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Development Of A Full Scale Transmission Testing Procedure To Evaluate Advanced Lubricants


Development Of A Full Scale Transmission Testing Procedure To Evaluate Advanced Lubricants
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Development Of A Full Scale Transmission Testing Procedure To Evaluate Advanced Lubricants


Development Of A Full Scale Transmission Testing Procedure To Evaluate Advanced Lubricants
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Author : David G. Lewicki
language : en
Publisher:
Release Date : 1992

Development Of A Full Scale Transmission Testing Procedure To Evaluate Advanced Lubricants written by David G. Lewicki and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.


Experimental tests were performed on the OH-58A helicopter main-rotor transmission in the NASA Lewis 500-hp Helicopter Transmission Test Stand. The testing was part of a joint Navy/NASA/Army lubrication program to develop a separate lubricant for gearboxes that would improve life and load-carrying capacity. The goal of the experiments was to develop a testing procedure using a MIL-L-23699 base reference oil to fail certain transmission components, and then to run identical tests with improved lubricants and demonstrate improved performance. The tests were directed at failing components that have given the Navy problems because of marginal lubrication. These failures included mast-shaft bearing micropitting, sun gear and planet bearing fatigue, and spiral bevel gear scoring. More than 900 hr of total run time were accumulated for these tests. Some success was achieved in developing a testing procedure to produce sun gear and planet bearing fatigue failures. Only marginal success was achieved in producing mast-shaft bearing micropitting and spiral bevel gear scoring.



Development Of A Full Scale Transmission Testing Procedure To Evaluate Advanced Lubricants


Development Of A Full Scale Transmission Testing Procedure To Evaluate Advanced Lubricants
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-02

Development Of A Full Scale Transmission Testing Procedure To Evaluate Advanced Lubricants written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-02 with categories.


Experimental tests were performed on the OH-58A helicopter main rotor transmission in the NASA Lewis 500-hp Helicopter Transmission Test Stand. The testing was part of a joint Navy/NASA/Army lubrication program. The objective of the program was to develop a separate lubricant for gearboxes and demonstrate an improved performance in life and load-carrying capacity. The goal of the experiments was to develop a testing procedure to fail certain transmission components using a MIL-L-23699 base reference oil, then run identical tests with improved lubricants and demonstrate performance. The tests were directed at failing components that the Navy has had problems with due to marginal lubrication. These failures included mast shaft bearing micropitting, sun gear and planet bearing fatigue, and spiral bevel gear scoring. A variety of tests were performed and over 900 hours of total run time accumulated for these tests. Some success was achieved in developing a testing procedure to produce sun gear and planet bearing fatigue failures. Only marginal success was achieved in producing mast shaft bearing micropitting and spiral bevel gear scoring. Lewicki, David G. and Decker, Harry J. and Shimski, John T. Glenn Research Center DA PROJ. 1L1-62211-A-47-A; RTOP 505-63-36...



Scientific And Technical Aerospace Reports


Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1992-11

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-11 with Aeronautics categories.




Development Of A Full Scale Transmission Testing Procedures To Evaluate Advanced Lubricants


Development Of A Full Scale Transmission Testing Procedures To Evaluate Advanced Lubricants
DOWNLOAD
Author : David G. Lewicki
language : en
Publisher:
Release Date : 1992

Development Of A Full Scale Transmission Testing Procedures To Evaluate Advanced Lubricants written by David G. Lewicki and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.




Preliminary Investigation Of The Thermal Behavior Of High Speed Helical Gear Trains


Preliminary Investigation Of The Thermal Behavior Of High Speed Helical Gear Trains
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Author :
language : en
Publisher:
Release Date : 2002

Preliminary Investigation Of The Thermal Behavior Of High Speed Helical Gear Trains written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.


A preliminary experimental investigation of the thermal behavior of high-speed helical gears will be presented. A full-scale torque regenerative test stand has been built to test a representative helical gear train as that used in tiltrotor aircraft. Power loss and temperature data from a wide range of operating conditions were measured. Loop power ranged up to 3730 kW (5000 hp). Drive system components representative of flight quality hardware were used in the test program. The results attained in this initial study indicated that windage losses due to the high rotational speeds that were tested were far more important than the losses due to the gear meshing losses.



Monthly Catalog Of United States Government Publications


Monthly Catalog Of United States Government Publications
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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1993

Monthly Catalog Of United States Government Publications written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Government publications categories.




Monthly Catalogue United States Public Documents


Monthly Catalogue United States Public Documents
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Author :
language : en
Publisher:
Release Date : 1993

Monthly Catalogue United States Public Documents written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Government publications categories.




Aeronautical Engineering


Aeronautical Engineering
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Author :
language : en
Publisher:
Release Date : 1993

Aeronautical Engineering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Aeronautics categories.


A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)



Nasa Scientific And Technical Publications


Nasa Scientific And Technical Publications
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Author :
language : en
Publisher:
Release Date : 1993

Nasa Scientific And Technical Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Aeronautics categories.




Nasa Scientific And Technical Publications A Catalog Of Special Publications Reference Publications Conference Publications And Technical Papers 1991 1992


Nasa Scientific And Technical Publications A Catalog Of Special Publications Reference Publications Conference Publications And Technical Papers 1991 1992
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Author :
language : en
Publisher:
Release Date : 1993

Nasa Scientific And Technical Publications A Catalog Of Special Publications Reference Publications Conference Publications And Technical Papers 1991 1992 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Aeronautics categories.