Accession Number:

ADA517375

Title:

A Structural Dynamic Analysis of a Manduca Sexta Forewing

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT

Personal Author(s):

Report Date:

2010-03-01

Pagination or Media Count:

136.0

Abstract:

Micro air vehicles MAVs are intended for future intelligence, surveillance, and reconnaissance use. To adequately fulfill a clandestine capacity, MAVs must operate in close proximity to their intended target without eliciting counter-observation. This objective, along with DARPAs constraint of a sub-15 centimeter span, requires future MAVs to mimic insect appearance and flight characteristics. This thesis describes an experimental method for conducting a structural analysis of a Manduca Sexta hawkmoth forewing. Geometry is captured via computed tomography CT, and frequency data is collected using laser vibrometry in air and vacuum. A finite element FEmodel is constructed using quadratic beams and general-purpose shell elements, and a linear dynamic analysis is conducted. A preliminary verification of the FE model is carried out to ensure the Manduca Sexta forewing is adequately characterized, providing a basis for future fluid-structural interaction computations. Included is a study regarding the aeroelastic effects on flapping-wing insect flight, and an analysis of the structural dynamic anomalies of conventional, flat, semi-rigid flapping wings.

Subject Categories:

  • Pilotless Aircraft
  • Military Intelligence

Distribution Statement:

APPROVED FOR PUBLIC RELEASE