Microgravity Plant Growth With Enclosed Root-Chamber Fluid Recovery
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Solution Overview
Problem
Growing plants in microgravity environments poses challenges due to fluid behavior differences, the need for soil or particulate media increasing mass, and altered plant growth patterns, which are not addressed by existing systems like hydroponics and aeroponics.
Innovation Solution
A plant growth system with an enclosed root chamber and root/shoot interface, utilizing hydroponic and aeroponic delivery systems, capillary forces, and a clearing system to manage fluid movement, and an imaging system for monitoring root growth, all designed for microgravity environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soil or particulate media is used for plant growth in space, then plant growth is supported, but the mass that must be transported into and maneuvered through space increases
Solution Approach 1:
The patent removes the soil/particulate media from the plant growth system, extracting only the essential function of nutrient delivery. This is achieved through a hydroponic system where nutrients are delivered directly to roots via liquid solution, eliminating the need for heavy soil mass while maintaining plant growth support.
Solution Approach 2:
The patent employs a hydroponic system using liquid nutrient solutions delivered through hydraulic means. The system includes reservoirs, pumps, and tubing to circulate nutrient-rich liquid directly to the plant roots, replacing the mechanical support function of soil with a fluid-based delivery system that significantly reduces mass.
2Weight of moving object
If conventional hydroponics or aeroponics systems are used, then mass is reduced, but fluid movement and recovery become challenging in microgravity
Solution Approach 1:
The patent counteracts the microgravity effect on fluid movement by using capillary forces and surface tension. The system incorporates wicking materials and capillary channels that actively draw liquid upward and through the system without relying on gravity, effectively creating an anti-gravity fluid transport mechanism.
Solution Approach 2:
The patent introduces wicking materials and capillary structures as intermediaries between the liquid reservoir and plant roots. These intermediaries facilitate fluid movement through capillary action, mediating the transfer of nutrients in a way that works independently of gravitational forces and enables easy fluid management in microgravity.
3Adaptability or versatility
If plants are grown in microgravity, then space cultivation is enabled, but plant growth patterns become altered and less predictable
Solution Approach 1:
The patent optimizes multiple parameters including nutrient solution concentration, delivery frequency, light spectrum and intensity, and humidity levels to compensate for microgravity effects. By carefully adjusting these parameters, the system creates optimal growth conditions that promote consistent plant development patterns despite the altered gravitational environment.
Solution Approach 2:
The patent incorporates monitoring systems that track plant growth parameters and provide feedback to the control system. This allows real-time adjustments to nutrient delivery, lighting, and environmental conditions, ensuring consistent growth patterns by actively responding to plant needs and microgravity effects throughout the growth cycle.
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 reliable plant growth in space by reducing mass and cost, allowing for efficient nutrient delivery and monitoring, while maintaining plant health and visibility.
Implementation Method 1
The plant growth system includes an enclosed root chamber with a root/shoot interface. The root system extends through one side of the root/shoot interface into the root chamber and the shoot system extends through an opposite side of the root/shoot interface outside the root chamber.
Data Source
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AI summary
A plant growth system for a microgravity environment includes a root chamber configured to prevent liquid from escaping from the root chamber in the microgravity environment and to enable recovery of liquid from within the root chamber. In some embodiments, the root chamber may be configured to provide water and/or nutrients to the plants, via ebb/flow and/or spray delivery. In some embodiments, the root chamber includes a main body and a root/shoot interface coupled to the main body. The root/shoot interface can be configured to hold a plant having a root system extending outward from one side of the root/shoot interface into the root chamber and a chute system extending outward from another side of the root/shoot interface outside of the root chamber. The root/shoot interface may be configured to provide water and/or nutrients to the plants.