Torsion Stop Deployment System for Airborne Projectiles
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Solution Overview
Problem
Conventional deployment systems for airborne projectiles face challenges in rapidly and precisely deploying flight control surfaces, leading to potential over-rotation and mechanical shock, which can impact aerodynamics and accuracy.
Innovation Solution
A torsion stop deployment system utilizing a resilient twist beam and torsion bar member to decelerate and secure deployable elements, such as fins, in the deployed position, minimizing shock and enabling precise locking and correction for over-rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional deployment systems use springs to rapidly accelerate fins through the deployed position, then deployment speed is improved, but fin positioning precision deteriorates due to over-rotation
Solution Approach 1:
A dashpot mechanism is introduced as an intermediary between the fin and the locking mechanism. This dashpot acts as a speed-regulating mediator that allows rapid fin movement while controlling the rate at which the fin approaches the deployed position, preventing over-rotation and enabling precise positioning by the locking mechanism.
Solution Approach 2:
The system transitions from a static spring-only approach to a dynamic system where the dashpot provides velocity-dependent resistance. The dashpot's friction-based damping creates a dynamic control mechanism that adapts to the fin's rotational speed, allowing fast deployment initially while automatically slowing the fin as it nears the deployed position for precise locking.
2Loss of time
If conventional deployment systems rapidly accelerate fins, then deployment time is reduced, but mechanical shock increases damaging auxiliary components
Solution Approach 1:
The dashpot serves as a shock-absorbing intermediary in the force transmission path. Instead of the spring directly transmitting high-impact forces to the fin and projectile, the dashpot's friction-based damping mechanism gradually dissipates kinetic energy, reducing mechanical shock while maintaining rapid deployment capability.
Solution Approach 2:
The dashpot provides beforehand cushioning by being pre-configured in the deployment path to absorb and dissipate energy before the fin completes its rotation and before the locking mechanism engages. This prevents shock waves from propagating through the projectile structure and damaging auxiliary components.
3Measurement precision
If precision locking mechanisms are used to secure fins in the deployed position, then positioning accuracy is improved, but reliability deteriorates when fin rotational speed is excessively high
Solution Approach 1:
The dashpot acts as a speed-regulating intermediary that ensures the fin approaches the locking mechanism at a controlled, reduced speed. This allows the precision locking mechanism to reliably engage with properly aligned mating components while maintaining the overall rapid deployment characteristic of the system.
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 system achieves rapid and precise deployment of flight control surfaces while reducing mechanical shock and ensuring accurate positioning, even during high-speed rotation, thereby enhancing aerodynamic performance and reducing potential damage to the projectile.
Implementation Method 1
a torsion bar member, comprising a resilient twist beam which is fixedly coupled to the airborne object and which is configured to come into engagement with the deployable element and resiliently resist the rotation of the deployable element
Data Source
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AI summary
Embodiments of a torsion stop deployment system for utilization onboard an airborne object are provided. In one embodiment, the torsion stop deployment system includes a deployable element hingedly coupled to the airborne object and rotatable from a non-deployed position to a deployed position. The torsion stop deployment system further includes a torsion bar member, which is fixedly coupled to the airborne object and which resiliently resists the rotation of the deployable element to reduce shock to the airborne object during deployment of the deployable element.