UAV Liquid Discharge Coupling with Stress Buffering
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Solution Overview
Problem
Conventional unmanned aerial vehicles with fluid jet nozzles are prone to damage or flight disruptions when the nozzle contacts an obstacle, as existing designs lack effective stress buffering mechanisms.
Innovation Solution
An unmanned aerial vehicle equipped with a coupling unit that includes a buffering unit to absorb stress, comprising a deformable tube and a rigid unit, along with a supporting unit that uses gas pressure to maintain the tube's extended position, allowing for precise liquid discharge while minimizing impact from obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid coupling unit is used to ensure structural strength, then the coupling strength is improved, but the impact from obstacle contacts is transmitted to the unmanned aerial vehicle, affecting flight stability
Solution Approach 1:
The coupling unit is divided into a rigid unit and a buffering unit with distinct functions. The rigid unit provides structural strength for liquid discharge, while the buffering unit absorbs impact from obstacle contacts, preventing transmission to the unmanned aerial vehicle.
Solution Approach 2:
The buffering unit is designed in advance to absorb potential impact forces from obstacle contacts. This pre-cushioning mechanism protects the rigid unit and the unmanned aerial vehicle from damage before the impact occurs.
2Object-affected harmful factors
If a flexible buffering unit is used to absorb impact, then the resistance to obstacle contacts is improved, but the rigidity required for precise liquid discharge is reduced
Solution Approach 1:
The coupling unit is segmented into a rigid unit for maintaining structural integrity during liquid discharge and a buffering unit for absorbing impact forces. Each segment performs its specific function without compromising the other.
Solution Approach 2:
Different parts of the coupling unit have different mechanical properties: the rigid unit has high rigidity for precise liquid discharge, while the buffering unit has flexibility for impact absorption. This local differentiation of material properties resolves the contradiction.
3Object-affected harmful factors
If the buffering unit is made longer to increase stress absorption capacity, then the stress buffering capability is improved, but the device complexity increases
Solution Approach 1:
The buffering unit's length is optimized to provide sufficient stress absorption capacity while avoiding excessive complexity. The parameter of length is adjusted to achieve the desired balance between stress buffering and device simplicity.
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 buffering unit effectively absorbs stress from obstacle contacts, preventing damage to the coupling unit and maintaining flight stability by distributing and reducing the impact of such contacts, ensuring reliable liquid discharge operations.
Implementation Method 1
a supporting unit that uses gas pressure to maintain the tube's extended position
Implementation Method 2
the coupling unit includes a buffering unit configured to buffer stress generated in the coupling unit
Data Source
AI summary
Provided is an unmanned aerial vehicle configured to be able to discharge a liquid, comprising: a container of the liquid; a discharging unit configured to discharge the liquid; and a coupling unit configured to couple the container and the discharging unit together, wherein the coupling unit includes a buffering unit configured to buffer stress generated in the coupling unit. The container may be an aerosol container. The coupling unit may include a rigid unit coupled to the buffering unit and configured to have rigidity higher than the buffering unit.