Helical Fragmentation Warhead for Rocket Interception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional defense systems against Ground to Ground (GTG) rockets are costly and inefficient due to the small vulnerable area of GTG rockets and the need for sophisticated interception techniques, which are challenged by the precession movement and unpredictable amplitudes of spinning rockets, requiring a large number of heavy fragments for lethal interception.
Innovation Solution
A fragmentation warhead configured with a helical arrangement of fragments, mounted in a carrier vehicle, which upon detonation, disperses fragments over a wide area to ensure lethal interception with a reduced number of fragments, utilizing a proximity fuse and a booster stage based on a GRAD rocket system to minimize costs and enhance intercept capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of heavy fragments are used for lethal interception, then the probability of hitting the small vulnerable area of GTG rockets improves, but the weight and cost of the interception missile increases significantly
Solution Approach 1:
The patent transforms the fragment distribution from a conventional spherical pattern to a helical/cylindrical distribution pattern. The fragments are arranged in helical paths around the missile's longitudinal axis, creating a cylindrical fragmentation zone that extends along the target's flight path. This dimensional change allows the same number of fragments to cover a larger effective area, improving the probability of intercepting the small vulnerable area of GTG rockets without increasing missile weight.
Solution Approach 2:
The patent employs curved helical trajectories for fragment distribution instead of straight radial lines. The fragments follow helical paths that wrap around the missile axis, creating a curved fragmentation pattern. This curvature allows fragments to distribute over a longer distance along the target path while maintaining compact missile dimensions, effectively increasing the interception envelope without proportionally increasing fragment count or weight.
2Device complexity
If conventional spherical fragmentation pattern is used, then the missile structure is simple, but the fragments are dispersed over a large volume reducing density and lethal effectiveness
Solution Approach 1:
The patent changes the fragmentation geometry from three-dimensional spherical dispersion to a two-dimensional helical/cylindrical distribution. Instead of fragments radiating in all directions from a central point, they are constrained to follow helical paths around the missile axis. This dimensional reduction concentrates the fragment energy density in a specific cylindrical zone along the target path, improving lethal effectiveness while maintaining relatively simple warhead structure.
3Ease of manufacture
If the vulnerable area of GTG rockets is small and surrounded by protective layers, then the rocket structure is simple and cost-effective, but achieving lethal interception requires sophisticated and costly defense systems
Solution Approach 1:
The patent implements preliminary action by pre-positioning fragments along helical paths before detonation. The fragmentation portion contains pre-formed helical structures that will automatically unfold into the desired helical distribution pattern upon explosive activation. This preliminary arrangement ensures that fragments are already positioned to cover the critical interception zone, eliminating the need for complex real-time guidance and control systems while maintaining high interception effectiveness against simple GTG rockets.
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 provides an effective and cost-efficient interception method capable of neutralizing GTG rockets with a reduced number of fragments, ensuring accurate targeting and minimizing the economic burden of defense systems while maintaining lethal effectiveness.
Implementation Method 1
the fragmentation portion is configured for fragmenting into a plurality of laterally adjacent sets of serially adjacent fragments in generally helical relationship with respect to the longitudinal axis, in response to detonation of the explosive charge
Implementation Method 2
a fixed shell portion and a fragmentation portion, and defining therebetween a cavity for accommodating therein an explosive charge
Data Source
AI summary
A fragmentation warhead is provided, capable of being mounted in a carrier vehicle, the warhead having a longitudinal axis. In at least one example the warhead includes a shell that extends along the longitudinal axis. The shell includes a fixed shell portion and a fragmentation portion, and defines therebetween a cavity for accommodating therein an explosive charge. The fragmentation portion includes at least one set of serially adjacent fragments in correspondingly serially contiguous relationship in the fragmentation portion and in generally helical relationship with respect to the longitudinal axis. A corresponding carrier vehicle and a corresponding missile are also provided.