Circular Arch Payload Separation for Debris-Free Release
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Solution Overview
Problem
Existing separation systems for launch vehicles and spacecraft face challenges in providing reliable and strong connections that can be tested and released effectively without generating debris or concentrating loads, while minimizing complexity and part count.
Innovation Solution
A payload separation system utilizing two circular arch elements connected by interleaved voussoirs and a compression band, with chamfered cutouts and radial ejection pins, allowing for distributed load support and controlled release using a motor-actuated chamfered compression band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If pyrotechnic bolts are used for separation, then separation force is generated, but large shock forces and debris generation occur
Solution Approach 1:
The patent replaces pyrotechnic bolts with a mechanical compression band system that uses a circular arch structure with interleaved voussoirs. The separation is achieved through controlled mechanical compression and release rather than explosive forces, eliminating debris generation while maintaining separation capability.
Solution Approach 2:
The patent changes the physical state and mechanism of force application from explosive (pyrotechnic) to controlled mechanical compression. The compression band applies gradual, controllable force through the circular arch structure, allowing for testable and predictable separation behavior without the shock forces of pyrotechnic materials.
2Object-generated harmful factors
If non-pyrotechnic separation nuts are used, then debris is reduced, but holding strength is reduced due to split restraint
Solution Approach 1:
The patent divides the restraint structure into multiple voussoirs (arch segments) that work together to provide holding strength. Instead of a single split nut, the circular arch is segmented into multiple load-bearing elements distributed around the circumference, collectively providing the strength of a traditional nut-bolt connection without the debris issues.
Solution Approach 2:
The patent uses a circular arch geometry to distribute and reinforce the holding strength. The curved arch structure provides inherent structural strength and rigidity, allowing the restraint mechanism to maintain strong holding capability while being debris-free.
3Reliability
If complex securing mechanisms are used, then connection reliability is improved, but load path structure is compromised due to concentration of loads across multiple small interfaces
Solution Approach 1:
The patent segments the load path into multiple distributed interfaces around the circular arch circumference. Instead of concentrating loads at a single complex mechanism, the load is distributed across multiple voussoir interfaces, reducing stress concentration while maintaining reliability through redundancy.
Solution Approach 2:
The patent transitions from a single-point or few-point connection to a distributed circular arc connection. By adding the dimensional aspect of circumferential distribution, the system maintains reliability while eliminating load concentration at specific interfaces.
4Device complexity
If simplified separation systems are used, then device complexity is reduced, but load capability is insufficient
Solution Approach 1:
The patent employs a circular arch structure that provides inherent structural strength and rigidity. The curved geometry naturally distributes loads efficiently, allowing the system to achieve high load capability without requiring complex mechanical components, thus maintaining simplicity while enhancing strength.
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
Provides superior structural strength, reliable 'Must Hold' and 'Must Release' functionality, tested repeatedly, with minimized risk of jamming and debris, and reduced part count.
Implementation Method 1
a compression band to hold the two circular arch elements together
Implementation Method 2
Structural engineers consider a circular arch an extremely strong self-supporting structure. A circular form of an arch utilizes voussoirs set in a circle which are compressed with an external compression band. The external compression forces are distributed laterally in a circular path.
Implementation Method 3
two circular arch elements with interleaved voussoirs connecting a payload to a launch vehicle
Data Source
AI summary
This disclosure relates generally to a payload separation system utilizing a circular arch connective mechanism for connecting and releasing a payload from a launch vehicle. The apparatus of the invention is particularly useful for spacecraft and other vehicular separation mechanisms.