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Evaluation of a Low-Noise Formate Spiral-Bevel Gear Set

[+] Author Affiliations
David G. Lewicki

U.S. Army Research Laboratory, Cleveland, OH

Ron L. Woods

Bell Helicopter Textron Inc., Fort Worth, TX

Faydor L. Litvin

University of Illinois at Chicago, Chicago, IL

Alfonso Fuentes

Polytechnic University of Cartagena, Cartagena, Murcia, Spain

Paper No. DETC2007-34656, pp. 305-325; 21 pages
doi:10.1115/DETC2007-34656
From:
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 7: 10th International Power Transmission and Gearing Conference
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4808-6 | eISBN: 0-7918-3806-4

abstract

Studies to evaluate low-noise Formate spiral-bevel gears were performed. Experimental tests were performed on the OH-58D helicopter main-rotor transmission in the NASA Glenn 500-hp Helicopter Transmission Test Stand. Low-noise Formate spiral-bevel gears were compared to the baseline OH-58D spiral-bevel gear design, a high-strength design, and previously tested low-noise designs (including an original low-noise design and an improved-bearing-contact low-noise design). Noise, vibration, and tooth strain tests were performed. The Formate design showed a decrease in noise and vibration compared to the baseline OH-58D design, and was similar to that of the previously tested improved-bearing contact low-noise design. The pinion tooth stresses for the Formate design significantly decreased in comparison to the baseline OH-58D design. Also similar to that of the improved bearing-contact low-noise design, the maximum stresses of the Formate design shifted toward the heel, compared to the center of the face width for the baseline, high-strength, and previously tested low-noise designs.

Topics: Noise (Sound) , Gears

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