scholarly journals THE EFFECT OF BIOFUEL ADDITION TO FLIGHT KEROSENE ON A RUBBER GASKET / BIOKURO PRIEMAIŠŲ, DEDAMŲ Į AVIACINĮ ŽIBALĄ, POVEIKIS GUMINIAMS REAKTYVINIŲ VARIKLIŲ TARPIKLIAMS / ВЛИЯНИЕ ПРИМЕНЕНИЯ ПРИМЕСИ БИОТОПЛИВА В АВИАЦИОННОМ КЕРОСИНЕ НА РЕЗИНОВЫЕ ПРОКЛАДКИ РЕАКТИВНЫХ ДВИГАТЕЛЕЙ

Transport ◽  
2011 ◽  
Vol 26 (1) ◽  
pp. 106-110 ◽  
Author(s):  
Milan Olšovský ◽  
Marián Hocko
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Total Concentration ◽  
Methyl Esters ◽  
Aircraft Engine ◽  
Alternative Fuel ◽  
Jet Engines ◽  
Rubber Gasket ◽  
Jet Engine ◽  
Aircraft Fuel

This paper solves a problem of using unconventional fuels for driving jet engines. The carried out experiments were aimed at assessing the possibilities of using various contributions of MERO (methyl esters of rapseed oil) biofuel mixed with Jet A-1 aircraft fuel and for analyzing the influences of using an alternative fuel exerted upon the selected parts of the jet engine. The authors of the article compare the effect of adding bio-ingredients (MERO) to Jet A-1 aircraft fuel on the properties of rubber sealings used in the aircraft engine. The physical properties of MERO bio-ingredients and Jet A-1 aircraft fuel are very similar. The conducted research has discovered additional options of mixing MERO biofuel and Jet A-1 aircraft fuel and demonstrated that the total concentration (0–100%) of MERO biofuel in Jet A-1 aircraft fuel reaches a process of creating of a homogeneous mixture without sediments or coagulants. The evaluated results indicate that the appendage of the methyl esters of rapseed oil in Jet A-1 aircraft fuel give out a relatively large slump in physical-mechanical properties within the period of a few days. The raising content of MERO in aircraft fuel is bulking samples and makes itself felt by increasing the weight of the samples. Santrauka Straipsnyje nagrinėjama netradicinių kuro rūšių naudojimo reaktyviniuose varikliuose problema. Atlikti bandymai įvertino galimybes naudoti Jet A-1 aviacinį žibalą su RME (rapsų metilo esterių) biokuru. Analizuojama alternatyvaus kuro įtaka pasirinktoms reaktyvinio variklio dalims. Autoriai lygina Jet A-1aviacinio žibalo su RME biokuru, poveikį guminių tarpiklių, naudojamų reaktyviniuose varikliuose, savybėms. Fizinės RME biokuro ir Jet A-1 aviacinio žibalo savybės yra labai panašios. Atlikti tyrimai atskleidė papildomų galimybių, derinant RME biokurą ir Jet A-1 aviacinį žibalą, bei parodė, kad bendra RME biokuro koncentracija (0÷100%) Jet A-1 aviaciniame žibale sudaro vientisą mišinį be nuosėdų ir koaguliantų. Rezultatai rodo, kad per kelias dienas RME biokuro priedai, esantys Jet A-1 aviaciniame žibale, santykiškai pablogina reaktyvinių variklių guminių tarpiklių fizines ir mechanines savybes. Резюме В статье решается проблема использования нестандартных видов топлива для тяги авиационных реактивных двигателей. Целью проведённых экспериментов являлось обсуждение возможности использования смеси авиационного керосина Jet A-1 и биотоплива MERO (methylester of Rapsol Oil) в качестве альтернативного топлива, а также анализ ее влияния на определенные элементы реактивных двигателей. Авторы исследовали влияние концентрации биотоплива MERO в авиационном керосине Jet A-1 на свойства резиновых прокладок, применяемых в реактивных двигателях. Физические свойства этого биотоплива и авиационного керосина аналогичны. В течение исследования выяснилось, что при всех концентрациях биотоплива MERO (0÷100 %) и керосина Jet A-1возникает однородная смесь без осадков и коагулятов. Результаты исследований (измерений) показали, что примесь биотоплива MERO в авиационный керосин Jet A-1 повлекла за собой относительно большое изменение физико-механических свойств резиновых прокладок реактивных двигателей уже в течение нескольких дней. С увеличением доли биотоплива MERO в смеси повышается также интенсивность негативного влияния на резиновые прокладки.

Fatigue stress analysis of the DV-2 engine turbine disk

2019 ◽  
Vol 91 (4) ◽  
pp. 708-716 ◽  
Author(s):  
Jozef Čerňan ◽  
Karol Semrád ◽  
Katarína Draganová ◽  
Miroslava Cúttová
Keyword(s):  
Development Program ◽  
Software Tool ◽  
Aircraft Engine ◽  
Turbine Disk ◽  
Jet Engines ◽  
Jet Engine ◽  
Content Type ◽  
History Of ◽  
Residual Fatigue ◽  
Aviation Engines

Purpose The purpose of this study is to improve life prediction of certain components. Fatigue of the high-stressed structural elements is an essential parameter that affects the lifetime of such components. In particular, aviation engines are devices whose failure due to fatigue failure of one of the important components can lead to fatal consequences. Design/methodology/approach In this study, two analyses in the turbine disk of the jet engine during the simulated operating load were performed: The first one was the analysis of the heat-induced stresses using the finite element method. The goal of the second analysis was to determine the residual fatigue strength of a loaded disk by the software tool using the Palmgren - Miner Linear Damage Theory. Findings The results showed a high degree of similarity with the real tests performed on the aircraft engine and revealed the weak points in the design of the jet engine. Research limitations/implications It should be mentioned that without appropriate experiments, results of this analysis could not be verified. Practical implications These results are helpful in the re-designing of the jet engines to increase their technical feasibility. Originality/value Such analysis has been realized in the DV-2 jet engine research and development program for the first time in the history of jet engine manufacturing process in Slovakia and countries of Eastern Europe region.

PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL

2012 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Djoko Purwanto
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Treatment Process ◽  
Acacia Mangium ◽  
Physical And Mechanical Properties ◽  
Wood Fibers ◽  
Test Parameters ◽  
Mechanical And Physical Properties ◽  
Scale Scores

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

CONDULOY

Alloy Digest ◽  
1953 ◽  
Vol 2 (10) ◽  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
Heat Treating ◽  
Age Hardening ◽  
Beryllium Copper ◽  
Hardening Heat Treatment

Abstract CONDULOY is a low beryllium-copper alloy containing about 1.5% nickel. It responds to age-hardening heat treatment for improved mechanical properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on casting, heat treating, machining, and joining. Filing Code: Cu-11. Producer or source: Brush Beryllium Company.

ALUMINUM 2011

Alloy Digest ◽  
1978 ◽  
Vol 27 (12) ◽  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
High Temperature ◽  
Physical Properties ◽  
Copper Alloy ◽  
Heat Treating ◽  
Temperature Performance ◽  
Screw Machine ◽  
Aluminum Copper Alloy

Abstract ALUMINUM 2011 is an age-hardenable aluminum-copper alloy to which lead and bismuth are added to make it a free-machining alloy. It has good mechanical properties and was designed primarily for the manufacture of screw-machine products. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-32. Producer or source: Various aluminum companies. Originally published October 1955, revised December 1978.

BRUSH ALLOY 3

Alloy Digest ◽  
1983 ◽  
Vol 32 (3) ◽  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Copper Alloy ◽  
Elevated Temperatures ◽  
Physical And Mechanical Properties ◽  
Heat Treating ◽  
Good Resistance ◽  
Good Corrosion Resistance

Abstract BRUSH Alloy 3 offers the highest electrical and thermal conductivity of any beryllium-copper alloy. It possesses an excellent combination of moderate strength, good corrosion resistance and good resistance to moderately elevated temperatures. Because of its unique physical and mechanical properties, Brush Alloy 3 finds widespread use in welding applications (RWMA Class 3), current-carrying springs, switch and instrument parts and similar components. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, joining, and surface treatment. Filing Code: Cu-454. Producer or source: Brush Wellman Inc..

REYNOLDS 390 and A390

Alloy Digest ◽  
1971 ◽  
Vol 20 (8) ◽  
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
High Hardness ◽  
Heat Treating ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Temperature Performance

Abstract REYNOLDS 390 and A390 are hypereutectic aluminum-silicon alloys having excellent wear resistance coupled with good mechanical properties, high hardness, and low coefficients of expansion. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, and machining. Filing Code: Al-203. Producer or source: Reynolds Metals Company.

ALCAN 350

Alloy Digest ◽  
1957 ◽  
Vol 6 (7) ◽  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Physical Properties ◽  
Heat Treating ◽  
Casting Alloy ◽  
Aluminum Casting ◽  
Aluminum Casting Alloy ◽  
Good Corrosion Resistance ◽  
Aluminum Company

Abstract ALCAN 350 is a 10% magnesium-aluminum casting alloy having high mechanical properties, excellent machinability, and good corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-52. Producer or source: Aluminum Company of Canada Ltd.

FLYLITE ZRE-1

Alloy Digest ◽  
1952 ◽  
Vol 1 (2) ◽  
Keyword(s):  
Compressive Strength ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Base Alloy ◽  
Heat Treating ◽  
Jet Engine ◽  
Temperature Performance ◽  
Engine Components ◽  
Temperature Applications

Abstract Flylite ZRE-1 is a creep resistant magnesium-base alloy primarily designed for jet engine components and other high temperature applications. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as creep. It also includes information on high temperature performance as well as casting, heat treating, machining, and joining. Filing Code: Mg-2. Producer or source: Howard Foundry Company.

PD-135

Alloy Digest ◽  
1972 ◽  
Vol 21 (11) ◽  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Thermal Conductivities

Abstract PD-135 is an oxygen-free, age-hardenable copper containing chromium and cadmium. It has excellent mechanical properties and high electrical and thermal conductivities. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-261. Producer or source: Phelps Dodge Copper Products Company.

COPPER ALLOY No. 675

Alloy Digest ◽  
1971 ◽  
Vol 20 (11) ◽  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
Heat Treating ◽  
Zinc Alloy ◽  
Good Corrosion Resistance ◽  
Copper Zinc

Abstract COPPER ALLOY No. 675 is a copper-zinc alloy having excellent mechanical properties and good corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-244. Producer or source: Brass mills.

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