Point Landing Gear Analysis
- Smile Khatri
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Task Description
Simulate Pegasus landing gear.
Constraints
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Assignees
Assignee | Asana Task | Date |
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@Smile Khatri | link to asana task assigned | Date assigned |
Task Progression/Updates
Author: Smile Khatri updating Date: 2024/02/03
Simulation #1
The goal of this simulation is to identify stress distributions in the current point landing gear design to help inform future designs.
To simplify the simulation, only one leg of the landing gear is studied.
Fixture condition is indicated by the green arrows. The inner cylindrical face which is coincident with the X-frame tubes is fixed.
A force of 15 N is applied on the bottom cap to impose a ‘sliding’ effect. The max weight of Pegasus is aimed to be 8 kg. So Fg ~ 80 N. To overestimate the force, a force of 85 N was applied parallel to the bottom face of the cap.
Material Properties:
The T-joint and end cap are 3D printed material:
The carbon fiber tube has the following properties:
The yield strength was not provided in the website so the tensile strength value was used in place of yield strength. Although these are not the same, it is okay for this simulation because the stress on the tubes is far below the tensile strength.
Stress Results:
Interestingly, the maximum stress occurs in the carbon fiber tubes, however, it is still below the yield strength. Next steps would be to conduct proper calculations to find forces at different crashing conditions.