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Tuesday, August 4, 2020 | History

3 edition of Evaluation of advanced lubricants for aircraft applications using gear surface fatigue tests found in the catalog.

Evaluation of advanced lubricants for aircraft applications using gear surface fatigue tests

Evaluation of advanced lubricants for aircraft applications using gear surface fatigue tests

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  • 34 Currently reading

Published by National Aeronautics and Space Administration, US Army Aviation Systems Command, Aviation R&T Activity, For sale by the National Technical Information Service, distributor in [Washington, D.C.], [St. Louis, Mo.], [Springfield, Va .
Written in English

    Subjects:
  • Additives.,
  • Fatigue life.,
  • Fatigue tests.,
  • Gears.,
  • Lubricants.,
  • Lubrication.,
  • Pitting.,
  • Steels.,
  • Viscosity.

  • Edition Notes

    StatementDennis P. Townsend and John Shimski.
    SeriesNASA technical memorandum -- 104336., AVSCOM technical report -- 91-C-007., AVSCOM technical report -- 91-C-7.
    ContributionsShimski, John T., United States. National Aeronautics and Space Administration., United States. Army Aviation Research and Technology.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15400269M

    Lubricant Aircraft products (Page 1) are available at Jaco Aerospace, offering over 1,, aircraft MRO and GSE supply products. Jaco Industrials, Inc. has been recognized as one of the worlds leading distributors for aircraft MRO and GSE supplies. Aerospace applications have some of the most demanding requirements when it comes to lubrication. Compared to automotive applications, for example, the temperature ranges where a single lubricant must perform are considerably broader. Military aerospace applications can involve even greater extremes, in addition to other requirements, such as long storage life. Steve Johnston, Technical.

      An innovative lubrication system for aircraft engines That huge jet turbine engine under the wing of your long-distance airliner needs lubrication to run just like the more modest car engine. Yet keeping this complex power plant lubricated presents more of a challenge than most. Gear Test Method provides an efficient method to screen advanced lubricant additive formulations and advanced bearing and gear steels. Screening and down-selection of advanced additives shows the feasibility to significant improvement aviation oil wear and scuffing performance with stainless steels. REFERENCES 1.

    01/03 France: Total winner at the Storexpert fair! 24/02 The USA: Great news for Aston Martin! 20/01 The UK: PRESLIA GT turbine oil powering . Speciality aircraft and aerospace lubricants for the aviation industry. High performance, MIL, NATO and NASA approved lubricating oils and greases. Synthetic lubricants for use in extreme temperatures, pressure bearing loads, high speeds, harsh chemicals and oxidisers including liquid oxygen.


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Evaluation of advanced lubricants for aircraft applications using gear surface fatigue tests Download PDF EPUB FB2

Evaluation of Advanced Lubricants for Aircraft Applications Using Gear Surface Fatigue Tests Dennis P. Townsend Lewis Research Center Cleveland, Ohio and John Shimski Naval Air Propulsion Center Trenton, New Jersey Prepared for the 27th Joint Propulsion Conference cosponsored by AIAA, SAE, ASEE and ASME Sacramento, California, JuneGet this from a library.

Evaluation of advanced lubricants for aircraft applications using gear surface fatigue tests. [Dennis P Townsend; John T Shimski; United States. National Aeronautics and Space Administration.; United States. Army Aviation Research and Technology.].

Surface Fatigue Lives of Case-Carburized Gears With an Improved Surface Finish T. Krantz.“Evaluation of Advanced Lubricants for Aircraft Applications Using Gear Surface Fatigue Tests,” NASA TM 4.

Townsend, D. P., and Shimski, J.,“Evaluation of the EHL Film Thickness and Extreme Pressure Additives on Gear Cited by: Dennis P. Townsend has written: 'Evaluation of advanced lubricants for aircraft applications using gear surface fatigue tests' -- subject(s): Pitting, Lubricants, Viscosity, Lubrication, Fatigue.

Surface fatigue life of high temperature gear materials [microform] / Dennis P. Townsend; Surface fatigue life and failure characteristics of EX, CBS M, and AISI gear materials [micr Evaluation of advanced lubricants for aircraft applications using gear surface fatigue tests [microform].

The lubricants selected for evaluation are described in Table 1. They fall into two major categories: (1) lubri-cants bonded or plated onto the surfaces to be lubricated, and (2) lubricants transferred to the balls and races from the retainer surface bearing operation.

Table 1. Lubricants selected for evaluation. stresses, fatigue analysis was carried out to find fatigue life of the nose landing gear with different fatigue load spectra.

Keywords: Nose landing gear, linear static, fatigue, MSC Patran, nastran. Tests were conducted using the single-tooth bending method to achieve crack initiation and propagation. Tests were conducted on spur gears in a fatigue test machine using a dedicated gear test. The F also offers an example of using PPFE lubricants to improve performance for traditionally non-lubricated materials, such as the Vespel variable vane brushes found in the F lift fan.

PFPE Lubricants in Aerospace. Failure in aerospace applications is not an option, especially since operating conditions in aerospace can be severe.

Rationale: ARP contains general technology for fatigue testing of landing gear and landing gear components and which is considered stable for general use. Landing gear Original Equipment Manufacturers (OEMs) currently utilize proprietary practices for fatigue testing landing gear and landing gear components, and they are unwilling to share this technology with industry.

Spur gear endurance tests were conducted to investigate the surface pitting fatigue life of noninvolute gears with low numbers of teeth and low contact ratios for the use in advanced application. The results were compared with those for a standard involute design with a low number of teeth. Landing gear is the critical component for aircrafts’ flight safety.

According to the statistics, the accidents caused by the structure of landing gears and other structures relating to landing gears probably account for more than two thirds of the structural accidents. Fatigue failure is a key failure mode when the landing gears under the condition of alternating loads.

Hard coatings have potential for increasing gear surface fatigue lives. Experiments were conducted using gears both with and without a metal-containing, carbon-based coating. The gears were case-carburized AISI steel spur gears. Some gears were provided with the coating by magnetron sputtering.

Lives were evaluated by accelerated life tests. Symposium on Fatigue Tests of Aircraft Structures: Low-Cycle, Full-Scale, and Helicopters (ASTM Special Technical Publication No.

) [unknown] on *FREE* shipping on qualifying offers. Symposium on Fatigue Tests of Aircraft Structures: Low-Cycle, Full-Scale, and Helicopters (ASTM Special Technical Publication No. ABOUT THE PROGRAM. ASTM’s Industrial Gear Oil Proficiency Testing Program provides laboratories with a statistical quality assurance (SQA) tool, enabling them to compare, improve, and maintain, a high level of performance in the use of ASTM methods with other laboratories worldwide.

@article{osti_, title = {Elevated Temperature Fracture Toughness and Fatigue Testing of Steels for Geothermal Applications}, author = {Cutler, R A and Goodman, E C and Hendrickson, R R}, abstractNote = {Conventional drill bit steels exhibit increased wear and decreased toughness when run at elevated temperatures in geothermal wells.

RAT – Tech Facts, NOT Myths. Q and A; J An example of this regarding motor oil is, a typical Gear Head has been using some high zinc oil, or some oil with an aftermarket zinc additive also poured in. 5W30 Renewable Lubricants, Super High Performance Passenger Vehicle, Bio-SynXtra, motor oil =psi.

Gear surface fatigue endurance tests were conducted on two groups of 10 gears each of carburized and hardened AlSI spur gears manufactured from the same heat of material 46 A Computer Solution for the Dynamic Load, Lubricant Film Thickness, and Surface Temperatures in Spiral-Bevel Gears (March/April ).

D Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIF, Spark-Ignition Engine. E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications. E Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS) Military Specification.

MIL-LD Lubricating Oil, Gear. Laboratory Engine Tests Field Testing Precision and Accuracy; Testing Statistics of Automotive Lubricants Basic Statistical Principles Laboratory Tests on Petroleum Products Engine Tests Reference Lubricants Reference Fuels Tests on Used Oils Tests for Evaluation of Oil Condition.

to run hotter. There is no advantage to using a gear lube with a viscosity greater than that required by the application. Conversely, gear lube that is too thin will not have sufficient load-carrying ability to meet the equipment requirements. A Study of Automotive Gear Lubes 4 MIL-PRFE/ Brand API MIL-LD SAE J Batch Number GL-5 MTProducts and services Improving the performance of your entire fleet Our unique, nose-to-tail product offer provides high-quality fuels, jet oils, hydraulic fluids, greases and other aviation lubricants to help your aircraft run smoothly and efficiently.

Rolling contact fatigue (RCF) of rail can be a significant problem affecting safety and maintenance. Rail materials have been optimized to reduce it, but not enough is known about how friction management products applied to the rail affect crack growth.

This study presents experimental results carried out to explore the influence of different lubricants and application orders on wear and pre.