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Saturday, May 2, 2020 | History

2 edition of Aeroelastic analysis of aircraft found in the catalog.

Aeroelastic analysis of aircraft

Aeroelastic analysis of aircraft

wing and wing/fuselage configurations

by

  • 110 Want to read
  • 18 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Aerodynamics.,
  • Aeroelasticity.,
  • Wings.,
  • Aerodynamic configurations.,
  • Turbulence models.,
  • Mach number.,
  • Navier-Stokes equation.,
  • Computational fluid dynamics.,
  • Finite element method.

  • Edition Notes

    Other titlesWing and wing/fuselage configurations.
    Statementby H.H. Chen ... [et al.].
    Series[NASA contractor report] -- NASA/CR-97-113008., NASA contractor report -- NASA CR-113008.
    ContributionsChen, H. H., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15548317M


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Aeroelastic analysis of aircraft Download PDF EPUB FB2

AIRCRAFT AEROELASTIC DESIGN AND ANALYSIS An introduction to fundamental concepts of static and dynamic aeroelasticity - with simple idealized models and mathematics to describe the essential features of aeroelastic problems.

These notes are intended for the use of Purdue University students enrolled in AAE aircraft structures, making more and more use of lightweight composite structures, may be very flexible making the aeroelastic study an important aspect of the aircraft design. Flutter is a dynamic aeroelastic instability characterized by sustained oscillation of structure arising from interaction between those three forces acting on the Size: 2MB.

aeroelastic calculations, state the governing equations and its acceptable approximations, and to apply some of these methods to perform Aeroelastic analysis of aircraft book studies of aircraft wings. For these studies, an available tool for computational structural mechanics (CSM) analysis is employed, while the computational uid dynamics (CFD) for aerodynamics and theFile Size: 3MB.

An aeroelastic stability analysis is presented for high-aspect ratio composite wings. The structural model is based on an asymptotically correct cross- sectional formulation and a nonlinear.

In general, a new aircraft design concept or a part or system may cause new aeroelastic problems. A typical example is the whirl flutter phenomenon that is the subject of this book.

In the late s, a new aircraft category (turboprop airliners) emerged. 5/22/ Page 2 Agenda 1. SDA Overview 2. Setting up an aeroelastic model for a full aircraft 3. Static aeroelastic trim analysis example 4.

Full vehicle flutter example. Therefore, aeroelastic scaling and modifications were limited. A multibody analysis based on available technical information was reported by Krueger.

Experimental activities that employed a model of a tilt-rotor aircraft component or a complete tilt-rotor aircraft model were performed on Author: Jiří Čečrdle. analysis are employed (CSM), while the aerody-namic (CFD) and coupling tools are to be created and merged in a computational program.

The nal result is an aeroelastic design framework for sub-sonic aircraft wings. ound For the aeroelastic design framework, three domains of theory are treated: structural, uid ow and uid-structure coupling.

() on the static aeroelastic analysis of a generic wing configuration. Results of the study of the asymmetric oblique-wing model, developed by Rockwell International in conjunction with the NASA Oblique Wing Research Aircraft Program, are reported.

The purpose of the work is to prepare the aerodynamic Aeroelastic analysis of aircraft book that will be required to perform.

Aeroelastic and Flight Dynamics Analysis of Folding Wing Systems by Ivan Wang Department of Mechanical Engineering and Materials Science Duke University Date: Approved: Earl H. Dowell, Supervisor Donald B.

Bliss Kenneth C. Hall Thomas P. Witelski An abstract of a dissertation submitted in partial ful llment of the requirements for. The book centers on the analysis of flutter phenomena, potential instability and the associated aeroelastic modes.

This analysis is based on a detailed study of Possio integral equation which is the center piece for the theory. Rigorous mathematical analysis and physical-engineering relevance of the topic are the main traits of this book.

The Cited by: Aircraft performance is influenced significantly both by aeroelastic phenomena, arising from the interaction of elastic, inertial and aerodynamic forces, and by load variations resulting from flight and ground manoeuvres and - Selection from Introduction to Aircraft Aeroelasticity and Loads [Book].

The application of morphing wing devices can bring several benefits in terms of aircraft performance, as the current literature shows.

Within the scope of Clean Sky 2 AirGreen 2 European project, the authors provided a safety-driven design of an adaptive winglet, through the examination of potential hazards resulting from operational faults, such as actuation chain jamming or links structural Author: Maria Chiara Noviello, Ignazio Dimino, Antonio Concilio, Francesco Amoroso, Rosario Pecora.

A theoretical analysis of two experimental launch vehicles which are known to have failed because of aeroelastic divergence is presented. Data for the analysis and the cal­ culated aeroelastic divergence characteristics are provided.

The analytical results and the flight results of the two divergent vehicles are compared. The correlation of theFile Size: 1MB. 21 Aircraft Design and Certification The aim of this final part of the book is briefly to outline some of the processes employed in the commercial aerospace industry for aeroelastics - Selection from Introduction to Aircraft Aeroelasticity and Loads [Book].

that will lead to new aircraft or improvements in existing aircraft. The structures group has primary responsibility for loads prediction, component strength analysis. Introduction to Aircraft Aeroelasticity and Loads, Second Edition is an updated new edition offering comprehensive coverage of the main principles of aircraft aeroelasticity and loads.

For ease of reference, the book is divided into three parts and begins by reviewing the underlying disciplines of vibrations, aerodynamics, loads and control, and then goes on to describe simplified models to. For a rotor on a wind-tunnel support, a normal mode representation of the test module, strut, and balance is used.

The aeroelastic analysis for rotorcraft in flight is applicable to a general two-rotor aircraft, including single main-rotor and tandem helicopter configurations, and side-by-side or tilting proprotor aircraft configurations. Chapter1: FundamentalsofAeroelasticAnalysis • IntroductiontoAeroelasticAnalysisandDesign • AerodynamicDataInputandGeneration • AerodynamicTheories.

the aeroelastic behavior of the tethered aircraft, as described in [30]. The flight and structural instabilities are identified by means of an eigenmode analysis in the frequency domain.

For ease of reference, the book is divided into three partsand begins by reviewing the underlying disciplines of vibrations, aerodynamics, loads and control, and then goes on to describesimplified models to illustrate aeroelastic behaviour and aircraftresponse and loads for the flexible aircraft before introducingsome more advanced methodologies.

–Aircraft certification –Aircraft dynamic and static aeroelastic response analysis including flutter –Aircraft performance and handling qualities –Aerodynamic design and analysis –Flight and wind tunnel test planning, execution, data reduction, and documentation Introduction 4.

An aeroelastic analysis will provide the different mode shapes and corresponding frequencies as well as the corresponding damping values.

A load analysis will provide the loads on the turbine for a specific load case; and here, too, all aeroelastic effects should be included. Some guidelines as to the minimum requirements for the performance of.

T1 - LPV analysis of a gain scheduled control for an aeroelastic aircraft. AU - Hjartarson, Arnar. AU - Seiler, Peter. AU - Balas, Gary J. PY - /1/1. Y1 - /1/1. N2 - This paper considers the performance of a gain scheduled flight control law for an aeroelastic by: 4. Nonlinear aeroelastic responses of a flying wing aircraft due to different gust profiles are investigated.

Three different gust profiles are obtained considering light, moderate, and severe turbulence. A flying wing configuration is designed for the purpose of this investigation.

The structural properties of the wings are obtained using VABS software, and then the flying wing is simulated with Cited by: 1. NONLINEAR AEROELASTIC ANALYSIS OF FIGHTER-LIKE AIRCRAFT WITH EXTERNAL STORES.

Anders Karlsson, Saab Aeronautics. This document and the information contained herein is the property of Saab AB and must not be used, disclosed or altered without Saab AB prior written consent. In this section, we demonstrate the flutter analysis of a linear aeroelastic system.

To do this, a simple model is needed. In the older literature on aeroelasticity, flutter analyses often were performed using simple, spring-restrained, rigid-wing models such as the one shown in Fig. AbstractA numerical static aeroelastic analysis procedure, applying a modal approach in coupling the fluid dynamic and structural solutions, is presented.

The method is based on a preliminary struc. known as “The Flutter Bible.” Their treatment for the analysis and prevention of the flutter problem laid the groundwork for the techniques in use today.

Another major aircraft design concern that may be classified as a static aeroelastic phenomenon was experienced in by the Bristol Bagshot, a twin-engine, high-aspect-ratio English.

Introduction to Aircraft Structural Analysis, Second Edition, is an essential resource for learning aircraft structural analysis. Based on the author's best-selling text Aircraft Structures for Engineering Students, this brief book covers the basics of structural analysis as applied to aircraft structures.

The most important aeroelastic phenomena for aircraft and wind turbine design are explored with an examination of how they affect structural and aerodynamic performance. Finally you have to make use of commercial and custom software to apply aeroelasticity in project analysis and design.

This book aims to embrace the range of basic aeroelastic and loads topics that might be encountered in an aircraft design office and to provide an understanding of the main principles involved. Colleagues in industry have often remarked that it is not appropriate to give some of the classical books on aeroelasticity to new graduate engineers as.

The aeroelastic behavior of high-aspect-ratio very flexible flying wing is highly affected by the geometric nonlinearities of the aircraft structure. This paper reviews the findings on how these nonlinearities influence the structural and flight dynamics, and it shows that the aeroelastic flight envelope could significantly be extended with proper choices of design parameters such as engine Author: Pezhman Mardanpour, Siavash Rastkar.

The analysis has been coupled with various aerodynamic models to investigate the nonlinear aeroelastic behavior and flight dynamics of High Altitude, Long Endurance (HALE) aircraft.6, 7 Joint constraint equations are added to the nonlinear structural formulation.

A numerical static aeroelastic analysis procedure, applying a modal approach in coupling the fluid dynamic and structural solutions, is presented. The method is based on a preliminary structural modal analysis from which a number of natural modes is selected to be used in the creation of a fluid dynamic domain morphing criterion.

Get this from a library. A general interface method for aeroelastic analysis of aircraft. [T Tzong; United States. National Aeronautics and Space Administration.;]. A method for static aeroelastic trim analysis and flight loads computation of a flexible aircraft with large deformations has been presented in this paper, which considers the geometric nonlinearity of the structure and the nonplanar effects of aerodynamics.

A nonplanar vortex lattice method is used to compute the nonplanar aerodynamics. The nonlinear finite element method is introduced to Cited by: 5. This paper addresses a methodology for aeroelastic analysis of a light sport aircraft using experimentally gained data. It is focused on the aeroelastic analyses and related ground tests.

The procedure is simple, fast, and low cost; however, it maintains a high standard regarding the quality and reliability of its by: 2. structures which are subjected to different kinds of loadings such as: aeroelastic forces, maneuver loads, and follower forces.

In this study, the aeroelastic design considerations for civil aircraft wings are investigated and the aeroelastic analysis of a commercial aircraft wing in. The flutter analysis of the reference state was performed by means of the PK method which is also applicable for the sensitivity analysis.

The analysis included 14 modes. The structural damping was included via common value of the damping ratio of 1%. The density was considered = kg.m-3 (ISA value for H = 0).

There was found the flutter. This paper presents an extension of the simulation code ASWING to aeroelastic analysis of an airborne wind turbine.

The device considered in this study consists of a tethered rigid wing with onboard-mounted wind turbines designed for wind energy harvesting in crosswind flight by: 6.Aeroelastic Analysis of Very Flexible Aircraft using Nonlinear Modal Solutions.

Student: Renato Medeiros Sponsor: CNPq. Summary: Very flexible aircraft usually experience large shape changes during the flight. Because of the unique dynamics at play, common linear modal techniques may not be applied with reasonable accuracy to predict the.A review of aeroelastic theory and the fundamentals of setting up and running aeroelasticity solutions are covered.

There is an emphasis on the practical applications of the software and enhancing the student’s engineering judgment with respect to aeroelastic analysis of aircraft.