Cannon Casing Ejection Duct for Efficient Handling

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Solution Overview

Problem

Existing weapon systems struggle to efficiently and quickly handle and direct different types of ammunition components, leading to inefficiencies in ammunition handling and deployment.

Innovation Solution

A cannon system with a turret assembly and ammunition feed unit that allows for the alignment of multiple magazines around a traverse path, enabling the turret assembly to position the ammunition feed unit to receive ammunition from different magazines, and an ammunition transport system to deliver components to the firing chamber, with the turret assembly being rotatable and pivotable for efficient ammunition handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a single ammunition storage rack is used in existing weapon systems, then the structure is simple, but the ammunition handling speed and efficiency are insufficient

Engineering Contradiction:
Improveammunition handling speedVSAvoidammunition feed unit structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The ammunition storage system is segmented into multiple racks (first rack, second rack, third rack, fourth rack) arranged around the traverse path, with each rack serving a specific angular position. This segmentation enables parallel ammunition loading from multiple directions, significantly improving handling speed while maintaining manageable structural complexity through modular design

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from a single linear ammunition storage rack to a three-dimensional arrangement of multiple racks positioned at different angular locations around the traverse path. This spatial dimensionality change allows the ammunition feed unit to access ammunition from multiple directions simultaneously, enhancing productivity without proportionally increasing complexity

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If multiple magazines are positioned around the traverse path, then ammunition type versatility is improved, but the system complexity increases

Engineering Contradiction:
Improveammunition type handling capabilityVSAvoidammunition supply system
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Each magazine rack is designed with universal functionality to handle different ammunition types (HE shells, smoke shells, illumination shells, training shells) while maintaining a consistent structural design. The ammunition feed unit and transport system serve all racks uniformly, achieving versatility without proportionally increasing system complexity through standardized interfaces and procedures

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

Different angular positions around the traverse path are assigned to different magazine racks, with each location optimized for specific ammunition types based on tactical requirements. This local differentiation enables versatile ammunition handling while maintaining overall system simplicity through consistent rack designs at each position

Inventive Principle:
Principle #3Local quality

3Speed

If the turret assembly is made rotatable and pivotable for efficient ammunition handling, then the ammunition delivery speed is improved, but the mechanical complexity increases

Engineering Contradiction:
Improveammunition delivery speedVSAvoidturret assembly mechanism
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The turret assembly incorporates rotational and pivotal movements to dynamically position the ammunition feed unit at different angular locations around the traverse path. This dynamic positioning enables rapid ammunition delivery from multiple magazine racks while the mechanical complexity is managed through integrated drive mechanisms and standardized mounting interfaces

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The ammunition feed unit serves as an intermediary component that receives ammunition from multiple fixed magazine racks and delivers it to the cannon. The rotatable and pivotable turret assembly positions this intermediary at optimal locations, improving delivery speed while the standardized intermediary design prevents excessive complexity increase

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP4617611A1Further improvements in an relating to weapon sub-system
Publication Date: 2025.09.17 BAE SYSTEMS PLC
  • EP4617611A1 patent drawingFigure 1~2
  • EP4617611A1 patent drawingFigure 3~4
  • EP4617611A1 patent drawingFigure 5~6

AI summary

A cannon system (10) which forms part of a weapon sub-system, the cannon system (10) configured for firing an ammunition component (30). The ammunition component (30) comprises a casing (32). The cannon system (10) comprises a cannon (104) provided with a firing chamber (110), the firing chamber (110) has an inlet (190) for receiving an ammunition component (30) and an outlet (192) for the ejection of the ammunition casing (32). There is provided a duct (193) with an inlet (194) and an outlet (195), the duct inlet (194) is aligned with the firing chamber casing outlet (192) and is configured for receiving the casing (32) from the firing chamber casing outlet (192). The duct (193) defines a guide path for transport of the casing (32) from the duct inlet (194) to the duct outlet (195). The duct outlet (195) is configured for allowing the passage of the casing (32) therethrough.