Emergency Drone Landing Systems

A device for autonomously returning drones to their starting point in the event of an emergency during flight. The device consists of a parachute, a high-pressure gas propulsion system, and a control system. When an emergency is detected, the parachute opens using gas ejection to deploy the parachute and prevent falls. The control system then calculates a return flight path based on the drone's departure location, flight data, and current position. It uses the high-pressure gas propulsion system to autonomously fly the drone back to the starting point.

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A fixed-wing drone recovery system that allows landing of high-speed drones without runways using a moving recovery platform. The system involves attaching the drone to a carrier vehicle, which moves at a constant speed. The drone catches up, syncs position, and lands on a recovery net. This shortens landing distance, eliminates runways, and improves braking vs fixed runways. The carrier vehicle's motion increases deceleration, and a flexible net reduces impact. The drone and vehicle communicate for real-time coordination.

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Active parachute recovery system for unmanned aerial vehicles (UAVs) that enables reliable and controllable parachute recovery in all flight conditions. The system uses a rocket-powered parachute cabin cover that explosively separates from the UAV and deploys the parachute perpendicular to the fuselage. This avoids entanglement with propellers and tail surfaces during deployment. The cabin cover also has a position indicator and opening mechanism. The rocket-assisted deployment reduces canopy opening height and allows lower speed recovery. The cabin cover separates to prevent drag. The main parachute has a cutter and closing line for controlled inflation. The rocket-assisted deployment allows controlled recovery in any attitude.

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Controlling the slow descent of a firefighting drone using an optimized sequence of steps to improve safety and reduce secondary disasters when the drone crashes. The steps are: (1) check if fault level exceeds threshold, (2) check power conditions, (3) adjust drone attitude, (4) stop propellers, (5) open parachute. If power is insufficient, open parachute directly. If flight height is low or fault duration long, open parachute again. This sequence allows controlled descent while preventing propeller damage and reducing crash impact.

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Flight path modification for drones that can autonomously recover from communication loss during missions. The drone determines if communication is lost, and if so, modifies its flight path to safely recover. It can recover communication by flying higher, turning, or landing. If recovery fails, it returns to the takeoff point or nearest landing site. For recon missions, it reverses course or completes the mission. For strike missions, it flies to an emergency site. This allows the drone to recover from comm loss without pre-planning multiple routes.

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A multi-mode drone with backup power supply for reliable operation and safe landing. The drone has a main power supply and a backup power supply connected to the flight controller. The parachute is connected to the backup power supply. In case of main power failure, the backup power allows the flight controller to continue functioning. This prevents crashes due to power outages. The backup power also enables the GPS to keep working and the drone to be tracked. Additionally, the backup power opens the parachute for safe landing.

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Drone search and rescue system that enables efficient tracking and locating of crashed drones using onboard GPS modules. The system aims to mitigate the limitations of existing drone GPS modules for crash recovery. It involves a drone search and rescue method and system that addresses the shortcomings of existing drone GPS modules for crash recovery. The method involves continuously logging GPS data during flight and saving it in a protected module. In case of a crash, the drone's GPS signal disappears, but the onboard GPS module keeps working and provides accurate crash location data. This allows efficient search and recovery of crashed drones.

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Device for rapid parachute deployment on UAVs to improve recovery safety and reliability. It uses a parachute rocket to quickly pull out and inflate the main parachute. A top parachute attaches to the rocket and helps straighten the main parachute. After a delay, the rocket separates. A cutter releases the main parachute. This avoids long parachute opening times and allows emergency recovery. A towing parachute inflates the main parachute faster. The UAV body lands horizontally and separates from the main parachute.

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System for locating and recovering small drones that have crashed and become lost. The drone has a separate data recording system with backup positioning and communication components. If the main flight control system fails during an emergency landing, the backup system takes over to quickly determine the drone's location and distribute it to the user's mobile device or cloud server. This allows rapid recovery of the drone after a crash. The recording system also captures flight data for analysis.

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Emergency parachute system for side launch drones that ejects a parachute from the side of the drone to prevent it from getting caught on the blades. The parachute is mounted on the bottom of the drone and ejected laterally using a servo motor and spring. A gyro sensor detects when the drone is tilted or freefalling and triggers the parachute release. This side ejection method prevents the parachute from getting caught on the drone blades during deployment.

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A safe and lightweight parachute landing method for unmanned aerial vehicles (UAVs) that allows landing in open areas without requiring additional weight from wheels or belly landing gear. The method involves automatically deploying a parachute when conditions indicate a safe landing. The UAV's motor stops spinning the propellers before parachute deployment. This ensures the UAV is stationary before the parachute opens. The parachute is then deployed after a brief delay to allow the UAV to come to a complete stop. The parachute landing system uses onboard sensors to detect flight parameters like speed, wind, and altitude to determine when to deploy the parachute.

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Device to protect and locate out-of-control drones by using a modular housing with parachute, sensors, and positioning modules. The parachute deploys when acceleration near zero indicates freefall. Sensors monitor drone motion. The positioning module quickly finds the drone after it crashes. This allows recovering intact drones instead of damage from crashes. The modular design allows replacing just the parachute box for reuse. The optimized parachute opening algorithm ensures timely deployment.

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A method for lossless and precise recovery of fixed-wing drones and automatic disturbance rejection control. The method involves using RTK (Real-Time Kinematic) positioning to accurately track the drone's flight path. This track is used to guide the drone into a recovery area. If interference occurs during the recovery, the drone's position errors are analyzed and the trajectory is adjusted to compensate for the interference. This allows the drone to autonomously land without damage or loss.

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A rapid deployment parachute system for unmanned aerial vehicles (UAVs) that allows faster and safer recovery of UAVs using parachutes. The system involves adding a top parachute above the main parachute. When the main parachute is deployed, the top parachute inflates first and straightens the main parachute faster, reducing height loss during recovery. It also improves reliability in all UAV attitudes, unlike conventional parachutes. The top parachute is attached to the main parachute and UAV body. It uses a separator that delays cutting of a closing rope to separate the parachutes.

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Smart parachute deployment system for drones that uses flight parameter analysis instead of hardware monitoring to determine when to deploy the parachute. The system detects when the drone meets certain conditions like being unlocked and flying at a certain altitude for a duration. It then analyzes the drone's flight parameters like attitude and vertical speed. If they meet specific conditions indicative of a crash, the parachute is deployed. This improves reliability compared to hardware-only detection because it can cover more crash scenarios and handle logic errors.

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Redundant switching and parachute deployment system for UAVs to improve flight safety. The system has a primary controller and a backup controller. If the primary controller fails, the backup controller takes over. If both controllers fail, a microcontroller (MCU) activates a parachute deployment mechanism. The system monitors flight parameters like attitude and speed to determine if the UAV is out of control.

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Collaborative aerial recovery and release system for fixed-wing drones using multiple drones hanging below a mother drone. The system allows autonomous vertical recovery and release of fixed-wing drones without impact or manual intervention. The hanging drones have independent motion to align their cables with the target drone. This allows the mother drone to capture and release the target drone without the target needing vertical takeoff/landing capability. The hanging drones also have redundant power for resisting wind.

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An aircraft designed for safe emergency landings, particularly for drones that uses a fixed parachute and proper center of gravity positioning. The aircraft has a parachute with a rigid frame that is permanently open and connected to the body. The center of gravity is located below the aerodynamic center. These features allow the aircraft to enter a passive parachuting mode without power and descend vertically with stability and a controlled descent rate.

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Launching and retrieving an unmanned aerial vehicle (UAV) from a moving carrier using an automated system that moves a pad for the UAV to attach to. The system uses a mechanical arm to position the pad to align with the UAV's flight path for launching and retrieval. This allows the launching and recovery of the UAV without needing to stop the carrier or land the UAV.

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Unmanned aerial vehicle (UAV) rescue parachute deployment system that can be safely installed on the UAV without interfering with other components and quickly deploys the parachute through the UAV's rotor disk to reduce undesired momentum. The system has a rotor guard that protects the parachute as it launches through the rotor plane. The parachute is ejected by an assembly into the rotor disk. This allows reliable parachute deployment without damage from the rotors. The rotor guard could be a capsule-shaped container with impact resistant shells or a ring with guide rods that absorb rotor impacts.

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