to improve flight stability and prevent damage to the flight control system from high-frequency vibrations. The damping structure uses multiple layers of shock-absorbing sponges sandwiched between positioning sheets and housings. The sponges are bonded to the flight control components and housings. The sponges are made of materials like viscose and glass fiber to provide anisotropic damping. The housings have positioning bosses and holes to securely mount the damping components. The sponges are positioned between the control components and housings to absorb vibrations in all directions.

CN115342160A-patent-drawing

18. Quadcopter-Fixed Wing Hybrid Drone with Parallel Array Redundant Propeller Configuration

AUTOFLIGHT AVIATION TECH KUNSHAN CO LTD, AUTOFLIGHT AVIATION TECHNOLOGY CO LTD, 2022

A quadcopter-fixed wing hybrid drone with redundant propellers for improved reliability and flight performance. The drone has four linear supports with eight lift propellers each, arranged in parallel arrays on both sides of the fuselage. This configuration allows the drone to take off vertically like a quadcopter with all eight propellers engaged, but also provides sufficient lift for fixed wing flight. If a propeller fails during vertical takeoff, the other seven propellers can compensate. For fixed wing flight, the drone can continue with reduced thrust from the remaining seven propellers. The redundant propeller setup provides built-in fault tolerance for improved reliability and longer flight distances.

CN115071962A-patent-drawing

19. Heat Dissipation System with Insulating Spacers and Escape Grooves for UAV Components

SHENZHEN BIG XINJIANG INNOVATION SCIENCE AND TECH LIMITED CO, SHENZHEN BIG XINJIANG INNOVATION SCIENCE AND TECHNOLOGY LIMITED CO, 2022

A compact and lightweight heat dissipation system for unmanned aerial vehicles (UAVs) that improves thermal management without adding weight or complexity. The system uses insulating spacers between the UAV frame and the heating components like electronics boards to prevent direct thermal contact. This allows the components to be mounted at intervals with gaps between them. The spacers have escape grooves to prevent heat conduction through them. The insulation and spacing prevents thermal buildup on the frame and allows airflow around the components for natural cooling.

CN216611577U-patent-drawing

20. Unmanned Aerial Vehicle Structure with Layered Waterproof and Heat-Resistant Enclosure and Integrated Water Channeling and Cooling Mechanisms

DOMESTIC ELECTRICITY LEAD CONTROL TECH TIANJIN LIMITED CO, DOMESTIC ELECTRICITY LEAD CONTROL TECHNOLOGY LIMITED CO, 2022

Waterproof and high temperature resistant unmanned aerial vehicle (UAV) design to enable flight in rainy and hot conditions. The UAV has a waterproof outer cover plate, inner cover plate, and thermal insulation layer sandwiched between them. This provides waterproofing and heat insulation. The outer cover plate, inner cover plate, and insulation layer have grooves for sealing blocks that fit the UAV body wings. The bottom of the UAV has a dripping structure and heat dissipation plates. The dripping structure has a baffle and groove to channel water away. The heat dissipation plates have blades, rings, and a rotating shaft for cooling.

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21. Flight Control Module with Integrated Cooling Assembly and Shock Absorption Mechanism

22. Drone with Double Monocoque Structure for Enhanced Strength and Customizable Exterior

23. Heat Sink Assembly with Copper and Aluminum Components for Enhanced Thermal Management in Tethered Unmanned Aerial Vehicles

24. Foam-Polycarbonate Composite UAV Airframe with Enclosed Cores and Central Support Frame

25. Adjustable Heat Dissipation System with Detachable Heat Sink Fan and Impact-Absorbing Buffer Assembly for Multi-Rotor Drones

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Drones are becoming more trustworthy and durable for a variety of applications via improvements like retractable landing gear for increased aerodynamics and motors strengthened by skids for rough landings. Progress in weight reduction and safety are creating opportunities for a durable, sturdy drone future.