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LFG Roland D.II КНИГИ ;ВОЕННАЯ ИСТОРИЯ LFG Roland D.II (Windsock Datafile 47)By Peter M. GroszPublisher: Albatros Productions Ltd199440 Pages ISBN: 0948414626PDF17 MBhe LFG Roland D.II used to be a German single-seat fighter of global struggle I. the sort was once synthetic via Luftfahrzeug Gesellschaft, and likewise by way of Pfalz Flugzeugwerke below license.The D.II used a plywood monocoque fuselage. layers of plywood strips have been spirally wrapped in opposing instructions over a mould to shape one half a fuselage shell. The fuselage halves have been then glued jointly, lined with a layer of material, and doped. the higher wing used to be hooked up to the fuselage through a wide vital pylon, enormously impairing the pilot's ahead imaginative and prescient. Armament consisted of dual "Spandau" LMG 08/15 desktop weapons buried within the fuselage decking.The D.II was once before everything powered by means of a a hundred and sixty hp Mercedes D.III engine, giving a best pace of 105mph at sea point. Later plane, distinct D.IIa, have been powered by way of an one hundred eighty hp Argus As.III. The As.III provided negative functionality above 3,000 m and the D.IIa used to be quite often relegated to operations at the jap Front.Nicknamed Haifisch (shark) for its modern visual appeal, the D.II and D.IIa proved commonly unpopular in provider because of negative fields of view and heavy controls. in spite of the fact that, it's also mentioned that the airplane had relatively delicate controls, rather within the yawing plane.[1] the kind is understood to were been utilized by Jasta 25 at their Canatlarzi base in Macedonia in 1917. importing BitroadDepositfiles eighty five

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Owing to very low usage of aviation gasoline today , the number of grades was reduced to three , but has recently increased to four. Aviation gasoline , to be versatile and non-restrictive in its use, requires very closely controlled volatility limits indicated by the Reid vapour pressure and the distillation tests . This immediately restricts the components that can he used in its production. The fact that the performance requirements are high still further reduces the available components. Because of the low quantity requirements and the limitation on the type of components that may be used, very few refineries now produce aviation gasoline at all, probably only four or five in Europe and the Middle East.

0 Density at 15°C. 3). 60001 1 I I 9 I g- :. O> < a> < ~. .. --0---0 Pour points xr: 10 c -c> / p al! 1 Freezing Point (D2386/IP16j The fuel sample contained in a double-walled glass tube is cooled by means of an external refrigerant , with continuous stirring. On the appearance of hydrocarbon crystals , the tube is removed from the refrigerant and allowed to warm slowly in 45 the ambient air, with continued stirring. SoC as the freezing point. This test result lies close to the cloud point, being the temperature at which the hydrocarbon crystals first appear on cooling without stirring , but differs significantly from the pour point where the crystals are so numerous that they interlock and give apparent solidity.

The techniques are similar in both cases, but the solvents are different. The basis of the process is that the feed , which has been pre-heated, is mixed with the lean solvent in an extraction unit. The aromatics dissolve in the solvent , and the raffinate leaves the top of the extractor. The aromatics-rich solvent leaves the base of the extractor and goes to a column at a higher temperature and lower pressure. This boils off the non-aromatic hydrocarbons which pass overhead, and the bottom product passes to a stripper operating at about 190°C and reduced pressure.

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