Whirl Flutter of Turboprop Aircraft Structures Book

Whirl Flutter of Turboprop Aircraft Structures


  • Author : Jiri Cecrdle
  • Publisher : Woodhead Publishing
  • Release Date : 2015-01-27
  • Genre: Business & Economics
  • Pages : 354
  • ISBN 10 : 9781782421863

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Whirl Flutter of Turboprop Aircraft Structures Excerpt :

Whirl flutter is the aeroelastic phenomenon caused by the coupling of aircraft propeller aerodynamic forces and the gyroscopic forces of the rotating masses (propeller, gas turbine engine rotor). It may occur on the turboprop, tilt-prop-rotor or rotorcraft aircraft structures. Whirl Flutter of Turboprop Aircraft Structures explores the whirl flutter phenomenon, including theoretical and practical as well as analytical and experimental aspects of the matter. The first introductory part gives a general overview regarding aeroelasticity, followed by the physical principle and the occurrence of whirl flutter in aerospace practice. The next section deals with experiment research including earlier activities performed, particularly from the sixties, as well as recent developments. Subsequent chapters discuss analytical methods such as basic and advanced linear models, and non-linear and CFD based methods. Remaining chapters summarize certification issues including regulation requirements, a description of possible certification approaches and several examples of aircraft certification from the aerospace practice. Finally, a database of relevant books and reports is provided. provides complex information of turboprop aircraft whirl flutter phenomenon presents both theoretical and practical (certification related) issues presents experimental research as well as analytical models (basic and advanced) of matter includes both early-performed works and recent developments contains a listing of relevant books and reports

Aeroelastic Stability of Turboprop Aircraft  Whirl Flutter Book

Aeroelastic Stability of Turboprop Aircraft Whirl Flutter


  • Author : Jiří Čečrdle
  • Publisher : Unknown
  • Release Date : 2018
  • Genre: Technology
  • Pages : null
  • ISBN 10 : OCLC:1154226927

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Aeroelastic Stability of Turboprop Aircraft Whirl Flutter Excerpt :

This chapter is focused on a specific type of dynamic aeroelastic stability phenomenon-whirl flutter. Whirl flutter is caused by the effect of rotating parts of a turboprop power plant (propeller and, gas turbine engine rotor). The chapter presents fundamental facts regarding the whirl flutter phenomenon, including a historical overview and information regarding the occurrence of whirl flutter in aerospace practice. After that, the physical principles of whirl flutter are explained using a simple mechanical system with two degrees of freedom. Next, an analytical solution to determine the aerodynamic forces caused by the gyroscopic motion on each of the propeller blades is provided and the influences of the main structural parameters on the whirl flutter stability are discussed. The second, practical part is focused on the experimental research of the whirl flutter phenomenon and on the certification-related issues. The methodology of certification according to the FAR/CS 23 regulation standard is demonstrated on the example of a twin wing mounted tractor engine commuter aircraft.

Flight Physics Book

Flight Physics


  • Author : Konstantin Volkov
  • Publisher : BoD – Books on Demand
  • Release Date : 2018-02-14
  • Genre: Technology & Engineering
  • Pages : 240
  • ISBN 10 : 9789535138075

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Flight Physics Excerpt :

The book focuses on the synthesis of the fundamental disciplines and practical applications involved in the investigation, description, and analysis of aircraft flight including applied aerodynamics, aircraft propulsion, flight performance, stability, and control. The book covers the aerodynamic models that describe the forces and moments on maneuvering aircraft and provides an overview of the concepts and methods used in flight dynamics. Computational methods are widely used by the practicing aerodynamicist, and the book covers computational fluid dynamics techniques used to improve understanding of the physical models that underlie computational methods.

Issues in Transportation Research and Application  2013 Edition Book

Issues in Transportation Research and Application 2013 Edition


  • Author : Anonim
  • Publisher : ScholarlyEditions
  • Release Date : 2013-05-01
  • Genre: Technology & Engineering
  • Pages : 695
  • ISBN 10 : 9781490110905

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Issues in Transportation Research and Application 2013 Edition Excerpt :

Issues in Transportation Research and Application: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Transport Geography. The editors have built Issues in Transportation Research and Application: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Transport Geography in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Transportation Research and Application: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Review of Propeller rotor Whirl Flutter Book

Review of Propeller rotor Whirl Flutter


  • Author : Wilmer H. Reed (III.)
  • Publisher : Unknown
  • Release Date : 1967
  • Genre: Flutter (Aerodynamics)
  • Pages : 27
  • ISBN 10 : UIUC:30112106631507

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Review of Propeller rotor Whirl Flutter Excerpt :

A summary is made of the state of the art of propeller-whirl flutter -- a precession-type instability that can occur on a flexibly mounted aircraft engine-propeller combination. This report reviews the literature relating to this problem from the time it first became of concern on conventional turboprop and V/STOL aircraft. Included in the survey are a description of the basic mechanism of whirl flutter, a summary of generalized trend studies on idealized systems, the status of methods for predicting propeller aerodynamic coefficients, the effects of flapping hinged blades and twisted flexible blades on whirl flutter, and some approaches for including propeller whirl modes as a part of the flutter evaluation for complete aircraft. Also, brief consideration is given to the response of flexibly mounted propeller-nacelle systems to random atmospheric turbulence. Whirl flutter of conventional propeller-nacelle systems is now a reasonably well understood phenomenon and amenable to analysis. For propeller-rotor systems with flapping blades, however, comparisons between experiment and theory suggest the need for further refinements in the mathematical model.

NASA Technical Report Book

NASA Technical Report


  • Author : United States. National Aeronautics and Space Administration
  • Publisher : Unknown
  • Release Date : 1967
  • Genre: Aerodynamics
  • Pages : null
  • ISBN 10 : UOM:39015011148502

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NASA Technical Report Excerpt :

Manual on Aeroelasticity Book

Manual on Aeroelasticity


  • Author : North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development. Structures and Materials Panel
  • Publisher : Unknown
  • Release Date : 1962
  • Genre: Aeroelasticity
  • Pages : null
  • ISBN 10 : CORNELL:31924004044479

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Manual on Aeroelasticity Excerpt :

Engine Structures Book

Engine Structures


  • Author : Anonim
  • Publisher : Unknown
  • Release Date : 1988
  • Genre: Engines
  • Pages : 226
  • ISBN 10 : STANFORD:36105024739075

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Engine Structures Excerpt :

VTOL STOL Aircraft Book

VTOL STOL Aircraft


  • Author : Hannes Spintzyk
  • Publisher : Unknown
  • Release Date : 1961
  • Genre: Airplanes
  • Pages : 354
  • ISBN 10 : UOM:39015023958930

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VTOL STOL Aircraft Excerpt :

AIAA Bulletin Book

AIAA Bulletin


  • Author : Anonim
  • Publisher : Unknown
  • Release Date : 1968
  • Genre: Aeronautics
  • Pages : null
  • ISBN 10 : UOM:39015024299185

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Aeronautical Engineering Book

Aeronautical Engineering


  • Author : Anonim
  • Publisher : Unknown
  • Release Date : 1971
  • Genre: Aeronautics
  • Pages : null
  • ISBN 10 : STANFORD:36105024715067

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Aeronautical Engineering Excerpt :

A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)

Flight Testing of Fixed Wing Aircraft Book

Flight Testing of Fixed Wing Aircraft


  • Author : Ralph D. Kimberlin
  • Publisher : AIAA
  • Release Date : 2003
  • Genre: Airplanes
  • Pages : 435
  • ISBN 10 : 1600860567

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Flight Testing of Fixed Wing Aircraft Excerpt :

Annotation The measurement of performance during an airplane's flight, testing is one of the more important tasks to be accomplished during its development as it impacts on both the airplane's safety and its marketability. This book discusses performance for both propeller-driven and jet aircraft.