Reusable Launch Vehicle Propulsion Unit Planar Cradle
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Solution Overview
Problem
Current reusable launch vehicles face challenges in the laborious and time-consuming process of dismantling and assembling rocket engines due to complex fluid and electrical linkages, which hinder frequent maintenance and replacement, necessary for optimal operational efficiency.
Innovation Solution
A thrust unit design featuring a cradle with a planar structure and universal links allows for easier access and orientation of the rocket engine, with all connections located on a single plane for simplified maintenance, and a handling assembly with guide rails and detachable support arms facilitates efficient disassembly and reassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rocket engine is connected with fluid and electrical links in the conventional arrangement, then the engine can be securely integrated into the spacecraft structure, but the dismantling and assembly process becomes particularly long and laborious due to difficult access to connection points
Solution Approach 1:
The connection points for fluid and electrical links are arranged on a planar surface (the dismantling plane) rather than distributed in three-dimensional space. This dimensional reorganization allows all connections to be accessed from a single side of the cradle, transforming a complex spatial arrangement into a manageable two-dimensional interface that significantly reduces dismantling time while maintaining secure integration
2Stability of the object's composition
If the connection points are positioned for secure engine integration, then the engine structure is stable, but the access for operatives to connect/disconnect links becomes particularly difficult
Solution Approach 1:
All fluid and electrical connection points are positioned on a single planar surface (dismantling plane) of the cradle, allowing operatives to access all connections from one side without needing to maneuver around the engine structure. This maintains structural stability while dramatically improving operational accessibility
Solution Approach 2:
The dismantling plane serves as a universal interface for all types of connections (fluid links, electrical links, and mechanical fixings), allowing a single access point to serve multiple functions and simplifying the maintenance process while maintaining secure engine integration
3Strength
If the cradle structure is designed to support the rocket engine securely, then the engine mounting is robust, but the assembly/dismantling operations become complex and time-consuming
Solution Approach 1:
The cradle is designed with a planar dismantling plane where all connections converge, transforming a complex three-dimensional disassembly task into a simpler two-dimensional operation. The robust engine mounting is maintained through traditional structural design, while the planar interface simplifies the assembly/dismantling process by organizing all connections on a single accessible surface
Data Source
AI summary
The invention relates to a propulsion unit for a reusable launch vehicle including a rocket engine supported by a cradle. According to the invention, the cradle includes at least three attachment elements for assembling the unit on the structure of the vehicle to which the unit is to be connected, the at least three attachment elements defining a plane for removing the unit, and in which the unit includes one or more fluid and/or electric links of the engine, each one of the links including a free end to be assembled with a corresponding circuit for supplying the vehicle, to which the unit is to be connected, the tip of at least some of the free ends being contained in the removal plane.