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Evaluation Of A Detector For Free Water In Fuel
Report Number: AFAPL TR 66-39
Author(s): Johnston, Robert K.; Monita, Charles M.
Corporate Author: Southwest Research Inst San Antonio TX
Corp. Rep. Number: RS-481
Laboratory: Air Force Aero Propulsion Laboratory
Publication Date: 4/1/1966
Pages: 52
Features: + Table(s)
Contract: AF 33(615)-2327
Project: 8169
Task: 816901
AD Number: AD0481506
Photo Enhancement: Not Needed
Abstract Text:
A test apparatus for detecting small amounts of free water in jet fuels, which was developed by a Navy group, has been subjected to various evaluations. The test method consists of passing a fuel sample through a dye-coated test pad and then comparing the fluorescence level of the pad under ultraviolet illumination with that of permanent color standards. Based on static evaluations of the apparatus using standard water-in-fuel dispersions, the accuracy and precision are well within 5 mg/liter in the range of free water contents up to 20 mg/liter. In analyzing effluent fuel from filter-separator tests by this method, it often shows traces of free water when the standard Karl Fischer analyses indicate undersaturated fuel; this apparent discrepancy is cause by nonequilibrium conditions of water distribution in the effluent fuel. Based on rather limited data, the sensitivity of the free water detector is not affected adversely by normal concentrations of anti-icing additive, corrosion inhibitor, or iron oxide contaminant in the fuels. In comparison with the Karl Fischer method, the free water detector is far simpler and faster and is believed to give more meaningful results. The detector appears to be very suitable for use in preproduction testing of filter-separators and elements. It should also be adaptable for use in base fuel quality control by relatively unskilled personnel, particularly if equipment manufacturers can develop prepackaged pad holders and comparator viewing instruments suitable for field use. Under field conditions, direct line sampling through a water detector pad will be more reliable than the use of bottled samples. It is recommended that field trials and further laboratory evaluations should be performed to establish more firmly whether the variety of fuel contaminants encountered in the field will interfere with the sensitivity of the method.
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Lubricity Properties Of High-Temperature Jet Fuels
Report Number: AFAPL TR 66-89 Part 2
Author(s): Appeldoorn, J. K.; Tao, F. F.
Corporate Author: Esso Research And Engineering Co Linden Nj Products Research Div
Laboratory: Air Force Aero Propulsion Laboratory
Publication Date: 9/1/1967
Pages: 164
Features: + Diagram(s) + Graph(s) + Photo(s) + Table(s)
Contract: AF 33(615)-2828
Project: 3048
Task: 304805
AD Number: AD0821576
Photo Enhancement: Complete
Abstract Text:
The study of the lubricity of jet fuels has been expanded to examine several new variables: hydrocarbon type, dissolved oxygen, dissolved water, higher temperatures, and metallurgy. Several important interactions have been found among these variables. The compounds most responsible for good lubricity are heavy aromaticsw. Removal of these materials during refining is the major cause of poor lubricity fuels. The heavy aromatics by themselves show unusual friction and wear behavior, giving low wear in air and scuffing in dry, inert atmospheres. Dissolved oxygen and water increase wear and friction by a corrosiion process. Corrosive wear appears to be the most serious cause of friction and wear problems of jet fuels. Nitrogen blanketing can eliminate wear completely in vane pump tests. Certain additives are effective only when water and air are present. A literature survey has been made of the effect of oxygen and water on lubrication. A methematical model of corrosive wear has been constructed and shows good agreement with experimental data. Higher temperatures give more wear and friction especially in air. However, oxidation of the fuel will form polar compounds that act as lubricity agents. Thisw reaction tends to mask the effect of temperature. Certain lubricity additives become much less effective at higher temperatures. Metals that resist corrosive wear, such as stainless steel, are better than chrome steel at low loads, but scuff more easily at higher loads. Future work will concentrate on higher temperatures and different metallurgies and the interaction of these variables with atmosphere and additive action.
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Microbial Contamination Of Usaf JP-4 Fuels
Report Number: AFAPL TR 66-91
Author(s): Finefrock, Viola H.; London, Sheldon A.
Corporate Author: Dayton Univ Oh Research Inst
Publication Date: 8/1/1966
Pages: 154
Project: 0
Task: 0
AD Number: AD0809366
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Rapid Site Preparation Techniques For Vtol Aircraft. Part I. General Development Of Materials And First Order Equipment
Report Number: AFAPL TR 66-116 Part 1
Author(s): Doughty, L. E., Jr.; Emmick, D. T.; Oneal, G. B.; Thomas, G. F.; Pascador, G.
Corporate Author: LTV Aerospace Corp Dallas TX Vought Aeronautics Div
Publication Date: 12/1/1966
Pages: 355
Project: 0
Task: 0
AD Number: AD0804931
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Rapid Site Preparation Techniques for VTOL Aircraft. Part II. Optimization of Materials and Equipment.
Report Number: AFAPL TR 66-116 Part 2
Author(s): Doughty, Leon E., Jr; Kelly, G. W.; Butler, J. E.; Dickens, W. J., III; Leary, E. J.
Corporate Author: Ltv Aerospace Corp, Dallas TX, Vought Aeronautics Div
Publication Date: 11/1/1968
Pages: 415
Project: 0
Task: 0
AD Number: AD0845166
Abstract Text:
Using chlorinated polyester resin and prefabricated fiber glass reinforcement, an improved application system for preparing remote landing and takeoff sites for VTOL aircraft was successfully demonstrated. The equipment prepared 6-foot wide strips of about one-pound-per-square-foot at a rate of 50 lineal feet per minute. Pad materials were of two types: one, a low temperature system for VTOL pads where short-term temperatures will not exceed 800F, and the second, a high temperature system for VTOL pads where short-term temperatures will not exceed 3000F. Additional site design data for site size and density were developed.
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Bibliography: On-Board In-Flight Checkout. Part I. Index
Report Number: AFAPL TR 66-130 Part 1
Author(s): Johnson, James L.
Corporate Author: IBM Federal Systems Div Owego Ny Electronics Systems Center
Publication Date: 12/1/1966
Pages: 42
Project: 0
Task: 0
AD Number: AD0807534
Abstract Text:
A literature search was made and an annotated bibliography prepared during the course of a study of On-Board In-Flight Checkout (OBIFCO). The bibliography covers documents of interest to the areas of on-board computers, checkout techniques, automatic checkout equipment, and related subjects. Part I of this report includes KWIC and author indices; Part II, (AD-807 536) the literature citations with comments. The work covers the period from January 1962 to mid-1966 and references reports, journal articles, and symposia.
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Bibliography: On-Board In-Flight Checkout. Part II. Literature Citations
Report Number: AFAPL TR 66-130 Part 2
Author(s): Johnson, James L.
Corporate Author: IBM Federal Systems Div Owego Ny Electronics Systems Center
Publication Date: 12/1/1966
Pages: 231
Project: 0
Task: 0
AD Number: AD0807536
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Role Of Adsorption In The Catalytic Para-Ortho-Hydrogen Conversion
Report Number: AFAPL TR 66-142
Author(s): Lander, Herbert R., Jr
Corporate Author: Air Force Aero Propulsion Lab Wright-Patterson AFB OH
Publication Date: 1/1/1967
Pages: 17
Project: 0
Task: 0
AD Number: AD0814417
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