Investigation of Propeller-power-plant Autoprecession Boundaries for a Dynamic-aeroelastic Model of a Four-engine Turboprop Transport Airplane

Investigation of Propeller-power-plant Autoprecession Boundaries for a Dynamic-aeroelastic Model of a Four-engine Turboprop Transport Airplane PDF Author: Frank T. Abbott
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 838

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NASA Technical Note

NASA Technical Note PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 554

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NASA Technical Report

NASA Technical Report PDF Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 734

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Whirl Flutter of Turboprop Aircraft Structures

Whirl Flutter of Turboprop Aircraft Structures PDF Author: Jiří Čečrdle
Publisher: Elsevier
ISBN: 0323955568
Category : Technology & Engineering
Languages : en
Pages : 378

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Whirl Flutter of Turboprop Aircraft Structures, Second Edition explores the whirl flutter phenomenon, including theoretical, practical, analytical and experimental aspects of the matter. Sections provide a general overview regarding aeroelasticity, discussions on the physical principle and the occurrence of whirl flutter in aerospace practice, and experimental research conducted, especially from the 60s. Other chapters delve into analytical methods such as basic and advanced linear models, non-linear and CFD based methods, certification issues including regulation requirements, a description of possible certification approaches, and several examples of aircraft certification from aerospace. Finally, a database of relevant books, reports and papers is provided. This updated and expanded second edition covers new chapters including both analytical and experimental aspects of the subject matter. - Provides complex information on turboprop aircraft whirl flutter phenomenon - Presents both theoretical and practical (certification related) issues - Includes 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

Monthly Catalog of United States Government Publications

Monthly Catalog of United States Government Publications PDF Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1304

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Experimental and Analytical Investigation of Propeller Whirl Flutter of a Power Plant on a Flexible Wing

Experimental and Analytical Investigation of Propeller Whirl Flutter of a Power Plant on a Flexible Wing PDF Author: Robert Merrill Bennett
Publisher:
ISBN:
Category : Flutter (Aerodynamics)
Languages : en
Pages : 80

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Proceedings of Symposium on Aeroelastic & Dynamic Modeling Technology, 23-24-25 September 1963, Dayton, Ohio

Proceedings of Symposium on Aeroelastic & Dynamic Modeling Technology, 23-24-25 September 1963, Dayton, Ohio PDF Author:
Publisher:
ISBN:
Category : Aeroelasticity
Languages : en
Pages : 800

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Review of Propeller-rotor Whirl Flutter

Review of Propeller-rotor Whirl Flutter PDF Author: Wilmer H. Reed (III.)
Publisher:
ISBN:
Category : Flutter (Aerodynamics)
Languages : en
Pages : 36

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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.

Use of Models and Scaling in Shock and Vibration

Use of Models and Scaling in Shock and Vibration PDF Author: American Society of Mechanical Engineers
Publisher:
ISBN:
Category : Engineering models
Languages : en
Pages : 92

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Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1342

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