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Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 24 |
Release | : 2018-06-28 |
Genre | : |
ISBN | : 9781722027810 |
Download A Review of Transmission Diagnostics Research at NASA Lewis Research Center Book in PDF, ePub and Kindle
This paper presents a summary of the transmission diagnostics research work conducted at NASA Lewis Research Center over the last four years. In 1990, the Transmission Health and Usage Monitoring Research Team at NASA Lewis conducted a survey to determine the critical needs of the diagnostics community. Survey results indicated that experimental verification of gear and bearing fault detection methods, improved fault detection in planetary systems, and damage magnitude assessment and prognostics research were all critical to a highly reliable health and usage monitoring system. In response to this, a variety of transmission fault detection methods were applied to experimentally obtained fatigue data. Failure modes of the fatigue data include a variety of gear pitting failures, tooth wear, tooth fracture, and bearing spalling failures. Overall results indicate that, of the gear fault detection techniques, no one method can successfully detect all possible failure modes. The more successful methods need to be integrated into a single more reliable detection technique. A recently developed method, NA4, in addition to being one of the more successful gear fault detection methods, was also found to exhibit damage magnitude estimation capabilities. Zakajsek, James J. Glenn Research Center RTOP 505-62-36...
Author | : James J. Zakrajsek |
Publisher | : |
Total Pages | : 0 |
Release | : 1994 |
Genre | : Gearing |
ISBN | : |
Download A Review of Transmission Diagnostics Research at NASA Lewis Research Center Book in PDF, ePub and Kindle
Author | : James J. Zakrajsek |
Publisher | : |
Total Pages | : 22 |
Release | : 1994 |
Genre | : Gearing |
ISBN | : |
Download A Review of Transmission Diagnostics Research at NASA Lewis Research Center Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 24 |
Release | : 1997 |
Genre | : |
ISBN | : |
Download Gear and Transmission Research at NASA Lewis Research Center Book in PDF, ePub and Kindle
This paper is a review of some of the research work of the NASA Lewis Research Center Mechanical Components Branch. It includes a brief review of the NASA Lewis Research Center and the Mechanical Components Branch. The research topics discussed are crack propagation of gear teeth, gear noise of spiral bevel and other gears, design optimization methods, methods we have investigated for transmission diagnostics, the analytical and experimental study of gear thermal conditions, the analytical and experimental study of split torque systems, the evaluation of several new advanced gear steels and transmission lubricants and the evaluation of various aircraft transmissions. The area of research needs for gearing and transmissions is also discussed.
Author | : |
Publisher | : |
Total Pages | : 16 |
Release | : 1995 |
Genre | : |
ISBN | : |
Download Transmission Diagnostic Research at NASA Lewis Research Center Book in PDF, ePub and Kindle
Author | : Dennis P. Townsend |
Publisher | : |
Total Pages | : 18 |
Release | : 1997 |
Genre | : Gearing |
ISBN | : |
Download Gear and Transmission Research at NASA Lewis Research Center Book in PDF, ePub and Kindle
This paper is a review of some of the research work of the NASA Lewis Research Center Mechanical Components Branch. It includes a brief review of the NASA Lewis Research Center and the Mechanical Components Branch. The research topics discussed are crack propagation of gear teeth, gear noise of spiral bevel and other gears, design optimization methods, methods we have investigated for transmission diagnostics, the analytical and experimental study of gear thermal conditions, the analytical and experimental study of split torque systems, the evaluation of several new advanced gear steels and transmission lubricants and the evaluation of various aircraft transmissions. The area of research needs for gearing and transmissions is also discussed.
Author | : D. G. Lewicki |
Publisher | : |
Total Pages | : 31 |
Release | : 1990 |
Genre | : |
ISBN | : |
Download Transmission Research Activities at NASA Lewis Research Center Book in PDF, ePub and Kindle
The NASA Lewis Research Center and The U.S. Army Aviation Systems Command (AVSCOM) are involved in a joint research program to advance the technology of rotorcraft transmissions. The program consists of analytical and experimental efforts to achieve the overall goals of reducing transmission weight and noise, while increasing life and reliability. The work includes in-house studies and tests, university grants, industry contracts, and joint programs with other military organizations. This paper highlights recent activities in the areas of transmission and related component research. Current areas include specific technologies in support of military rotary wing aviation, gearing technology, transmission noise reduction studies, a recent interest in gearbox diagnostics, and advanced transmission system studies. Results of recent activities are presented along with near term research plans. Keywords: Transmissions, Gears, Noise, Diagnostics. (jhd).
Author | : |
Publisher | : |
Total Pages | : 702 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 856 |
Release | : 1995-10 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalogue, United States Public Documents Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 854 |
Release | : 1995 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalog of United States Government Publications Book in PDF, ePub and Kindle