Process fluids of aero-hydraulic systems and their properties

<p>The article considers process fluids, which are presently applied to aviation hydraulic systems in domestic and world practice. Aviation practice deals with rather wide list of fluids. Based on the technical specification a designer makes the choice of specific fluid for the specific aircra...

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Main Authors: I. S. Shumilov, L. V. Сhursova, L. S. Sedova
Format: Article
Language:Russian
Published: MGTU im. N.È. Baumana 2014-01-01
Series:Nauka i Obrazovanie
Subjects:
Online Access:http://technomag.edu.ru/jour/article/view/575
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spelling doaj-9ecc5aa95b5741b58d1c298c87f172572020-11-24T22:33:51ZrusMGTU im. N.È. BaumanaNauka i Obrazovanie1994-04082014-01-010418722610.7463/0414.0705577575Process fluids of aero-hydraulic systems and their propertiesI. S. Shumilov0L. V. Сhursova1L. S. Sedova2Bauman Moscow State Technical UniversityAll-Russian scientific research institute of aviation materialsAll-Russian scientific research institute of aviation materials<p>The article considers process fluids, which are presently applied to aviation hydraulic systems in domestic and world practice. Aviation practice deals with rather wide list of fluids. Based on the technical specification a designer makes the choice of specific fluid for the specific aircraft. Process fluids have to possess the specified properties presented in the article, namely: lubricating properties; stability of physical and chemical characteristics at operation and storage; lowtemperature properties; acceptable congelation temperature; compatibility with materials of units and components of hydraulic systems; heat conductivity; high rigidity; minimum low coefficient of volume expansion; fire-explosion safety; low density. They should also have good dielectric properties, be good to resist to destruction of molecules, have good anticorrosion and antierosion properties, as well as not create conditions for emerging electro-kinetic erosion of spooltype and other precision devices, and a number of other properties.</p><p>The article presents materials on the oil-based process fluids with + (200-320) °C boiling temperature, gelled by a polymer of vinyl butyl ether, with aging inhibitor and dye for hydraulic systems of the subsonic and transonic aircraft which are combustible, with a temperature interval of use from — 60oС до +125oС. It also describes materials on process fluids, which are based on the mix of polydialkylsiloxane oligomers with organic diester aging inhibitors, and wear-resistant additive to be applied to the hydraulic systems of supersonic aircrafts using a fluid within the temperature interval from - 6О oС to +175oС for a long duration. The fire-explosion safety process fluids representing a mix of phosphoric esters with additives to improve viscous, anti-oxidizing, anticorrosive and anti-erosive properties are considered as well. They are used within the temperature range from - 60оС to +125оС with overheats up to +150оС.</p><p>The article shows experimentally attained properties of process fluids for the aviation hydraulic systems. These properties are essential in design engineering and operation of aircraft equipment.</p>http://technomag.edu.ru/jour/article/view/575densityprocess fluidshardnesscoefficient of volume expansionfire-explosion safetydestructionanticorrosion and anti-erosion propertieslubricating propertiescongelation temperaturedielectric properties
collection DOAJ
language Russian
format Article
sources DOAJ
author I. S. Shumilov
L. V. Сhursova
L. S. Sedova
spellingShingle I. S. Shumilov
L. V. Сhursova
L. S. Sedova
Process fluids of aero-hydraulic systems and their properties
Nauka i Obrazovanie
density
process fluids
hardness
coefficient of volume expansion
fire-explosion safety
destruction
anticorrosion and anti-erosion properties
lubricating properties
congelation temperature
dielectric properties
author_facet I. S. Shumilov
L. V. Сhursova
L. S. Sedova
author_sort I. S. Shumilov
title Process fluids of aero-hydraulic systems and their properties
title_short Process fluids of aero-hydraulic systems and their properties
title_full Process fluids of aero-hydraulic systems and their properties
title_fullStr Process fluids of aero-hydraulic systems and their properties
title_full_unstemmed Process fluids of aero-hydraulic systems and their properties
title_sort process fluids of aero-hydraulic systems and their properties
publisher MGTU im. N.È. Baumana
series Nauka i Obrazovanie
issn 1994-0408
publishDate 2014-01-01
description <p>The article considers process fluids, which are presently applied to aviation hydraulic systems in domestic and world practice. Aviation practice deals with rather wide list of fluids. Based on the technical specification a designer makes the choice of specific fluid for the specific aircraft. Process fluids have to possess the specified properties presented in the article, namely: lubricating properties; stability of physical and chemical characteristics at operation and storage; lowtemperature properties; acceptable congelation temperature; compatibility with materials of units and components of hydraulic systems; heat conductivity; high rigidity; minimum low coefficient of volume expansion; fire-explosion safety; low density. They should also have good dielectric properties, be good to resist to destruction of molecules, have good anticorrosion and antierosion properties, as well as not create conditions for emerging electro-kinetic erosion of spooltype and other precision devices, and a number of other properties.</p><p>The article presents materials on the oil-based process fluids with + (200-320) °C boiling temperature, gelled by a polymer of vinyl butyl ether, with aging inhibitor and dye for hydraulic systems of the subsonic and transonic aircraft which are combustible, with a temperature interval of use from — 60oС до +125oС. It also describes materials on process fluids, which are based on the mix of polydialkylsiloxane oligomers with organic diester aging inhibitors, and wear-resistant additive to be applied to the hydraulic systems of supersonic aircrafts using a fluid within the temperature interval from - 6О oС to +175oС for a long duration. The fire-explosion safety process fluids representing a mix of phosphoric esters with additives to improve viscous, anti-oxidizing, anticorrosive and anti-erosive properties are considered as well. They are used within the temperature range from - 60оС to +125оС with overheats up to +150оС.</p><p>The article shows experimentally attained properties of process fluids for the aviation hydraulic systems. These properties are essential in design engineering and operation of aircraft equipment.</p>
topic density
process fluids
hardness
coefficient of volume expansion
fire-explosion safety
destruction
anticorrosion and anti-erosion properties
lubricating properties
congelation temperature
dielectric properties
url http://technomag.edu.ru/jour/article/view/575
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AT lvshursova processfluidsofaerohydraulicsystemsandtheirproperties
AT lssedova processfluidsofaerohydraulicsystemsandtheirproperties
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