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The Ford Flex Fan
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Sector:
Event:
Mid-Year Meeting
Language:
English
Abstract
An engine cooling fan having flexible steel blades whose pitch varies with engine speed has been developed to replace the viscous clutch used in many vehicles today. By controlling the geometric shape of the fan, maximum air flow is provided at low speeds, and noise and horsepower are reduced at high speeds. Extensive stress analysis and material development were necessary to insure adequate service life. The final design was proved out with over one million miles of in-vehicle fleet testing before release.
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Authors
Citation
Cassidy, R. and White, T., "The Ford Flex Fan," SAE Technical Paper 650472, 1965, https://doi.org/10.4271/650472.Also In
References
- “Standard Code for Testing Centrifugal and Axial Fans.” Natl. Assoc. of Fan Manufacturers Detroit, Mich. 1938 third printing, 1941
- McConnell, W. A. “Climate Testing Indoors -- Ford’s Hurricane Road.” Paper 225 presented at SAE Annual Meeting, Detroit January 1959
- Koffman J. L. Tutt, F. J. H. “Fan Noise, Its Effect on Engine Design and Performance.” Gas and Oil Power June 1955
- Nedley, A. L. “Combining Experimental and Computer Technique for Reducing Fan and Blower Tonal Noises.” Paper 825D presented at SAE Automobile Week, Detroit April 1964