Modular Space Transit Tug Propulsion System
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Solution Overview
Problem
Current spacecraft lack robust propulsion systems for significant orbit changes and transporting vessels to repair facilities in space due to the cost of deploying additional weight in space.
Innovation Solution
A standard transit tug with a frame, chemical tanks, nozzles, solar cell arrays, and a computer system for propulsion, power, and attitude control, allowing for adaptable and efficient movement and transportation of spacecraft in space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If robust propulsion systems are added to spacecraft for significant orbit changes and transportation, then the ability to move and transport vessels in space is improved, but the cost of deploying additional weight into space increases
Solution Approach 1:
The propulsion system is divided into separate modular components: chemical tanks (oxidizer and propellant), nozzles, valves, and a frame structure. Each component can be independently deployed, assembled, or replaced in space, allowing the propulsion capability to be added without deploying a complete heavy system at once.
Solution Approach 2:
The transit tug design with standardized frame, docking adapters, and modular tanks creates a universal platform that can serve multiple spacecraft and missions. The same tug architecture can be used for different orbit changes, transportation tasks, and even serve as a repair facility, maximizing the utility of the deployed weight.
2Adaptability or versatility
If modular chemical tanks with refueling capability are implemented, then the adaptability and operational duration of the tug is improved, but the device complexity increases
Solution Approach 1:
Access valves are pre-installed on each chemical tank, and the tank design includes predetermined attachment and detachment mechanisms. This preliminary preparation enables refueling and replacement operations to be performed efficiently without requiring complex real-time decision-making or intricate assembly procedures during space operations.
Solution Approach 2:
The tank design with access valves and standardized interfaces enables self-contained refueling and replacement operations. The system can service itself through automated or teleoperated valve operations and tank exchanges without requiring extensive external intervention or complex support infrastructure.
3Measurement precision
If multiple nozzles with flow regulation valves are added for precise orientation and propulsion, then the control precision and maneuverability are improved, but the device complexity and weight increase
Solution Approach 1:
Different nozzles are strategically positioned and sized for specific functions: some nozzles provide primary propulsion thrust, while others provide fine-tuning for orientation control. Each nozzle-valve combination is optimized for its local function, allowing precise control without requiring all nozzles to be equally complex.
Solution Approach 2:
The computer system electronically controls the nozzle valves, replacing complex mechanical linkages with electronic actuation. This substitution reduces mechanical complexity while maintaining precise flow regulation capability through electronic signal control of valve operations.
4Use of energy by moving object
If solar cell arrays are made independently pivotal for optimal power generation, then the energy efficiency is improved, but the device complexity and weight increase
Solution Approach 1:
The solar cell arrays are designed with pivotal mounting that allows them to dynamically adjust their orientation in response to the spacecraft's attitude changes and solar position. This dynamic adaptation maximizes power generation efficiency without requiring overly complex active control mechanisms, utilizing the natural motion of the tug to maintain optimal solar exposure.
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 efficient and adaptable propulsion and transportation of spacecraft, including satellites, to desired orbits and locations, with modular design and refueling capabilities in space, enhancing space exploration capabilities.
Implementation Method 1
A plurality of solar cell arrays are disposed on the outer periphery of the frame
Implementation Method 2
at least one tank comprised of an oxidizer and one tank comprised of a propellant
Implementation Method 3
A plurality of nozzles is disposed on the outer periphery of the frame and each nozzle has a valve for regulating the flow of the oxidizer and fuel from the tanks
Data Source
AI summary
A standard transit tug is disclosed. The tug can dock with spacecraft to provide propulsion for the spacecraft. Further, the tug may dock with other specialty tugs to form a custom transport system.