Download or read book Rust Inhibitor Contamination Related Problems in Military Aircraft Hydraulic Systems written by CE. Snyder and published by . This book was released on 2001 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stuck servovalves were observed during pre-flight checks in some aircraft using MIL-PRF-83282 hydraulic fluid. Analysis of hydraulic fluid samples and stuck valves as described in the paper provided a link between valve failures and barium dinonylnaphthalene sulfonate (BSN) content of the hydraulic fluid. The BSN contamination was traced to residual MIL-PRF-6083 preservative fluid that had not been drained from components before installation on the aircraft. The hypothesis was validated by laboratory tribological experiments using a reciprocating tribometer and grazing angle microscope Fourier transform infrared spectroscopy. Corrective actions included reemphasizing procedures to drain MIL-PRF-6083 from components and establishing a 10 ppm maximum limit for barium in new MIL-PRF-83282.
Download or read book Hydraulic Failure Analysis written by George E. Totten and published by ASTM International. This book was released on 2001 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a December 1999 symposium held in Reno, this collection of 41 papers reviews new technologies being developed to address hydraulic wear and failure problems. The main subjects are tribological design, failure analysis, improved materials, seals, and the effects of fluids on hydraulic pump w
Download or read book Degradation Limits of Hydrocarbon Based Hydraulic Fluids MIL PRF 5606 MIL PRF 83282 and MIL PRF 87257 Used in Hydraulic Test Stands written by A-6C3 Fluids Committee and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Aerospace Information Report (AIR) presents data on normally accepted changes in physical properties and contamination levels for military hydraulic fluids used in hydraulic test stands. This information is of importance to all users of hydraulic test stands to assure the performance data obtained on these test stands for specific components will not be adversely affected by excessive changes in fluid properties or contamination levels. The data pertains to fluids conforming to specifications MIL-PRF-5606, MIL-PRF-83282, and MIL-PRF-87257. The guidelines incorporated in the AIR are the general consensus values of knowledgeable professionals. However, the experience and judgment of engineers and operators responsible for the equipment must be relied upon to determine when the hydraulic fluid is to be replaced. This document is being revised to update the specification numbers for the fluids, to add MIL-PRF-87257, and to delete the non-aerospace rust inhibited hydraulic fluids. In addition, a maximum allowable limit for barium is being added due to the problems experienced when barium gets introduced to the aircraft hydraulic system.
Download or read book The Mechanism of Corrosion Inhibition by Dinonylnaphthalenesulfonates written by Paul J. Kennedy and published by . This book was released on 1978 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Operability of combat and support equipment can be seriously compromised by rusting of power train components. As a preventative measure, most lubricants in the Army Supply System are rust inhibited. Sulfonates, such as the petroleum sulfonates and salts of dinonylnaphthalenesulfonic acid, have proven to be effective rust preventatives for Army lubricants, however, their use is limited due to their high temperature instability and viscosity. New rust inhibitor systems are needed for formulation into a variety of fluids such as turbine engine oils, aircraft hydraulic fluids and the newer synthetic nonhydrocarbon fluids. A basic understanding of the rust inhibition mechanism is needed in order to accomplish this task and to keep pace with potential rust problems associated with advanced Army systems.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AMPTIAC Quarterly written by and published by . This book was released on 2003 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbine Oil Monitoring written by William C. Young and published by ASTM International. This book was released on 1989 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion Preventing Characteristics of Military Hydraulic Fluids Part II written by and published by . This book was released on 2006 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic systems are widely used in a variety of military applications including ground vehicles, aircraft, and weapon systems. The impact of corrosion on hydraulic systems and its components is well understood; however, the protection provided by different hydraulic fluids is not equal. Review of military vehicle hydraulic systems identified the most common occurrences of critical corrosion are found in hoses, hose end fittings, actuator arms, pistons, cylinders, and rams. To prevent corrosion in hydraulic systems, the U.S. Army has specified the use of hydraulic fluids with corrosion preventing and rust inhibiting characteristics for ground vehicles. Currently, the Army uses three different types of fluids in the hydraulic systems of military ground vehicles and equipment: MIL-PRF-46170, MIL-PRF-6083, and MIL-PRF-2104. To verify the corrosion protection performance of the fluids, the Fuels and Lubricants Technology Team (FLTT) of U.S. Army Tank Automotive Research Development and Engineering Center (TARDEC) continued an investigation to compare the corrosion preventing characteristics of military hydraulic fluids and engine oils based on standardized hydraulic fluid corrosion tests found in the hydraulic fluid specifications. The test results continue to show that MIL-PRF-6083 and MIL-PRF-46170 provide better corrosion protection than other non-rust inhibiting military hydraulic fluids. This follow-up report will provide updated test results demonstrating improved corrosion protection can be achieved for Army ground vehicle systems.
Download or read book Synthetics Mineral Oils and Bio Based Lubricants written by Leslie R. Rudnick and published by CRC Press. This book was released on 2013-02-04 with total page 1019 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlighting the major economic and industrial changes in the lubrication industry since the first edition, Synthetics, Mineral Oils, and Bio-Based Lubricants, Second Edition outlines the state of the art in each major lubricant application area. Chapters cover trends in the major industries, such as the use of lubricant fluids, growth or decl
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydraulic Fluids written by United States. Army Materiel Command and published by . This book was released on 1971 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerospace Chlorinated Solvent Contamination of MIL H 5606 MIL H 83282 Vehicle Hydraulic Systems written by A-6C3 Fluids Committee and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although there is controversy regarding the chemical form of chlorine and its relation to harmful effects in the hydraulic fluid (i.e., chloride ions versus organic chloro-compounds versus total chlorine in all forms), it is generally agreed that total chlorine content should be measured and controlled. In the near future, the ban on the manufacture of chlorinated solvents, out of concern for depletion of the ozone layer, may in itself diminish or eliminate chlorine contamination related aircraft malfunctions. It is generally accepted that hydraulic fluid contamination should be held to a minimum under all conditions. The benefits of low contamination levels are improved performance, lower maintenance due to lower wear, corrosion and erosion, longer fluid life, longer component life, etc.Contaminants can be classified into two general types: those that are insoluble and those that are soluble in the hydraulic fluid. The insoluble solid type is most common and is usually referred to as particulate matter. Its measurement and removal have been the subject of much investigation and standardization which is well documented in technical literature. The insoluble liquid type contaminant is much less common. The resulting two phase system is often observed as hazy or cloudy fluid appearance and the recommended action is to remove the contaminated hydraulic fluid from the system.Soluble type contaminants are more difficult to detect and to determine quantitatively. They can easily escape notice, particularly when present in small amounts. Gross contamination usually results in significant changes in fluid physical properties and can be determined by such changes. Smaller amounts are difficult to detect and measure and usually require sophisticated analytical techniques - such as infrared and other spectral techniques, gas chromatography (both head space and electron capture), microcoulometry, x-ray fluorescence, etc.Generally, the presence of undesirable soluble contaminants is unknown until they have been shown to cause performance problems. Hydraulic fluid formulations contain soluble additives in base stocks giving beneficial effects on performance. The range of possible undesirable soluble contaminants can encompass innumerable materials - solids, liquids or gases. This document has been determined to contain basic and stable technology which is not dynamic in nature.
Download or read book Corrosion Preventing Characteristics of Military Hydraulic Fluids written by and published by . This book was released on 2004 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic systems are widely used in a variety of military applications such as aircraft, ground vehicles, and weapon systems. The impact of corrosion on hydraulic systems and its components has been identified but is often not recognized. Project collaboration between the U.S. Army Research Lab, U.S. Army Corrosion Office, and Concurrent Technologies Corporation identified the most critical corrosion issues found in hydraulic systems to be hoses, hose end fittings, actuator arms, pistons, cylinders, and rams.
Download or read book Transactions of the American Society of Mechanical Engineers written by American Society of Mechanical Engineers and published by . This book was released on 1963 with total page 1202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 2, 4-11, 62-68 include the Society's Membership list; v. 55-80 include the Journal of applied mechanics (also issued separately) as contributions from the Society's Applied Mechanics Division.
Download or read book Technical Information Indexes written by United States. Naval Air Systems Command and published by . This book was released on 1974 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 1962 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Engineering for Industry written by and published by . This book was released on 1963 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
