Firearm Attachment Module for Drone Interception
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Solution Overview
Problem
Existing solutions fail to effectively combat unmanned aerial vehicles (drones) without causing destruction, as they either destroy the drones or do not provide a means to safely intercept them.
Innovation Solution
An attachment module for a gas pressure gun featuring barrel-like gas outlets with inclined projections that accelerate projectiles to deploy a net, using PTFE-coated contact sections for low friction and synchronous firing, allowing for the interception of drones without causing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional projectiles are used in gas pressure guns to intercept drones, then the drones can be stopped, but they are destroyed in the process
Solution Approach 1:
The projectile is segmented into multiple separate projectiles (typically 4-6) arranged in a star pattern around a central axis. Each projectile is fired through a separate barrel, allowing them to spread out and form a net-like interception pattern that can entangle the drone without concentrating all force on a single impact point, thereby reducing destruction while maintaining interception effectiveness.
Solution Approach 2:
A net or web-like structure is introduced as an intermediary between the projectiles and the drone. The net spreads out after firing and entangles the drone, distributing the impact force across multiple contact points and the net structure itself, rather than concentrating it on a single hard impact, thus achieving interception without destruction.
2Area of stationary object
If multiple projectiles are fired simultaneously to expand the net, then the interception coverage is improved, but the synchronization and uniformity of projectile acceleration becomes difficult
Solution Approach 1:
Each projectile is given a slightly different local quality in terms of its initial position and angle relative to the central axis. The barrels are arranged at specific angles (e.g., 60 degrees apart for 6 projectiles) and the projectiles are positioned to create an expanding star pattern. This deliberate local variation ensures uniform radial expansion while maintaining manufacturing feasibility.
Solution Approach 2:
The projectile arrangement uses asymmetric angular distribution around the central axis rather than symmetric positioning. The barrels are inclined at specific asymmetric angles to achieve optimal net expansion in all directions simultaneously, allowing the net to cover maximum area while maintaining uniform acceleration characteristics through careful geometric design.
3Stress or pressure
If the contact section of the projectile is increased to improve sealing and guidance, then gas pressure buildup is improved, but friction increases reducing acceleration efficiency
Solution Approach 1:
The contact section parameters are optimized by changing the length-to-diameter ratio and the surface finish characteristics. The contact section length is set to a specific proportion (e.g., 10-20% of total projectile length) to provide adequate sealing and guidance while minimizing friction. Surface parameters such as roughness and material properties are also optimized to reduce friction coefficients, achieving the right balance between pressure buildup and acceleration efficiency.
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 module enables a non-lethal defense system that can safely capture drones within a controlled distance, ensuring high shooting accuracy and minimizing the risk of personal injury by using projectiles with no tips, allowing for the drones to be brought down in a controlled crash.
Implementation Method 1
The barrel-like gas outlets ensure that the projectiles are accelerated in a directed manner
Implementation Method 2
compressed gas generated by the gas pressure weapon can flow into the gas inlet chamber and the gas outlets
Implementation Method 3
The contact portion is formed of polytetrafluoroethylene (PTFE) or coated with polytetrafluoroethylene (PTFE). The use of polytetrafluoroethylene (PTFE) can ensure that the projectiles can be accelerated in the gas outlets with little friction
Data Source
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AI summary
The invention relates to an attachment module for a firearm, in particular a gas-pressure gun, comprising: a gas inlet chamber (30); multiple continuous gas outlets (12) that are fluidically connected to the gas inlet chamber (30), wherein the gas outlets (12) run at an angle in relation to a longitudinal axis (LA) of the attachment module (10), are distributed in the circumferential direction about the longitudinal axis (LA), and have a respective gas outlet opening; a net receiving chamber (40) separated from the gas inlet chamber (30) and the gas outlets (12), wherein the gas outlets (12) are distributed in the circumferential direction about the net receiving chamber (40), and wherein the net receiving chamber (40) has a net outlet opening; an interception net (42) connected to multiple projectiles (14), wherein the number of projectiles (14) corresponds to the number of gas outlets (12), wherein the interception net (42) is accommodated in the net receiving chamber (40) and a projectile (14) is inserted in each gas outlet (12), wherein the projectiles (14) are designed in such a way that they are substantially synchronously driven through the respective gas outlet (12), using a gas pressure built up in the gas inlet chamber (30), and pass out of the respective opening, such that the interception net (42) is withdrawn from the net receiving chamber (40) and unfolded in mid-air.