Spacecraft Power Transition via Vacuum Detection
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Solution Overview
Problem
The existing umbilical connection system for spacecraft launches is costly and complex, and its removal complicates the transition from a power-saving state to a power-consuming state during deployment, as satellites rely on battery power until solar arrays are operational, which can drain quickly due to prolonged storage and launch processes.
Innovation Solution
A spacecraft system with sensors and a monitoring device that autonomously activates power-consuming systems based on detected conditions, such as altitude, eliminating the need for an umbilical connection and allowing power-saving states until deployment, using low-power vacuum detection devices to determine when to switch to a power-consuming state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If umbilical connections are used to provide power and control during launch, then the satellite can transition from power-saving to powered-on mode reliably, but the launch system becomes more expensive and complex
Solution Approach 1:
The patent removes the umbilical connection from the launch system, extracting the power and control functions from the external launch vehicle infrastructure. The satellite becomes self-sufficient by using its own sensors to detect deployment conditions and activate power-consuming systems autonomously, eliminating the need for complex umbilical connections while maintaining reliable power transition.
Solution Approach 2:
The satellite performs self-service by autonomously detecting its deployment status through onboard sensors (such as vacuum sensors detecting the space environment) and automatically activating its power-consuming systems without external control signals. This self-service mechanism replaces the umbilical connection's control function, reducing launch system complexity while ensuring reliable power transition.
2Device complexity
If umbilical connections are removed to simplify the launch system, then launch complexity decreases, but the satellite cannot reliably detect deployment to activate power-consuming systems
Solution Approach 1:
The patent replaces the mechanical/electrical umbilical connection system with an environmental sensing system. The satellite uses vacuum sensors to detect the transition from atmospheric pressure (during launch) to vacuum (in space), providing reliable deployment detection without mechanical connections. This substitution maintains detection reliability while simplifying the launch system.
Solution Approach 2:
The patent introduces an intermediary environmental parameter (vacuum level) as a mediator between the deployment event and the power activation response. The vacuum sensor detects the environmental change caused by deployment and translates it into a trigger signal for activating power-consuming systems, providing reliable indirect detection without direct mechanical or electrical connections.
3Use of energy by moving object
If the satellite remains in power-saving state during prolonged storage and launch processes, then battery power is conserved, but the battery may be completely drained before deployment
Solution Approach 1:
The patent implements a feedback mechanism where the vacuum sensor continuously monitors the environmental pressure and provides real-time information to the power management system. When the sensor detects the vacuum condition indicating space deployment, it triggers immediate activation of power-consuming systems. This feedback loop ensures the satellite maintains power-saving mode during launch while guaranteeing operational readiness upon deployment.
Solution Approach 2:
The patent prepares the power system in advance by pre-charging the battery before launch and configuring the autonomous activation system. The vacuum detection system is pre-programmed to recognize deployment conditions and automatically activate power-consuming systems without delay. This preliminary preparation ensures the satellite can transition from power-saving to powered-on mode instantly upon deployment, maintaining operational readiness.
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 cost-effective and efficient transition from a power-saving to a power-consuming state without the need for umbilical connections, reducing launch complexity and preventing battery drain by autonomously activating systems at the appropriate time post-launch.
Implementation Method 1
low-power vacuum detection devices to determine when to switch to a power-consuming state
Data Source
AI summary
Embodiments of the present disclosure are directed to techniques for transitioning a spacecraft from a power-saving state to a power-consuming state at a time after launch of the spacecraft on a launch vehicle. Because the spacecraft can detect conditions for transitioning to the power-consuming state, commands received via an umbilical connection to the launch vehicle, or detecting the presence or absence of such a connection, is unnecessary, thereby removing several technical barriers to eliminating such umbilical connections altogether.