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Aviation History
1925
1925 - 0324.PDF
MAY 28, 1925 without any cowling. The L.F.G. V.40 has a span of 11 -4 m.(37 ft. 5 ins.) ; a wing area of 18 sq. m. (194 sq. ft.), and a total loaded weight of 829 kg. (1,825 lb.). The top speed isstated to be 150 km./h. (93 m.p.h.), with a landing speed of 75 km./h. (46 m.p.h.). The V.42 is somewhat similar in appearance to the V.40.but is a somewhat larger machine and fitted with a 100 h.p. Mercedes engine. Like the V.40 it is an all-metal cantilevermonoplane, the wing span being 12-6 m. (41 ft. 4 ins.), and the wing area 24 sq. m. (258 sq. ft.). The total loaded weight is 1,069 kg. (2,350 lbs.). The topspeed is 145 km.'h. (90 m.p.h.), and the landing speed 68 km./h. (43 m.p.h.). The V.44 is of the same o.a. dimensions and exactly similarto the V.40, but it is of particular interest to readers of FLIGHT on account of the fact that it is fitted with a The Bristol " Lucifer " engine in the L.F.G. V.44. Bristol " Lucifer " engine of 100 h.p. The photograph of the V.44 and of the installation of the Bristol " Lucifer " will be found herewth. In the V.52 Herr Baatz has returned to wood construction, as he maintains that the question nowadays is not metal or wood, but rather which types it pays to build in wood and which in metal. The V.52 is a small semi-cantilever mono- plane with 55 h.p. Siemens engine. The fuselage is ply-wood covered and the wing is built up of box-spars and three-ply ribs with fabric covering. Like the other L.F.G. machines, the V.52 is a two-seater and has a wing span of 10 m. (32 ft. 10 ins.), and a wing area of 13-28 sq. m. (143 sq. ft.). The estimated top speed is 145 km./h. (91 m.p.h.), and the land- ing speed 60 km./h. (37-5 m.p.h.). The «'Spandau" The machine entered by the Flugtechnischer Verein Spandau was designed by the technical chief of this Society, Herr Ing. Kurt Krokowski, and was constructed under his direction by members of the Society. Like the Darmstadt " Mohamed " it is, therefore, entirely a private effort and as such deserves every encouragement. Both fuselage and wing are largely of three-ply wood construction, and the machine is a pure cantilever light monoplane two-seater. The two halves of the wing are attached by tubular bolts to short wing air-cooled rated at 30 h.p. The span of the machine is 11-4 m. (37 ft. 5 ins.), and the overall length 5-7 m. (18 ft. 9 ins.). The wing chord at the root is 1 -8 m. (5 ft. 11 ins.), and at the tips is 0-6 m. (1 ft. 11 ins.). The wing area is 13 sq. m. (140 sq.ft.). The top speed is approximately 130 km./h. (80 m.p.h.), and the low speed is 60 km./h. (37 m.p.h.). The side view of the " Spandau " is given herewith and a three-quarter front view ol the machine was published in our issue of Ma)' 14, 1925. Udet-Flugzeugbau G.M.B.H. Although one of the younger German firms, the Udet works of Munich have shown quite surprising energy since the foundation of the firm a few years ago. In the Round- Germany flight a considerable number of machines are entered, most of which have been described in FLIGHT from time to time. At least one new type has been produced for the competition, and curiously enough this is a biplane, the U.I2—so far as we are aware, the first biplane to be produced by this firm. To deal with the Udet machines in the order of their The Udet U.7 ("Kolibri ") has a British Douglas engine. series numbers, the U.7 is a light monoplane with British Douglas engine. The machine has previously been described and illustrated in FLIGHT, and is shown again this week in a photograph and a set of general arrangement drawings. The fuselage is of the ply-wood covered type, and the canti- lever monoplane wing is mounted parasol fashion above the fuselage, on pyramids formed by streamline steel tubes, so that the pilot sits under the wing, where, consequently, he has an excellent view in all directions except straight upwards. Already the LT.7 (" Kolibri ") has several excellent per- formances to its credit, and it may be expected to do well in the competition. Its main dimensions are: Length o.a., 5.47 m. (17 ft. 11 ins.) ; span, 10 m. (32 ft. 10 ins.) ; wing area, 12*5 sq. m. (134 so. ft.). The weight empty is 150 kg. (330 lbs.) ; useful load' 100 kg. (220 lbs.) ; total loaded weight 250 kg. (550 lbs). The top speed is 120 km./h. (75 m.p.h.) and landing speed 50 km./h. (31 m.p.h.). The Udet U.8, which has also been previously described in FLIGHT, is a commercial monoplane of very clean design. Side view of the Flugtechnischer Verein '' Spandau '' monoplane. The engine is a Haacke of 30 h.p. roots integral with the fuselage, and may be dismantled by simply undoing the bolts. The fuselage is of streamline form, and the various members such as wing roots, vertical fin and undercarriage legs, are carefully faired into the fuselage covering. The power plant is a 30 h.p. two-cylinder Haacke The Udet U.12 ("Flamingo") is believed to be the first biplane built by the Udet firm. The engine is a Siemens. This also is shown in a photograph and by scale drawings. The ply-wood covered fuselage is of streamline form, and the cabin has seating accommodation for three passengers. The pilot's cockpit is in front of and above the cabin. 324
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