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Research Technique For Thermal Stability By Modified Jet Fuel Thermal Oxidation Test Jftot
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Author :Coordinating Research Council. Aviation Group on Oxidation Stability of Gas Turbine Fuels. JFTOT Evaluation Panel Publisher : ISBN 13 : Total Pages :71 pages Book Rating :4.:/5 (756 download)
Book Synopsis Research Technique for Thermal Stability by Modified Jet Fuel Thermal Oxidation Test (JFTOT). by : Coordinating Research Council. Aviation Group on Oxidation Stability of Gas Turbine Fuels. JFTOT Evaluation Panel
Download or read book Research Technique for Thermal Stability by Modified Jet Fuel Thermal Oxidation Test (JFTOT). written by Coordinating Research Council. Aviation Group on Oxidation Stability of Gas Turbine Fuels. JFTOT Evaluation Panel and published by . This book was released on 1978 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Coordinating Research Council. Aviation Group on Oxidation Stability of Gas Turbine Fuels. JFTOT Evaluation Panel Publisher : ISBN 13 : Total Pages :71 pages Book Rating :4.:/5 (249 download)
Book Synopsis Research Technique for Thermal Stability by Modified Jet Fuel Thermal Oxidation Test (JFTOT). by : Coordinating Research Council. Aviation Group on Oxidation Stability of Gas Turbine Fuels. JFTOT Evaluation Panel
Download or read book Research Technique for Thermal Stability by Modified Jet Fuel Thermal Oxidation Test (JFTOT). written by Coordinating Research Council. Aviation Group on Oxidation Stability of Gas Turbine Fuels. JFTOT Evaluation Panel and published by . This book was released on 1978 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Oxidation Stability of Diesel Fuels by :
Download or read book Thermal Oxidation Stability of Diesel Fuels written by and published by . This book was released on 1986 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: Injector fouling bench tests(IFBT) and modified Jet Fuel Thermal Oxidation Test(JFTOT, ASTMD 3241) have been used to develop methodology for evaluating the thermal stability of diesel fuels. A new method for measuring the thickness of lacquer-type fuel deposits formed on test surfaces at elevated temperatures has been developed and applied to a variety of fuels, both with and without MIL-S-53021(additive stabilizer package). The utility of this technique greatly expands the capability for exploring and defining diesel fuel thermal stability with respect to both material and kinetic studies. Correlation of IFBT and JFTOT types tests including definitions of temperature, flow, test surface metallurgy and fuel additive effects can now be performed to better understand diesel thermal stability and provide test methodology/test limit information for fuel specification consideration.
Book Synopsis Thermal Oxidation Stability of Aviation Turbine Fuels by : Robert N. Hazlett
Download or read book Thermal Oxidation Stability of Aviation Turbine Fuels written by Robert N. Hazlett and published by ASTM International. This book was released on 1991 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heat Transfer, Fluid Dynamics, and Autoxidation Studies in the Jet Fuel Thermal Oxidation Tester (JFTOT) by : Zachary Hugo Sander
Download or read book Heat Transfer, Fluid Dynamics, and Autoxidation Studies in the Jet Fuel Thermal Oxidation Tester (JFTOT) written by Zachary Hugo Sander and published by . This book was released on 2012 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern military aircraft use jet fuel as a coolant before it is burned in the combustor. Prior to combustion, dissolved O2 and other heteroatomic species react with the heated fuel to form insoluble particles and surface deposits that can impair engine performance. For safe aircraft operation, it is important to minimize jet fuel oxidation and resultant surface deposition in critical aircraft components. The Jet Fuel Thermal Oxidation Tester (JFTOT) is a thermal stability test that measures the tendency for fuel to form such deposits and delivers a pass/fail grade for each fuel tested. However, the extent of oxidation and the corresponding deposition occurring in the JFTOT is not fully understood. A JFTOT Model Mark II was modified to include a bulk outlet thermocouple measurement and a downstream oxygen sensor to measure bulk oxygen consumption. Experimental results show a direct relationship between the bulk outlet temperature and JFTOT setpoint temperature with the bulk outlet less than the setpoint temperature. Several fuels were also tested at varying setpoint temperatures with complete oxygen consumption by 320°C and a wide range of oxygen consumption from 10-85% at 260°C. Due to the complex fluid flows in the JFTOT, computational fluid dynamics (CFD) was used to model the heat transfer and fluid flow. A three-dimensional simulation showed considerable recirculation within the JFTOT due to buoyancy effects from gravity and resulted in complex residence time behavior. In addition, CFD simulations performed with a pseudo-detailed chemical kinematic mechanism showed an under prediction in both oxidation and deposition for similar fuels tested experimentally but yielded bulk outlet temperature predictions of less than 2% error. Simulations of deposition were of the right order of magnitude and matched the deposit profile of comparable experimental ellipsometry data.
Book Synopsis Analysis of Jet Fuel Thermal Oxidation Deposits by Spectral Fluorometric Technique by : JL. Brice
Download or read book Analysis of Jet Fuel Thermal Oxidation Deposits by Spectral Fluorometric Technique written by JL. Brice and published by . This book was released on 1993 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Jet Fuel Thermal Oxidation Test (JFTOT) is a widely used ASTM test procedure that evaluates the thermal stability of a fuel. It is evidenced by the fuel's resistance to undergo any chemical changes during increased thermal oxidative stress, until such time that a thermal breakpoint temperature is reached. A characteristic trace of the fuel is then deposited onto an aluminum test coupon and the fuel is rated on a pass/fail books relative to industry standards. Current rating systems approved by the industry for evaluating these tube deposit formations often fail to generate repeatable rating results. The required visual inspection of these deposit areas produces considerable uncertainty among many reviewers (due to a host of uncontrolled variables within the human observer). This paper will focus on the needs of the industry for an improved method of evaluating jet fuel thermal oxidation deposits using laser-induced spectral flourometry (SF). A novel device for reading these tube deposit areas from the cylindrical surface of an aluminum test coupon will be described as well. The overall technique yields an array of objective criteria for the evaluation of heater tube deposit areas and shows great potential for the identification of individual jet fuels on the basis of their fluorescent profiles.
Download or read book كتابشناسى موضوعى ايران written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Test Pressure on Fuel Thermal Stability Test Methods by : Royce P. Bradley
Download or read book Effect of Test Pressure on Fuel Thermal Stability Test Methods written by Royce P. Bradley and published by . This book was released on 1975 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: The boiling of turbine fuels in contact with the metal surface of the Jet Fuel Thermal Oxidation Tester (JFTOT) test section was investigated. The boiling inception pressure was determined at several temperatures. Incipient boiling was determined by observing the pressure-temperature combination at which a power increase occurred in order to vaporize the fuel. A glass test housing was used to visually determine the bubble points of the fuels. The initiation of boiling was found to occur at the pressure-temperature combination where an increase in power was required to vaporize the fuel. Thus, the two techniques used produce identical results. The bubble points for various fuels were calculated using ASTM Method D-2889, Calculation of True Vapor Pressure of Petroleum Distillate Fuels. Good agreement exists between the measured bubble points and the calculated bubble points. Data is presented to show that boiling of the fuel may adversely affect the apparent thermal stability breakpoint of the fuel. It is recommended that the JFTOT operating pressure be increased from 400 psig to 500 psig to decrease the probability of fuel boiling in the JFTOT during a test. Based on lower operating pressure of the ASTM/CRC Fuel Coker, it is apparent that boiling of JP-4 and Jet B wide-cut fuels is likely under the current jet fuel test conditions of 300/400 F. Thus, the Fuel Coker thermal stability breakpoints of wide-cut fuels are likely to be in error. (Author).
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Safety Literature written by and published by . This book was released on 1979 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of the Effect of Pretest Ratings of Jet Fuel Thermal Oxidation Tester Tubes on Post-Test Ratings Using the Tube Deposit Rater by : AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OHIO.
Download or read book Determination of the Effect of Pretest Ratings of Jet Fuel Thermal Oxidation Tester Tubes on Post-Test Ratings Using the Tube Deposit Rater written by AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OHIO. and published by . This book was released on 1977 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Jet Fuel Thermal Oxidation Tester (JFTOT) is used by the Air Force to determine the thermal stability of JP-4 and JPTS type fuels. A device called the Tube Deposit Rater (TDR) has been proposed as a means of evaluating the deposits formed on JFTOT tubes. (Author) Concern has existed about the need to account for the pretest condition of the test tubes. The effect of pretest ratings is discussed in the report and a method is proposed for improving results by accounting for the pretest condition of the tubes. (Author).
Book Synopsis Standard Test Method for Thermal Oxidation Stability of Aviation Turbine Fuels (JFTOT Procedure). by :
Download or read book Standard Test Method for Thermal Oxidation Stability of Aviation Turbine Fuels (JFTOT Procedure). written by and published by . This book was released on 1998 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aviation Fuel written by Perry W. Kirklin and published by ASTM International. This book was released on 1992 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: For technical readers in the aviation and fuel industries, and in testing laboratories, explores the history and philosophy of the thermal stability of aviation fuel, and considerations during the fuel's manufacture, storage and transport, use, and assessment. The 13 papers, representing a number of
Book Synopsis Correlation Study of Thermal Stability Test Methods by : Leonard C. Angello
Download or read book Correlation Study of Thermal Stability Test Methods written by Leonard C. Angello and published by . This book was released on 1975 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted to determine the degree of correlation between aviation turbine fuel thermal stability test methods ASTM D 1660 and ASTM D 3241. The primary parameters investigated in the study were tube deposit and filter pressure drop breakpoint temperatures as evaluated on the ASTM-CRC Fuel Coker and the JFTOT thermal stability test devices. Correlations are classified by fuel type (JP-4 and kerosene type), tube deposit rating method (Visual, Spun 18 and Spot 20), and order of curve fit (linear and quadratic).
Author :North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development Publisher : ISBN 13 : Total Pages :192 pages Book Rating :4.:/5 (29 download)
Book Synopsis AGARD Advisory Report by : North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development
Download or read book AGARD Advisory Report written by North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development and published by . This book was released on 1982 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Effect of Hydrocarbon Fuel Type on Fuel by :
Download or read book Effect of Hydrocarbon Fuel Type on Fuel written by and published by . This book was released on 1982 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
