Hydraulic Coupling System for Launcher Thruster Fueling
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Solution Overview
Problem
Current fueling systems for cryogenic thrusters face challenges in reliably disconnecting pipework during launch without causing irreversible separation, leading to time-consuming reconfiguration and risk of damage if reconnection is needed after a launch abort.
Innovation Solution
A fueling device with a ground module and an on-board module connected via a hydraulic coupling system, where a first annular enclosure maintains hydraulic communication by suction, allowing the modules to remain connected even if the launch is aborted, simplifying and ensuring reliable reconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cryogenic arms with valve plates are used for fueling, then the pipework can be disconnected at lift-off, but irreversible separation occurs if launch is aborted, requiring time-consuming reconfiguration
Solution Approach 1:
The coupling system transitions from a static mechanical connection to a dynamic system that can adapt its state. The ground plate and on-board plate remain mechanically connected throughout the launch sequence, with the coupling mechanism allowing controlled separation only at the desired moment, preventing irreversible separation during abort scenarios
Solution Approach 2:
The mechanical connection between ground and on-board plates is established in advance and maintained throughout the launch sequence. The coupling system is pre-configured to remain connected, eliminating the need for reconfiguration after abort and enabling immediate resumption of operations
2Reliability
If the cryogenic arm is retracted late during launch, then the connection remains secure, but there is a risk of damaging the fueling device
Solution Approach 1:
The coupling system allows for dynamic adjustment of the connection state. The ground plate and on-board plate can be separated at the precise moment of lift-off through controlled actuation, eliminating the risk of damage from late retraction while maintaining connection security during the critical launch phase
3Ease of operation
If mechanical unlocking actuators are used to separate plates, then separation can be achieved, but the system becomes complex and irreversible separation occurs on abort
Solution Approach 1:
The complex mechanical unlocking actuator system is removed entirely. Instead, a simplified coupling mechanism is used that allows the ground and on-board plates to remain connected throughout launch, with separation achieved through a simpler controlled release mechanism that prevents irreversible separation on abort
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
Enables quick and efficient reconnection without the need for full system reassembly, significantly reducing time, equipment, and manpower requirements, while minimizing the risk of damage during launch attempts.
Implementation Method 1
a first annular enclosure situated between the on-board plate and the ground plate around the hydraulic coupling system so that, when connected to suction, it enables the on-board plate and the ground plate to be held in a connected-together position
Data Source
AI summary
A fueling device for fueling the thrusters of a launcher is disclosed. The device includes a ground module and an on-board module. The ground module having at least: a ground pipe; a ground valve; and a ground plate provided with a ground passage, and the on-board module having at least: an on-board pipe; an on-board valve; and an onboard plate provided with an on-board passage. The device also includes a hydraulic coupling system between the onboard module and the ground module enabling fluid communication to be established between the ground passage and the on-board passage. A first annular enclosure is situated between the on-board plate and the ground plate around the hydraulic coupling system that, when connected to suction, enables the on-board plate and the ground plate to be held in a connected-together position.