Rotating Ring Locking Mechanism for Secure Drone Deck Landing

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Solution Overview

Problem

Existing drone landing systems, particularly on moving ships, fail to provide quick and reliable fixation and efficient re-launch, especially in harsh environments, risking detachment and damage.

Innovation Solution

A locking device with rotatable rings and cables that automatically adjust between unlocking and locking positions, using actuating means to secure the drone to a support surface efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If rings and cables are used to lock a drone after landing, then the drone can be secured to the support surface, but the operation becomes complicated and time-consuming

Engineering Contradiction:
Improvedrone fixation reliabilityVSAvoidlocking operation complexity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The locking device automatically secures the drone to the support surface through self-activating mechanisms. When the drone lands on the support surface, the system autonomously engages the locking cables and rings without requiring manual intervention, thereby maintaining reliable fixation while eliminating operational complexity

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The locking cables and rings are pre-positioned and pre-tensioned in readiness before landing. The system is prepared in advance with all locking components in their optimal positions, enabling immediate automatic engagement upon drone contact with the support surface, thus ensuring both reliability and operational simplicity

Inventive Principle:
Principle #10Preliminary action

2Reliability

If manual locking operations are performed on a moving ship, then the drone can be fixed to the deck, but the operation time increases and reliability decreases due to ship movement

Engineering Contradiction:
Improvedrone fixation reliabilityVSAvoidlocking operation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The locking device autonomously performs the entire securing operation without human intervention. The system detects drone landing and automatically activates the locking mechanism, eliminating the time loss and reliability issues associated with manual operations on a moving ship deck

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Manual mechanical locking operations are replaced with an automated control system that uses sensors, actuators, and control algorithms to perform the locking function. This substitution eliminates the delays and errors inherent in manual operations while maintaining secure fixation despite ship movement

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If a locking device uses multiple cables and rings, then the drone can be securely locked, but the device complexity increases

Engineering Contradiction:
Improvedrone locking reliabilityVSAvoidlocking device structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Multiple locking cables and rings are integrated into a unified modular system where components work together as coordinated units. The cables are bundled and routed through common attachment points, and the rings are interconnected, reducing overall system complexity while maintaining the redundancy and reliability of multiple locking elements

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4373746B1Locking device for an aircraft
Publication Date: 2026.04.08 LEONARDO SPA
  • EP4373746B1 patent drawingFigure 1A~1B
  • EP4373746B1 patent drawingFigure 1C
  • EP4373746B1 patent drawingFigure 2

AI summary

A locking device (1) for an aircraft is described, comprising a body (2) adapted to be fixed to a support surface (S), a first ring (3) and a second ring (4) rotatable the one with respect to the other with respect to a rotation axis (I) between a first angular position (61) and a second angular position (63). The first and second ring (3, 4) enclose an area (6) for the landing of the aircraft and are contained within the body (2). The locking device also comprises a plurality of cables (5), which connect the first ring (3) to the second ring (4). The locking device (1) is positionable in an unlocking position, wherein the first and second ring (3, 4) are in the first angular position (61), the cables (5) are spaced from said area (6); or in a locking position, wherein the first and second ring (3, 4) are in the second angular position (63) and the cables (5) occupy a region (63) of the area (6), so as to cooperate in contact with the aircraft to constrain it with respect to the support surface (S).