Projectile Brake Arrangement with Expanded Surface Area
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Solution Overview
Problem
Conventional brake systems for projectiles, such as brake washers, have limited braking ability and require complex mechanical designs or space in the detonator, making them inefficient for achieving short firing ranges.
Innovation Solution
A brake system with a larger braking surface area than the conventional πR2-πr2, configured as a truncated cone, truncated cone with bottom, truncated oblate ellipsoid of revolution, washer with edge, or washer with middle segment, featuring a through hole, to increase air resistance and braking effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional brake washer with surface area πR2-πr2 is used, then the braking arrangement is simple and requires no additional space in the detonator, but the braking ability is limited
Solution Approach 1:
The brake transitions from a flat two-dimensional washer to a three-dimensional structure with enhanced surface area through conical sides, bottom surfaces, and middle segments that protrude axially, utilizing the third dimension to increase braking effectiveness without adding radial complexity
Solution Approach 2:
The brake is divided into distinct functional segments including front braking surfaces, middle segments with through holes, and rear braking surfaces, allowing each segment to contribute independently to the overall braking effect while maintaining structural integrity
2Area of stationary object
If a mechanically deployable brake with four braking plates is used, then the braking surface is increased and encircles the projectile, but the mechanical complexity increases and space in the detonator is required
Solution Approach 1:
The brake is pre-configured in its final braking position between the detonator and projectile body before firing, eliminating the need for mechanical deployment mechanisms during flight while maintaining the required braking surface area
Solution Approach 2:
The brake integrates multiple functional elements including braking surfaces, through holes for gas passage, and structural support into a single unified component that performs all necessary functions simultaneously without requiring separate mechanical systems
3Reliability
If the brake surface area is increased beyond πR2-πr2, then the air resistance and braking effectiveness are improved, but the brake requires more space and complex configurations
Solution Approach 1:
The brake concentrates its volume in specific regions where it is most effective - between the detonator and projectile body - with conical sides and middle segments positioned to maximize air resistance without uniformly increasing volume throughout the entire structure
Solution Approach 2:
The brake incorporates through holes that create a porous structure, allowing propellant gases to pass through while the surrounding material provides braking surface area, effectively increasing braking effectiveness without proportionally increasing solid volume
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 enhanced brake configurations provide improved braking performance by increasing the surface area, allowing for shorter firing ranges without the need for complex mechanical designs or additional space in the detonator, and can be fabricated using various materials and manufacturing techniques.
Implementation Method 1
the brake is configured with a braking surface which is situated in the direction of travel of the projectile... to increase air resistance and braking effectiveness
Data Source
AI summary
In a brake for detachable arrangement on projectiles, the brake is configured with a surface which is situated in the direction of travel of the projectile, where the surface is larger than a surface given by πR2-πr2, where R is the outer radius of the brake and r is the inner radius of the brake. A method for braking projectiles is also provided.