Corner Reflector Unfolding Mechanism for Decoy Stability
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Solution Overview
Problem
Existing corner reflectors face challenges in prolonging their time in the air to deceive enemies effectively and in suppressing descending speed, with issues related to entangled hanging ropes causing improper unfolding and insufficient speed reduction due to flat radio wave reflection faces.
Innovation Solution
A corner reflector design featuring a three-dimensionally unfolding radio wave reflection film with an annular hollow balloon and a canopy that unfolds concurrently, eliminating the need for hanging ropes and stabilizing the falling posture with a gas supplying device connected to the balloon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a parachute is used to suppress descending speed, then the descending speed is reduced, but the volume of the corner reflector increases and unfolding may fail due to entangled hanging rope
Solution Approach 1:
The patent removes the parachute and hanging rope system from the corner reflector structure. Instead of using a parachute to suppress descending speed, the invention integrates the speed suppression function directly into the corner reflector body through its three-dimensional unfolding structure and radio wave reflection faces, thereby eliminating the complexity and entanglement issues associated with separate parachute systems
Solution Approach 2:
The patent combines the functions of speed suppression and corner reflector operation into a single integrated structure. The three-dimensionally unfolded radio wave reflection faces serve both as the functional element for radar reflection and as the structure that provides air resistance for speed suppression, eliminating the need for separate parachute components
2Device complexity
If the radio wave reflection face is made flat, then the structure is simple, but it is difficult to suppress descending speed sufficiently
Solution Approach 1:
The patent transitions from a flat, two-dimensional radio wave reflection face to a three-dimensionally unfolded structure. By arranging multiple reflection faces in three-dimensional space with specific spatial relationships, the invention simultaneously achieves adequate air resistance for speed suppression while maintaining the simplicity of individual flat reflection face components
3Reliability
If the corner reflector unfolds in the air, then it can receive and reflect radio waves, but the time of floating in the air is insufficient
Solution Approach 1:
The patent employs a dynamic unfolding mechanism where the corner reflector transitions from a compact stored state to an expanded operational state in the air. The three-dimensional unfolding structure increases the surface area for air resistance, naturally extending the floating time while ensuring the reflection faces are properly positioned for reliable radio wave reception and reflection
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 suppresses descending speed, ensures proper unfolding, and stabilizes the falling posture, enhancing the decoy's duration and reliability by eliminating entangled rope issues and utilizing a gas cylinder for stabilization.
Implementation Method 1
when gas is supplied therein, the hollow balloon expands with pressure of the gas
Implementation Method 2
enables the corner reflector 6 after unfolding to fall freely while suppressing descending speed using air resistance
Implementation Method 3
reflects the radio wave in the incident direction
Data Source
Figure 1~2
Figure 3A~3B
Figure 4
AI summary
A corner reflector 11 includes: a radio wave reflection film 11a having three reflection faces that are mutually orthogonal, and an unfolding device 11b which unfolds the radio wave reflection film 11a three-dimensionally. The corner reflector further includes: a canopy 12 that unfolds concurrently with unfolding of the radio wave reflection film 11a, and the canopy 12 is connected to the unfolding device 11b so as to partially overlie the radio wave reflection film 11a.