Autonomous Rescue Watercraft With Self-Righting Buoyancy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rescue vehicles face challenges in navigating autonomously to isolated individuals in adverse conditions, particularly in water rescues, and lack a self-righting mechanism to ensure mission success and safety, often requiring human intervention to recover from flips.
Innovation Solution
An autonomous aquatic rescue vehicle equipped with directional and speed controls, search devices like RDF and infrared sensors, and a detachable self-righting buoyant component that allows the vehicle to locate, assist, and retrieve individuals in need, even if flipped, using off-the-shelf components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an autonomous watercraft is deployed for rescue missions, then the speed of rescue operation is improved, but the risk of the vehicle flipping over and losing mission capability increases
Solution Approach 1:
The watercraft incorporates a self-righting mechanism that enables it to automatically recover from capsized positions without external assistance. The system uses buoyant components positioned to create a righting moment that automatically rotates the vehicle back to an upright orientation, allowing the autonomous rescue vehicle to maintain mission capability despite adverse conditions.
Solution Approach 2:
The watercraft is equipped with buoyant components and a self-righting mechanism designed in advance to prevent total mission failure. This proactive design ensures that even if the vehicle flips during operation, it can automatically recover and continue its rescue mission, cushioning against the loss of reliability.
2Reliability
If a self-righting mechanism is added to the autonomous watercraft, then the reliability of the vehicle is improved, but the device complexity increases
Solution Approach 1:
The self-righting mechanism utilizes buoyant components that create a counteracting force against gravity when the vehicle capsizes. These buoyant elements are strategically positioned to generate a righting moment that automatically rotates the watercraft back to an upright position, providing reliability through a relatively simple physical principle rather than complex mechanical systems.
Solution Approach 2:
The buoyant components are asymmetrically positioned on the watercraft hull to create an inherent righting moment. This asymmetric arrangement ensures that when the vehicle flips, the buoyancy force acts at a distance from the center of gravity, automatically generating the torque needed to right the vehicle without requiring complex sensing or actuation systems.
3Adaptability or versatility
If the autonomous watercraft is designed to be robust and self-righting, then the ability to operate in adverse conditions is improved, but the ease of manufacture decreases
Solution Approach 1:
The self-righting capability is implemented as a separate, modular buoyant component system that can be attached to or integrated with the watercraft hull. This segmentation allows the robust self-righting feature to be added as a distinct module, potentially using off-the-shelf buoyant components, rather than requiring complete redesign of the entire vehicle structure.
Solution Approach 2:
The buoyant components serve multiple functions: they provide flotation for the autonomous vehicle, enable self-righting capability, and can potentially assist in rescue operations. This multi-functionality reduces the need for separate specialized components, simplifying manufacture while maintaining adaptability to adverse conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables rapid, efficient, and safe rescue operations by autonomously navigating to and retrieving isolated persons, ensuring the vehicle can right itself without human intervention, thus enhancing survival chances and operational reliability.
Implementation Method 1
a detachable self-righting buoyant component
Data Source
AI summary
An aquatic rescue vehicle formed by adding directional and speed controls to a watercraft along with an autonomous control system to guide the vehicle to specified waypoints is disclosed. The rescue vehicle includes search devices such as a radio direction finder (RDF) and an infrared sensor (or camera) to be used to narrow the search for an isolated person (IP). The rescue vehicle may be discharged from a larger watercraft or an airplane and autonomously set out on its rescue mission. The vehicle may first navigate to a designated waypoint near an IP, and then use signals gathered from the RDF and infrared sensor to finally locate, assist, and retrieve the IP. The vehicle also includes a self-righting mechanism so that the vehicle can complete its mission even under the most adverse conditions.