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Aviation History
1926
1926 - 0971.PDF
DECEMBER 16, 1926 EUS Three -quarterrear view of the Marcel B e s s o nM.B.36. The machine is fittedwith three "Jupi- ter " engines [" FLIGHT " Copyright is ^carried independently of the other on a species of trouserleg. The metal covering of this machine is lightly corrugated at intervals of 4 in. or so, the radius of the corrugationsbeing approximately a quarter of an inch, and the corrugations running in a fore and aft direction. According to Britishideas the rudder appears distinctly [small for a comparatively large machine, but should it be found to be inadequate it isof course a comparatively easy matter to remedy this defect, and the machine otherwise seems to have distinct possibilitiesas a high performance two-seater fighter. BERNARD (FERBOIS) THIS firm, one of whose machines holds the world's speedrecord, exhibits a very neat little single-seater fighter in which the designer has obviously been influenced by theFokker biplanes, in that he has employed a large top plane and a very diminutive bottom plane, the two braced togetherby a pair of Vee struts on each side, but without any external wire bracing. The top plane is roughly of elliptical planform, and the ailerons extend over the entire span with the exception of a very small cut-out in the centre immediatelyabove the cockpit. The whole machine is very carefully streamlined and looks as if it should be very efficient aero-dynamically. Constructionally the Bernard 15.C.I differs from the Fokkers in that it is an all-wood structure both asregards wings and fuselage. The speed of this machine is given as 260 km./h. (161 m.p.h.) and in view of the carefulstreamlining and with a Hispano engine of 500 h.p. it seems likely that this performance is actually attained. Whether inspired by the late arrival of the ArmstrongWhitworth " Ajax " or through mere coincidence, one cannot say, but one morning several days after the opening of theShow, a new type of Bernard machine was suddenly dis- covered on this stand. This was a type 12.C.I with Jupiterengine, and was of all-metal construction even to the cover- ing, which was in general principle similar to the coveringof an earlier single-seater shown by this firm at the 1924 Paris Show. This covering consists of sheet bent to channelsections, the flanges riveted internally to multiple spars. Certain changes were, however, to be noted in the way inwhich the width of these channels varied according to local requirements, doubtless with a view to facilitating construc-tion. No particulars of this machine were available up to the time of our representatives' leaving the exhibition, butdoubtless more will be heard of it in the future. Personally we prefer both the lines and the construction of the type15.C.1. MARCEL BESSON ALMOST the only machine in the exhibition concerning whichit was found difficult to obtain any detailed information was the large three-engined monoplane flying-boat exhibited byMarcel Besson. The machine has a very large flying-boat hull of rather pleasing lines, but the single step and straightVee bottom is scarcely in keeping with the most modern British ideas on the subject of flying-boat design. A placard on the stand announced that this machine, thetype M.B.36, with three Gnome-Rhone-Jupiter engines, has an area of 130 sq. m. (1,400 sq. ft.). The weight empty, butequipped, is given as 5,150 kg. (11,330 lbs.). The load carried is 2,850 kg. (6,275 lbs.), giving a total loaded weight of 8,000 kg.(17,600 lbs.). The commercial load is given as 1,350 kg. (3,000 lbs.) and the machine is said to have a range of900 km. (560 miles). A top speed of 180 km./h. (112 m.p.h.) is claimed. The machine has accommodation for 14 passengersand there are two large luggage compartments. The M.B.36 was exhibited with its wing uncovered, so thata certain amount of detail could be seen, although for some reason or other those in charge of the stand refused to haveanything on the machine sketched in detail. The wing structure did not impress one as being any too strong.Altogether the wing structure gave one the impression that ooooo ooo o o The Bleriot-Spad61 holds the world's altituderecord with a height of 12,442m.(40,800 ft.). [" FLIGHT " Photograph OOOOO O O o o o o o o o o o o o 827 D 2
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