Unsteady Lifting Surface Theory Based on Double Linearization Concept for Supersonic Through-Flow Fan

Toshiya Hanada; Masanobu Namba

doi:10.1299/kikaib.60.161

Unsteady Lifting Surface Theory Based on Double Linearization Concept for Supersonic Through-Flow Fan

Toshiya Hanada, Masanobu Namba

Space Systems Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

A full three-dimensional lifting surface theory based on the double linearization concept is developed for a rotating annular cascade model operating at axial supersonic velocity. It is assumed that each blade vibrates with infinitesimal displacement amplitude under small mean loading. Vibration modes normal and parallel to the blade chord are considered. Numerical results are presented to investigate the mean loading effects on the aerodynamic instability of the blade motion. It is found that the bending motion can be unstable due to the presence of mean loading. Some numerical results compared with strip theory predictions demonstrate significant three-dimensional effects on the unsteady aerodynamic force.

Original language	English
Pages (from-to)	161-168
Number of pages	8
Journal	Transactions of the Japan Society of Mechanical Engineers Series B
Volume	60
Issue number	569
DOIs	https://doi.org/10.1299/kikaib.60.161
Publication status	Published - 1994

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanical Engineering

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title = "Unsteady Lifting Surface Theory Based on Double Linearization Concept for Supersonic Through-Flow Fan",

abstract = "A full three-dimensional lifting surface theory based on the double linearization concept is developed for a rotating annular cascade model operating at axial supersonic velocity. It is assumed that each blade vibrates with infinitesimal displacement amplitude under small mean loading. Vibration modes normal and parallel to the blade chord are considered. Numerical results are presented to investigate the mean loading effects on the aerodynamic instability of the blade motion. It is found that the bending motion can be unstable due to the presence of mean loading. Some numerical results compared with strip theory predictions demonstrate significant three-dimensional effects on the unsteady aerodynamic force.",

author = "Toshiya Hanada and Masanobu Namba",

year = "1994",

doi = "10.1299/kikaib.60.161",

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journal = "Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B",

issn = "0387-5016",

publisher = "The Japan Society of Mechanical Engineers",

number = "569",

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AU - Hanada, Toshiya

AU - Namba, Masanobu

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Y1 - 1994

N2 - A full three-dimensional lifting surface theory based on the double linearization concept is developed for a rotating annular cascade model operating at axial supersonic velocity. It is assumed that each blade vibrates with infinitesimal displacement amplitude under small mean loading. Vibration modes normal and parallel to the blade chord are considered. Numerical results are presented to investigate the mean loading effects on the aerodynamic instability of the blade motion. It is found that the bending motion can be unstable due to the presence of mean loading. Some numerical results compared with strip theory predictions demonstrate significant three-dimensional effects on the unsteady aerodynamic force.

AB - A full three-dimensional lifting surface theory based on the double linearization concept is developed for a rotating annular cascade model operating at axial supersonic velocity. It is assumed that each blade vibrates with infinitesimal displacement amplitude under small mean loading. Vibration modes normal and parallel to the blade chord are considered. Numerical results are presented to investigate the mean loading effects on the aerodynamic instability of the blade motion. It is found that the bending motion can be unstable due to the presence of mean loading. Some numerical results compared with strip theory predictions demonstrate significant three-dimensional effects on the unsteady aerodynamic force.

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JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

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