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Experimental Comparison Of Face Milled And Face Hobbed Spiral Bevel Gears Nasa Tm 2001 210940 Nas 115210940
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Book Synopsis Experimental comparison of face-milled and face-hobbed spiral bevel gears, NASA/TM-2001-210940, NAS 1.15:210940 by : Robert F. Handschuh
Download or read book Experimental comparison of face-milled and face-hobbed spiral bevel gears, NASA/TM-2001-210940, NAS 1.15:210940 written by Robert F. Handschuh and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Comparison of Face-Milled and Face-Hobbed Spiral Bevel Gears by :
Download or read book Experimental Comparison of Face-Milled and Face-Hobbed Spiral Bevel Gears written by and published by . This book was released on 2001 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental comparison of face-milled and face-hobbed spiral bevel gears was accomplished. The two differently manufactured spiral bevel gear types were tested in a closed-loop facility at NASA Glenn Research Center. Strain, vibration, and noise testing were completed at various levels of rotational speed and load. Tests were conducted from static (slow-roll) to 12600 rpm and up to 269 N.m (2380 in.lb) pinion speed and load conditions. The tests indicated that the maximum stress recorded at the root locations had nearly the same values, however the stress distribution was different from the toe to the heel. Also. the alternating stress measured was higher for the face-milled pinion than that attained for the face-bobbed pinion (larger minimum stress). The noise and vibration results indicated that the levels measured for the face-bobbed components were less than those attained for the face-milled gears tested.
Book Synopsis Experimental Comparison of Face-milled and Face-hobbed Spiral Bevel Gears ... Nasa by : United States. National Aeronautics and Space Administration
Download or read book Experimental Comparison of Face-milled and Face-hobbed Spiral Bevel Gears ... Nasa written by United States. National Aeronautics and Space Administration and published by . This book was released on 2003* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis TESTING OF FACE-MILLED SPIRAL BEVEL GEARS AT HIGH-SPEED AND LOAD... NASA/TM-2001-210743... JUN. 20, 2001 by :
Download or read book TESTING OF FACE-MILLED SPIRAL BEVEL GEARS AT HIGH-SPEED AND LOAD... NASA/TM-2001-210743... JUN. 20, 2001 written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Testing of Face-Milled Spiral Bevel Gears at High-Speed and Load by :
Download or read book Testing of Face-Milled Spiral Bevel Gears at High-Speed and Load written by and published by . This book was released on 2001 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spiral bevel gears are an important drive system components of rotorcraft (helicopters) currently in use. In this application the spiral bevel gears are required to transmit very high torque at high rotational speed. Available experimental data on the operational characteristics for thermal and structural behavior is relatively small in comparison to that found for parallel axis gears. An ongoing test program has been in place at NASA Glenn Research Center over the last ten years to investigate their operational behavior at operating conditions found in aerospace applications. This paper will summarize the results of the tests conducted on face-milled spiral bevel gears. The data from the pinion member (temperature and stress) were taken at conditions from slow-roll to 14400 rpm and up to 537 kW (720 hp). The results have shown that operating temperature is affected by the location of the lubricating jet with respect to the point it is injected and the operating conditions that are imposed. Also the stress measured from slow-roll to very high rotational speed, at various torque levels, indicated little dynamic affect over the rotational speeds tested.
Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781723998676 Total Pages :34 pages Book Rating :4.9/5 (986 download)
Book Synopsis Comparison of Experimental and Analytical Tooth Bending Stress of Aerospace Spiral Bevel Gears by : National Aeronautics and Space Adm Nasa
Download or read book Comparison of Experimental and Analytical Tooth Bending Stress of Aerospace Spiral Bevel Gears written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-25 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study to investigate the bending stress in aerospace-quality spiral bevel gears was performed. Tests were conducted in the NASA Lewis Spiral Bevel Gear Test Facility. Multiple teeth on the spiral bevel pinion were instrumented with strain gages and tests were conducted from static (slow roll) to 14400 RPM at power levels to 540kW (720 hp). Effects of changing speed and load on the bending stress were measured. Experimental results are compared to those found by three-dimensional finite element analysis. Handschuh, Robert F. and Bibel, George D. Glenn Research Center NASA/TM-1999-208903, NAS 1.15:208903, E-11365-1, ARL-TR-1891
Book Synopsis Comparison of Experimental and Analytical Tooth Bending Stress of Aerospace Spiral Bevel Gears by :
Download or read book Comparison of Experimental and Analytical Tooth Bending Stress of Aerospace Spiral Bevel Gears written by and published by . This book was released on 1999 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study to investigate the bending stress in aerospace-quality spiral bevel gears was performed. Tests were conducted in the NASA Lewis Spiral Bevel Gear Test Facility. Multiple teeth on the spiral bevel pinion were instrumented with strain gages and tests were conducted from static (slow roll) to 14400 RPM at power levels to 540kW (720 hp). Effects of changing speed and load on the bending stress were measured. Experimental results are compared to those found by three-dimensional finite element analysis.
Book Synopsis Computerized Design and Analysis of Face-Milled, Uniform Tooth Height Spiral Bevel Gear Drives by : Faydor L. Litvin
Download or read book Computerized Design and Analysis of Face-Milled, Uniform Tooth Height Spiral Bevel Gear Drives written by Faydor L. Litvin and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis COMPUTERIZED DESIGN AND ANALYSIS OF FACE-MILLED, UNIFORM TOOTH HEIGHT SPIRAL BEVEL GEAR DRIVES... NASA-TM-107348... MAR. 24, 1997 by :
Download or read book COMPUTERIZED DESIGN AND ANALYSIS OF FACE-MILLED, UNIFORM TOOTH HEIGHT SPIRAL BEVEL GEAR DRIVES... NASA-TM-107348... MAR. 24, 1997 written by and published by . This book was released on 1998* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722315894 Total Pages :82 pages Book Rating :4.3/5 (158 download)
Book Synopsis Computerized Design and Analysis of Face-Milled, Uniform Tooth Height, Low-Noise Spiral Bevel Gear Drives by : National Aeronautics and Space Administration (NASA)
Download or read book Computerized Design and Analysis of Face-Milled, Uniform Tooth Height, Low-Noise Spiral Bevel Gear Drives written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-08 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new method for design and generation of spiral bevel gears of uniform tooth depth with localized bearing contact and low level of transmission errors is considered. The main features of the proposed approach are as follows: (1) The localization of the bearing contact is achieved by the mismatch of the generating surfaces. The bearing contact may be provided in the longitudinal direction, or in the direction across the surface; and (2) The low level of transmission errors is achieved due to application of nonlinear relations between the motions of the gear and the gear head-cutter. Such relations may be provided by application of a CNC machine. The generation of the pinion is based on application of linear relations between the motions of the tool and the pinion being generated. The relations described above permit a parabolic function of transmission errors to be obtained that is able to absorb almost linear functions caused by errors of gear alignment. A computer code has been written for the meshing and contact of the spiral bevel gears with the proposed geometry. The effect of misalignment on the proposed geometry has also been determined. Numerical examples for illustration of the proposed theory have been provided. Litvin, F. L. and Zhao, X. Glenn Research Center...
Book Synopsis COMPARISON OF EXPERIMENTAL AND ANALYTICAL TOOTH BENDING STRESS OF AEROSPACE SPIRAL BEVEL GEARS... NASA/TM-1999-208903... MAR. 26, 1999 by : United States. National Aeronautics and Space Administration
Download or read book COMPARISON OF EXPERIMENTAL AND ANALYTICAL TOOTH BENDING STRESS OF AEROSPACE SPIRAL BEVEL GEARS... NASA/TM-1999-208903... MAR. 26, 1999 written by United States. National Aeronautics and Space Administration and published by . This book was released on 1999* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722618063 Total Pages :52 pages Book Rating :4.6/5 (18 download)
Book Synopsis Local Synthesis and Tooth Contact Analysis of Face-Milled, Uniform Tooth Height Spiral Bevel Gears by : National Aeronautics and Space Administration (NASA)
Download or read book Local Synthesis and Tooth Contact Analysis of Face-Milled, Uniform Tooth Height Spiral Bevel Gears written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-08 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Face-milled spiral bevel gears with uniform tooth height are considered. An approach is proposed for the design of low-noise and localized bearing contact of such gears. The approach is based on the mismatch of contacting surfaces and permits two types of bearing contact either directed longitudinally or across the surface to be obtained. Conditions to avoid undercutting were determined. A Tooth Contact Analysis (TCA) was developed. This analysis was used to determine the influence of misalignment on meshing and contact of the spiral bevel gears. A numerical example that illustrates the theory developed is provided. Litvin, F. L. and Wang, A. G. Glenn Research Center...
Book Synopsis User's Manual for Tooth Contact Analysis of Face-Milled Spiral Bevel Gears with Given Machine-Tool Settings by : National Aeronautics and Space Adm Nasa
Download or read book User's Manual for Tooth Contact Analysis of Face-Milled Spiral Bevel Gears with Given Machine-Tool Settings written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-11-12 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research was performed to develop a computer program that will: (1) simulate the meshing and bearing contact for face milled spiral beval gears with given machine tool settings; and (2) to obtain the output, some of the data is required for hydrodynamic analysis. It is assumed that the machine tool settings and the blank data will be taken from the Gleason summaries. The theoretical aspects of the program are based on 'Local Synthesis and Tooth Contact Analysis of Face Mill Milled Spiral Bevel Gears'. The difference between the computer programs developed herein and the other one is as follows: (1) the mean contact point of tooth surfaces for gears with given machine tool settings must be determined iteratively, while parameters (H and V) are changed (H represents displacement along the pinion axis, V represents the gear displacement that is perpendicular to the plane drawn through the axes of the pinion and the gear of their initial positions), this means that when V differs from zero, the axis of the pionion and the gear are crossed but not intersected; (2) in addition to the regular output data (transmission errors and bearing contact), the new computer program provides information about the contacting force for each contact point and the sliding and the so-called rolling velocity. The following topics are covered: (1) instructions for the users as to how to insert the input data; (2) explanations regarding the output data; (3) numerical example; and (4) listing of the program. Litvin, Faydor L. and Zhang, YI and Chen, Jui-Sheng Unspecified Center...
Book Synopsis Experimental and Analytical Assessment of the Thermal Behavior of Spiral Bevel Gears by : Robert F. Handschuh
Download or read book Experimental and Analytical Assessment of the Thermal Behavior of Spiral Bevel Gears written by Robert F. Handschuh and published by . This book was released on 1995 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Local Synthesis and Tooth Contact Analysis of Face-milled Spiral Bevel Gears by : Faydor L. Litvin
Download or read book Local Synthesis and Tooth Contact Analysis of Face-milled Spiral Bevel Gears written by Faydor L. Litvin and published by . This book was released on 1991 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computerized Design and Analysis of Face-milled, Uniform Tooth Height, Low-noise Spiral Bevel Gear Drives by : Faydor L. Litvin
Download or read book Computerized Design and Analysis of Face-milled, Uniform Tooth Height, Low-noise Spiral Bevel Gear Drives written by Faydor L. Litvin and published by . This book was released on 1996 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
