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Flutter Analysis of Large Flexible Aircraft Based on Reduced Order Model

  • An Chao*
  • , Zhang Duoyao
  • , Xie Changchuan
  • *Corresponding author for this work
  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper developments approach for stable analysis in flight of large flexible aircraft. Considering geometrical nonlinearity, aircraft is divided into nonlinear wing components and linear fuselage component. Structural ROM method is used for wing structure modeling and nonlinear substructure method is used for comprehensive assembling wing ROM and fuselage linear modes together to obtain integrated aircraft dynamic equations. Non-planar double lattice method (DLM) is used as aerodynamic model. Stability analysis is based on the linearization around the trim configuration. The numerical results for a flexible flying wing aircraft model indicate coupling effects between rigid-body motions and elastic modes are important for this type of aircraft.

Original languageEnglish
Title of host publicationProceedings of the 10th Chinese Society of Aeronautics and Astronautics Youth Forum
PublisherSpringer Science and Business Media Deutschland GmbH
Pages214-223
Number of pages10
ISBN (Print)9789811976513
DOIs
StatePublished - 2023
Event10th Chinese Society of Aeronautics and Astronautics Youth Forum, 2022 - Nanchang, China
Duration: 9 Oct 202210 Oct 2022

Publication series

NameLecture Notes in Electrical Engineering
Volume972 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference10th Chinese Society of Aeronautics and Astronautics Youth Forum, 2022
Country/TerritoryChina
CityNanchang
Period9/10/2210/10/22

Keywords

  • Flutter
  • Geometrical nonlinearity
  • Reduced order model
  • Substructure

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