Date of Award

2021

Document Type

Thesis

Degree Name

Master of Science in Engineering (MSE)

Department

Mechanical and Aerospace Engineering

Committee Chair

Chang Kwon Kang

Committee Member

Farbod Fahimi

Committee Member

Kyong-Ho Roh

Subject(s)

Monarch butterfly, Wings (Anatomy)--Aerodynamics, Flight

Abstract

Monarch Butterflies are capable of flying over 4000 kilometers as they migrate from North America to Mexico. In regard to the aerodynamic mechanisms that drive this extensive flight, little is known. This thesis is motivated by the hypothesis that their flapping wing flight is enhanced by fluid-structure interactions. The objective was to quantify the aeroelastic performance of a real monarch butterfly wing at flapping amplitudes near monarch free-flight amplitudes. The performance of the real monarch butterfly wing was tested by measuring the wing motion and lift at a flapping amplitude of 55° and frequencies between 7.0 and 14.4 Hz. The wing produced a peak lift at 10.3 Hz, approximately the flapping frequency of a live monarch butterfly, with a maximum force of 8.4 mN, sufficient to lift a butterfly's weight. The pitch amplitude increased linearly as the frequency increased with the pitch amplitude at the peak lift being 15.8°.

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