For future unmanned aerial vehicles to be ubiquitous, they need to be safe to other aircraft and people on the ground even in the event of unintended collisions. Unfortunately, this is difficult for current rigid designs as a crash of all but the smallest aircraft will have a significant impact on its target. As an alternative, this pa-per explores using a soft tensegrity structure (interconnected cables and rods) as a lightweight, robust chassis for a UAS and analyze its ability to achieve stable, controllable flight and mitigate damage during a collision. Tensegrity structures are three dimensional geometric constructions which are able to undergo severe deformations without permanent damage, and can immediately return to their original shape. Experiments and analysis are performed using a simple physics simulation environment, allowing for rapid design iteration and thorough exploration of system behavior. We test multiple configurations of the vehicle to understand impacts of changing various physical characteristics, and take limitations such as modern propeller thrust coefficients and motor speeds into account to ensure our results are inline with those of a real world vehicle. We ultimately find that such a vehicle has considerable real world potential, and that a physical prototype could theoretically be constructed and flown with current technology.
Feasibility Analysis of Unmanned Aerial Vehicle Based on Tensegrity Structure
2021-03-01
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