Expandable Gravity Chamber for Inflatable Habitation Module
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Solution Overview
Problem
Extended exposure to zero-gravity environments in space stations leads to muscle and bone degeneration in humans, necessitating the creation of artificial gravity environments for health and comfort.
Innovation Solution
A collapsible habitation module with a gravity chamber that expands in space, featuring a rotating mechanism to simulate gravitational force using support bearings and an inflatable shell, allowing for exercise, rest, and work in an artificial gravity environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid gravity chamber is used to provide artificial gravity environment, then the health and comfort of occupants is improved, but the volume for transport becomes excessively large
Solution Approach 1:
The gravity chamber transitions from a collapsed low-volume state for transport to an expanded functional state for providing artificial gravity. The chamber includes expandable support structures and inflatable elements that allow it to dynamically change volume, maintaining rigidity when deployed while minimizing transport footprint.
Solution Approach 2:
The gravity chamber is designed to nest within itself or within the launch vehicle payload bay during transport. The support members and outer wall segments are configured to collapse into a compact arrangement that fits within the available transport volume, then expand to their functional configuration in space.
2Volume of stationary object
If the gravity chamber is expanded to provide sufficient space for human occupancy, then the living space is improved, but the structural complexity increases
Solution Approach 1:
The outer wall of the gravity chamber is divided into multiple outer wall segments that can be independently positioned and connected. These segments allow the chamber to expand to the required volume while simplifying the structural design, as each segment is smaller and lighter than a single monolithic wall would be.
Solution Approach 2:
The chamber utilizes inflatable elements and flexible membrane structures to achieve the required volume with minimal material. The inflatable outer wall segments can be inflated to their operational shape, providing large internal volume while maintaining lightweight construction and reduced structural complexity.
3Ease of operation
If the drive mechanism directly contacts the inner cylindrical structure to rotate the gravity chamber, then the rotational control is improved, but the noise level increases
Solution Approach 1:
The drive mechanism utilizes the outer race of the support bearing as an intermediary element to transfer rotational motion to the gravity chamber. By meshing the drive gear with the outer race teeth, the system achieves positive rotational control without the drive mechanism components directly contacting or transmitting noise into the habitable interior space.
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
The solution provides a healthy artificial gravity environment for space station occupants, reducing muscle and bone degeneration, and enabling comfortable living conditions by simulating gravitational forces through rotation, while being compact for transport and expandable for use.
Implementation Method 1
When in space, the gravity chamber is expanded for use by crew members. Therefore, the gravity chamber is able to fit in the payload of a space vehicle (e.g., a space shuttle) during transport, and is able to expand to a desired size for use on a space station or the like. When expanded, a drive mechanism rotates the gravity chamber on the support bearings about an axis to simulate a gravitational force within the gravity chamber.
Data Source
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AI summary
A habitation module with a gravity chamber that provides an artificial gravity environment. In one embodiment, the gravity chamber includes an inner cylindrical structure, outer wall segments that are attachable to one another to form an outer cylindrical wall, and opposing side walls having support members that are extendable. The gravity chamber has a first diameter when the support members are contracted, and has a larger second diameter when the support members are extended. The gravity chamber connects to the habitation module with rotating attachment members so that the gravity chamber rotates about an axis. The habitation module also includes an inflatable shell that encompasses the gravity chamber.