UAV Spooler with Exit Geometry Sensor for Filament Tension Control
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) face challenges in maintaining stable filament tension due to environmental conditions like wind, which can cause excess tension or slack, potentially damaging the fragile filament or leading to entanglement with objects.
Innovation Solution
A spooling apparatus with a filament feeding mechanism, tension sensing, and a controller that adjusts the deployed filament length based on exit geometry to maintain optimal slack and prevent excessive tension, while also allowing for cooling of the filament to manage heat generated by power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the filament is deployed to extend the range of the aerial vehicle, then the vehicle can operate farther from the spooling apparatus, but the filament becomes more susceptible to tension damage and entanglement
Solution Approach 1:
The spooling apparatus dynamically adjusts the amount of filament deployed based on real-time exit geometry sensing. The controller continuously monitors the angle of departure and modifies the deployed length accordingly, allowing the system to adapt to changing environmental conditions such as wind, thereby extending operational range while maintaining filament integrity
Solution Approach 2:
The system employs a feedback mechanism where the exit geometry sensor continuously provides information about the filament's angle of departure to the controller. This feedback loop enables real-time adjustments to the deployed filament length, preventing excessive tension and entanglement while maximizing the vehicle's operational range
2Stability of the object's composition
If the filament tension is increased to reduce slack and prevent entanglement, then the filament remains taut and organized, but the risk of tension damage increases
Solution Approach 1:
The system dynamically adjusts filament deployment to maintain optimal tension levels. By continuously sensing exit geometry and modifying deployed length in real-time, the system keeps the filament taut and organized without applying excessive tension that could cause damage
Solution Approach 2:
The controller changes the parameter of deployed filament length based on sensed exit geometry. By adjusting this parameter dynamically, the system maintains the filament in an organized state with appropriate tension, avoiding both excessive slack and damaging tension levels
3Use of energy by moving object
If the power transmission through the filament is increased to enhance vehicle operation, then more energy is available to the aerial vehicle, but heat generation increases which can damage the filament
Solution Approach 1:
The spooling apparatus pre-cools the filament before it is deployed to the aerial vehicle. By applying cooling measures in advance, the system prepares the filament to handle power transmission loads without excessive heat buildup, enabling higher energy transmission while preventing thermal damage
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
The solution effectively optimizes filament tension and reduces the risk of damage or entanglement, ensuring reliable operation of UAVs by maintaining a stable exit geometry and managing heat, thus enhancing the durability and safety of the system.
Implementation Method 1
a cooling apparatus for cooling the first portion of filament by forcing cooled air through perforations in the spool and over the first portion of filament
Data Source
AI summary
In an aspect, in general, a spooling apparatus includes a filament feeding mechanism for deploying and retracting filament from the spooling apparatus to an aerial vehicle, an exit geometry sensor for sensing an exit geometry of the filament from the spooling apparatus, and a controller for controlling the feeding mechanism to feed and retract the filament based on the exit geometry.