Dandelion-Like Dropsonde for Typhoon Detection
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Solution Overview
Problem
Existing dropsondes with airbag structures are prone to damage in typhoons due to strong winds and harsh weather conditions, leading to reduced hang time and increased resource wastage, making them unsuitable for typhoon detection.
Innovation Solution
A dropsonde with a dandelion-like structure featuring a support system, rotor wing system, rotor wing restraint system, sensing main control system, and electrical damping system, including upper and lower rotor wings with opposite inclination directions, a restraint mechanism, and adjustable resistance for controlled descent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the airbag structure is made with thicker polyethylene film to increase reliability, then the strength is improved, but the device complexity increases and manufacturing cost increases
Solution Approach 1:
The airbag structure is divided into multiple layers (first airbag layer, second airbag layer, third airbag layer) with different material compositions and functions. Each layer serves specific purposes: the first layer provides basic containment, the second layer enhances strength and damage resistance, and the third layer optimizes aerodynamic performance. This segmentation allows the system to achieve high reliability without excessive overall thickness or complexity.
Solution Approach 2:
The patent employs composite material construction for the airbag layers, combining different materials with complementary properties. The second airbag layer specifically uses composite materials that provide both high strength and damage resistance. This approach enables the structure to achieve superior mechanical properties without uniformly increasing thickness throughout the entire airbag.
2Strength
If the airbag structure is designed to be more robust to resist typhoon conditions, then the strength is improved, but the weight increases
Solution Approach 1:
The airbag is segmented into multiple functional layers, each optimized for specific performance characteristics. This allows strength to be concentrated where most needed (in the second airbag layer with composite materials) rather than uniformly distributed, reducing overall weight while maintaining necessary strength levels.
Solution Approach 2:
Different regions and layers of the airbag structure have different material properties tailored to their specific functional requirements. The second airbag layer uses enhanced composite materials localized at critical stress points, while other layers use lighter materials, achieving optimal strength-to-weight ratio.
3Adaptability or versatility
If the rotor wings are made with more complex adjustment mechanisms to control descent speed, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The rotor wings are designed with adjustable dip angles that can be dynamically modified during descent. The adjustment mechanism allows the rotor wings to adapt to different descent stages and environmental conditions, optimizing performance without requiring overly complex control systems.
Solution Approach 2:
The rotor wings are pre-configured with specific dip angles and structural characteristics that are optimized for anticipated descent conditions. The adjustment mechanism allows for preliminary setup and then maintains stable operation, reducing the need for continuous complex adjustments.
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 dandelion-like structure ensures the dropsonde is not easily damaged, allowing for extended hang time and effective data collection in extreme weather conditions by controlling the descent speed and maintaining rotor wing functionality, even with minor damage, making it suitable for typhoon detection.
Implementation Method 1
An upper and lower double-layer rotor wing structure is adopted, and the upper and lower rotor wings have the opposite inclination directions and generate the opposite airflow under the effect of an external environment, so that the upper and lower rotor wings have the opposite rotation directions, thereby increasing air resistance and obtaining longer hang time for the sonde
Implementation Method 2
the resistance value of the simulated resistor may be adjusted by the micro controller, so as to change the received relative torque when the upper and lower rotor wings rotate and change the relative rotation speed of the upper and lower rotor wings, thereby realizing the control of the descending speed of the sonde
Data Source
AI summary
A dropsonde with a dandelion-like structure includes a support system, a rotor wing system, a rotor wing restraint system, a sensing main control system and an electrical damping system, the support system further comprising a hollow upper strut, a hollow lower strut, an upper disc fixedly connected to top of the upper strut and a lower disc fixedly connected to top of the lower strut, the upper strut is partially inserted into the lower strut, and the upper parts of the upper disc and the upper strut are exposed outside the lower strut; wherein the rotor wing system includes a plurality of upper rotor wings, a plurality of lower rotor wings, a plurality of upper springs, a plurality of lower springs, a plurality of upper connecting members and a plurality of lower connecting members.