Slap Plate Shock Amplification for Space Launch Simulation
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Solution Overview
Problem
Simulating the extreme shock and vibrations experienced during space vehicle launches is challenging due to the high costs and complexities of using explosives or electrodynamic exciters, which are difficult to control and require expensive modifications.
Innovation Solution
A system utilizing a slap plate attached to a shaker armature of a shaker table system, with a specific attachment arrangement and configuration, to amplify and control the shock forces imparted to test specimens, allowing for the simulation of high-energy shock events like pyrotechnic events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If actual pyrotechnic materials (explosives, primer cords) are used to simulate shock events, then the simulation accuracy and realism are improved, but the cost, time consumption, and difficulty of control increase significantly
Solution Approach 1:
The patent creates a simplified copy of pyrotechnic shock events using a slap plate mechanism that replicates the essential characteristics (high-energy impulse, random vibration) without using actual explosives. The slap plate strikes the shaker armature to generate shock waves that mimic pyrotechnic events, achieving simulation accuracy while eliminating the complexity and hazards of handling real pyrotechnic materials
Solution Approach 2:
The patent replaces the chemical-mechanical system of pyrotechnic explosions with a controlled mechanical impact system. The slap plate, driven by a motorized shaker, substitutes for explosive charges by creating equivalent shock waves through mechanical striking, thereby eliminating the need for explosives while maintaining shock simulation effectiveness
2Ease of operation
If electrodynamic exciters or impact hammers are used to simulate high-energy shock events, then the control and repeatability are improved, but expensive modifications to the shaker system are required
Solution Approach 1:
The slap plate mechanism serves multiple functions: it acts as both the shock source and the vibration generator, eliminating the need for separate electrodynamic exciters or impact hammers. The same shaker system can perform both routine vibration testing and high-energy shock simulation by simply attaching or removing the slap plate, providing universal functionality without expensive modifications
Solution Approach 2:
The slap plate is a simple, inexpensive mechanical component that can be easily manufactured and replaced. Unlike expensive electrodynamic exciters requiring system modifications, the slap plate is a low-cost accessory that achieves high-energy shock generation through simple mechanical striking, making the system more economical and easier to modify
3Force
If a slap plate is attached to the shaker armature to amplify shock forces, then the shock energy and simulation capability are improved, but the risk of damage to the shaker system increases
Solution Approach 1:
The slap plate is designed with controlled attachment characteristics that allow it to strike the armature with high force while the attachment arrangement prevents excessive damage. The fasteners and mounting configuration are specifically designed to absorb and distribute the impact forces, protecting the shaker system from damage while still generating sufficient shock energy for testing
Solution Approach 2:
The attachment arrangement allows the slap plate to dynamically interact with the shaker armature during operation. The plate can strike with high force during shock events while the attachment system flexes or yields to prevent permanent damage, and can be easily replaced if worn. This dynamic approach allows high shock forces while maintaining system reliability through controlled, replaceable components
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
This approach enables cost-effective and controlled simulation of high-energy shock events, allowing for the testing of electronic components and devices for their ability to withstand space launch conditions without the need for expensive modifications or actual pyrotechnic materials.
Implementation Method 1
a slap plate attached to a shaker armature of a shaker table system to impart a shock to any object being tested by the system. The shock is amplifiable by use of the first slap plate compared to the object being coupled to the shaker armature without the first slap plate.
Data Source
AI summary
A system for inducing shock may include a first slap plate attached to a shaker armature of a shaker table system to impart a shock to any object being tested by the system. The shock is amplifiable by use of the first slap plate compared to the object being coupled to the shaker armature without the first slap plate. The system may also include a specific attachment arrangement for attaching the first slap plate to the shaker armature. The specific attachment arrangement and a configuration of the first slap plate may be selected to control a level of shock imparted to the object being tested.