ROW OF FLOW DIRECTING ELEMENTS - UNITED TECHNOLOGIES CORP

Title:

ROW OF FLOW DIRECTING ELEMENTS

Document Type and Number:

Japanese Patent JP2002188404

Kind Code:

A

Abstract:

To provide an improved row of flow directing elements (10, 12) used in turbomachinery devices.

The row of flow directing elements for which flutter stability has been improved includes at least one high-frequency flow directing element (10) and at least one low frequency flow directing element (12). In a preferred embodiment, the row includes a plurality of alternately installed high-frequency and low-frequency flow directing elements (10, 12). The three lowest frequency vibration modes for the respective high-frequency flow directing elements (10) are higher in frequency at least by 2.0% than the three lowest frequency vibration modes for the respective low frequency flow directing elements (12). The row of this invention is of value especially as a part of a rotor stage in a turbo machinery device.

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Inventors:

MONTGOMERY MATTHEW
SAMIT MARC
OROSA JOHN

Application Number:

JP2001356867A

Publication Date:

July 05, 2002

Filing Date:

November 22, 2001

Export Citation:

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Assignee:

UNITED TECHNOLOGIES CORP

International Classes:

F01D5/10; F01D5/16; F01D5/26; F01D25/06; F04D29/54; F04D29/66; (IPC1-7): F01D5/16; F01D5/26

Attorney, Agent or Firm:

Fujiya Shiga (2 outside)

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