Reduced Order Modeling of an Autorotating Samara for Steady-State and Dynamic Analysis

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Abstract

This paper presents a reduced order model for describing the steady-state and dynamic behavior of a single-winged samara seed pod undergoing autorotative descent. Blade Element Theory is employed to capture the span-wise behavior of a samara. By neglecting lateral motion of the center of mass and prescribing a roll angle, a simplified and compact model is developed while retaining reasonable accuracy in comparison to experimental data published in the literature. Steady-state results confirm the validity of assuming a small roll angle, which helps reduce model complexity. Simulation of the dynamics yields reasonable transient behavior and convergence to equivalent steady-state values. Accuracy of the reduced order model suggests the plausibility of designing and controlling simple autorotative mechanisms.

Original languageEnglish
Pages (from-to)68-73
Number of pages6
JournalIFAC-PapersOnLine
Volume55
Issue number37
DOIs
StatePublished - 2022
Externally publishedYes
Event2nd Modeling, Estimation and Control Conference, MECC 2022 - Jersey City, United States
Duration: Oct 2 2022Oct 5 2022

Keywords

  • Aerodynamics
  • Autorotation
  • Bio-inspired motion
  • Dynamics
  • Model validation

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