Rocket Module Separation Mechanism Pneumatic Actuation
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Solution Overview
Problem
Existing rocket module separation mechanisms often rely on explosives, causing vibrations and structural disturbances, and lack scalability and reliability, especially for smaller diameters and high aerodynamic drag conditions.
Innovation Solution
A non-explosive module separation mechanism using a cylindrical first and second body connected by a ring with tension locks and radially mounted actuators, such as gas springs, allowing for controlled disengagement and sealing, with a design that maximizes internal diameter and minimizes separation forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If explosives are used for module separation, then separation force is sufficient, but vibrations and structural disturbances are generated
Solution Approach 1:
The patent replaces the explosive chemical system with a pneumatic system using a bladder and gas generator. The gas generator produces gas that inflates the bladder, which then expands to separate the modules. This substitution eliminates explosions while providing sufficient separation force through pneumatic pressure.
Solution Approach 2:
The invention employs a pneumatic separation mechanism where a gas generator produces gas to inflate a bladder. The inflated bladder expands radially to push the modules apart. This pneumatic system provides controlled, non-vibrating separation force that avoids the harmful effects of explosives.
2Reliability
If explosives are used for module separation, then separation is achieved, but safety risks to personnel increase
Solution Approach 1:
The patent eliminates explosive materials entirely in favor of a pneumatic system. The gas generator and bladder mechanism provides reliable separation without the safety hazards associated with handling and detonating explosives, thereby protecting personnel while maintaining separation reliability.
3Force
If explosives are used for module separation, then separation force is generated, but large quantities of sharp fragments are produced
Solution Approach 1:
The pneumatic separation system using a gas generator and inflatable bladder produces separation force through gas pressure expansion. This method generates no sharp fragments or debris, as the bladder and gas generator are designed to expand smoothly without creating hazardous fragments that could damage nearby components.
4Ease of operation
If release mechanism is located externally, then handling is simplified, but aerodynamics are negatively affected
Solution Approach 1:
The patent integrates the release mechanism components (gas generator, bladder, and associated structures) within the internal volume of the rocket body, nesting them in a way that does not protrude externally. This allows the mechanism to be handled and activated while maintaining clean aerodynamic surfaces, eliminating the trade-off between handling accessibility and aerodynamic performance.
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 mechanism effectively separates rocket modules with reduced vibrations and increased reliability, scalability, and through-diameter capacity, suitable for smaller diameters and high aerodynamic conditions, while ensuring structural integrity and safety.
Implementation Method 1
The first body further comprises at least one pushing member adapted to axially eject the second body from the first body on disengagement of the ring from the first body and the second body
Data Source
AI summary
A module separation mechanism, in particular for rockets, includes a cylindrical first body, a cylindrical second body, and a ring connecting the two bodies, The ring comprises at least one tension lock together with a cover. The first body comprises at least one radially mounted actuator that is adapted to eject the tension lock together with the cover from the ring in a manner to disengage the ring. The first body further comprises at least one ejecting member adapted to eject the second body from the first body. The outer surface of the ring together with the cover is faced with the outer surface of the first body and the second body.