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A comparison of a special purpose processor with a general purpose processor and a numerical approach in generating helicopter dynamics equations

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Title: A comparison of a special purpose processor with a general purpose processor and a numerical approach in generating helicopter dynamics equations
Contributors: Ravichandran, S., Florida Atlantic University (Degree grantor), Gaonkar, Gopal H. (Thesis advisor), College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Publisher Information: Florida Atlantic University
Collection: FAU Digital Collections (Florida Atlantic University Digital Library)
Subject Terms: Algebra--Computer programs, Helicopters--Dynamics
Description: Presently three schemes are used to generate the governing equations of motion. These schemes are: (1) general purpose processors such as REDUCE, MACSYMA and MAPLE, (2) a special purpose symbolic processor DEHIM--Dynamic Equations for Helicopter Interpretive Models and (3) completely numerical approaches such as AGEM--Automatic Generation of Equations of Motion. With REDUCE as a representative multipurpose processor in scheme 1, comparative aspects of these three schemes have been studied by applying them to the same set of problems. These problems range from a linear model of a single blade with one degree of freedom to a mildly nonlinear three-bladed rotor model with several degrees of freedom. The derivation process includes the nonlinear equations and the perturbed linear equations about a user-supplied equilibrium state in a rotating frame and then the multiblade equations, which represent transformation into a nonrotating frame using multiblade coordinates. (Abstract shortened with permission of author.) ; College of Engineering and Computer Science ; FAU Electronic Theses and Dissertations Collection ; Thesis (M.S.E.)--Florida Atlantic University, 1989.
Document Type: Thesis
File Description: 239 p.; application/pdf; Electronic Thesis or Dissertation
Language: English
Relation: http://purl.flvc.org/fcla/dt/14517; 14517; FADT14517; fau:11315; https://fau.digital.flvc.org/islandora/object/fau%3A11315/datastream/TN/view/comparison%20of%20a%20special%20purpose%20processor%20with%20a%20general%20purpose%20processor%20and%20a%20numerical%20approach%20in%20generating%20helicopter%20dynamics%20equations.jpg
Availability: http://purl.flvc.org/fcla/dt/14517
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Rights: Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder. ; http://rightsstatements.org/vocab/InC/1.0/
Accession Number: edsbas.C5427FF5
Database: BASE
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  – Url: http://purl.flvc.org/fcla/dt/14517#
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  Label: Title
  Group: Ti
  Data: A comparison of a special purpose processor with a general purpose processor and a numerical approach in generating helicopter dynamics equations
– Name: Author
  Label: Contributors
  Group: Au
  Data: Ravichandran, S.<br />Florida Atlantic University (Degree grantor)<br />Gaonkar, Gopal H. (Thesis advisor)<br />College of Engineering and Computer Science<br />Department of Ocean and Mechanical Engineering
– Name: Publisher
  Label: Publisher Information
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  Data: Florida Atlantic University
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  Data: FAU Digital Collections (Florida Atlantic University Digital Library)
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  Data: <searchLink fieldCode="DE" term="%22Algebra--Computer+programs%22">Algebra--Computer programs</searchLink><br /><searchLink fieldCode="DE" term="%22Helicopters--Dynamics%22">Helicopters--Dynamics</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: Presently three schemes are used to generate the governing equations of motion. These schemes are: (1) general purpose processors such as REDUCE, MACSYMA and MAPLE, (2) a special purpose symbolic processor DEHIM--Dynamic Equations for Helicopter Interpretive Models and (3) completely numerical approaches such as AGEM--Automatic Generation of Equations of Motion. With REDUCE as a representative multipurpose processor in scheme 1, comparative aspects of these three schemes have been studied by applying them to the same set of problems. These problems range from a linear model of a single blade with one degree of freedom to a mildly nonlinear three-bladed rotor model with several degrees of freedom. The derivation process includes the nonlinear equations and the perturbed linear equations about a user-supplied equilibrium state in a rotating frame and then the multiblade equations, which represent transformation into a nonrotating frame using multiblade coordinates. (Abstract shortened with permission of author.) ; College of Engineering and Computer Science ; FAU Electronic Theses and Dissertations Collection ; Thesis (M.S.E.)--Florida Atlantic University, 1989.
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  Data: 239 p.; application/pdf; Electronic Thesis or Dissertation
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  Data: http://purl.flvc.org/fcla/dt/14517; 14517; FADT14517; fau:11315; https://fau.digital.flvc.org/islandora/object/fau%3A11315/datastream/TN/view/comparison%20of%20a%20special%20purpose%20processor%20with%20a%20general%20purpose%20processor%20and%20a%20numerical%20approach%20in%20generating%20helicopter%20dynamics%20equations.jpg
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  Group: Cpyrght
  Data: Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder. ; http://rightsstatements.org/vocab/InC/1.0/
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      – Text: English
    Subjects:
      – SubjectFull: Algebra--Computer programs
        Type: general
      – SubjectFull: Helicopters--Dynamics
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      – TitleFull: A comparison of a special purpose processor with a general purpose processor and a numerical approach in generating helicopter dynamics equations
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            NameFull: Florida Atlantic University (Degree grantor)
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            NameFull: Gaonkar, Gopal H. (Thesis advisor)
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            NameFull: College of Engineering and Computer Science
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