Landing Gear Cylindrical Segmentation for Reusable Shock Absorption
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Solution Overview
Problem
The existing landing gear for flight vehicles is prone to deformation upon landing, necessitating frequent replacement, which increases operational costs and environmental impact, prompting the need for a reusable solution.
Innovation Solution
A landing gear system comprising a first cylinder structure coupled to the flight vehicle and a second cylinder structure that can move and rotate relative to the first, allowing switching between stowed and released states through axial movement and rotation, eliminating the need for frequent replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a honeycombed core portion is used for shock absorption, then collision energy can be absorbed during landing, but the landing gear becomes deformed and requires frequent replacement
Solution Approach 1:
The landing gear is divided into multiple cylindrical sections (first cylinder structure and second cylinder structure) that can move and rotate relative to each other. This segmentation allows the structure to absorb shock through controlled deformation and recovery, rather than permanent deformation of a fixed honeycombed core.
Solution Approach 2:
The landing gear transitions from a static honeycombed structure to a dynamic system with movable cylindrical sections that can change their relative positions and orientations. The ability to switch between stowed and released states through axial movement and rotation enables the structure to adapt to landing impacts and recover its shape for reuse.
2Reliability
If the landing gear is designed for single-use with honeycombed structure, then shock absorption is effective, but operational costs increase due to frequent replacement
Solution Approach 1:
Instead of discarding the landing gear after single use, the invention enables recovery and reuse through the reversible movement and rotation of cylindrical sections. The structure can transition from a deployed landing state to a stowed state, allowing the same gear to be used multiple times without replacement.
3Productivity
If a reusable landing gear is designed, then operational costs decrease, but the structure becomes more complex
Solution Approach 1:
The first cylinder structure and second cylinder structure are nested within each other, with the second cylinder structure positioned inside the first. This nesting arrangement allows the landing gear to be compact when stowed while providing the necessary complexity for movement and rotation when deployed, reducing overall structural complexity compared to extended configurations.
4Duration of action of stationary object
If the landing gear uses movable and rotating cylindrical structures, then reusability is achieved, but the mechanism becomes more complex
Solution Approach 1:
The cylindrical structures serve multiple functions: they provide structural support, enable shock absorption through controlled movement, allow rotation for orientation adjustment, and facilitate transition between stowed and released states. This multi-functionality reduces the need for separate components, thereby reducing overall mechanism complexity despite the added capability for reusability.
Data Source
AI summary
A landing gear for a flight vehicle is used during landing. The landing gear for a flight vehicle includes a first cylinder structure configured to have an upper end which is coupled to be able to roll with respect to the flight vehicle; and a second cylinder structure configured to have a lower end which is able to come into contact with the ground, configured to be able to relatively move in an axial direction along a reference axis with respect to the first cylinder structure, and configured to be able to relatively rotate about the reference axis with respect to the first cylinder structure. The first cylinder structure and the second cylinder structure switch the landing gear between a stowed state and a released state by means of the relative movement and the relative rotation.