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The Effects of Inlet Box Aerodynamics on the Mechanical Performance of a Variable Pitch in Motion Fan
Author
Source
Advances in Acoustics and Vibration
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-25
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
This paper describes research involving an in-service failure of a “variable pitch in motion” fan’s blade bearing.
Variable pitch in motion fans rotate at a constant speed, with the changing blade angle varying the load.
A pitch-change mechanism facilitates the change in blade angle.
A blade bearing supports each blade enabling it to rotate.
The author observed that as the fan aerodynamic stage loading progressively increased, so did the rate of blade-bearing wear.
The reported research addressed two separate, but linked, needs.
First, the ongoing need to increase fan pressure development capability required an increase in fan loading.
This increase was within the context of an erosive operating regime which systematically reduced fan pressure development capability.
The second need was to identify the root cause of blade-bearing failures.
The author addressed the linked needs using a computational analysis, improving the rotor inflow aerodynamic characteristics through an analysis of the inlet box and design of inlet guide vanes to control flow nonuniformities at the fan inlet.
The results of the improvement facilitated both an increase in fan-pressure-developing capability and identification of the root cause of the blade-bearing failures.
American Psychological Association (APA)
Sheard, Anthony G.. 2012. The Effects of Inlet Box Aerodynamics on the Mechanical Performance of a Variable Pitch in Motion Fan. Advances in Acoustics and Vibration،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-459704
Modern Language Association (MLA)
Sheard, Anthony G.. The Effects of Inlet Box Aerodynamics on the Mechanical Performance of a Variable Pitch in Motion Fan. Advances in Acoustics and Vibration No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-459704
American Medical Association (AMA)
Sheard, Anthony G.. The Effects of Inlet Box Aerodynamics on the Mechanical Performance of a Variable Pitch in Motion Fan. Advances in Acoustics and Vibration. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-459704
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-459704