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Aviation History
1919
1919 - 0338.PDF
V V jum l MARCH 13. 101' THE SIEMENS SINGLE-SEATER.—Machine gun mounting. fabric^is stitched to the ribs. All the wing spar fittings are so designed as to surround the spars, thus avoiding piercing. There are four ailerons of the balanced type, which are hinged to the rear spar. The ailerons are operated by steel tubes lying inside the plane, an arrangement which in addition to the advantage already referred to of safety against bullets, gives less head resistance than cables placed on the outside of the wing. (This is evidently a " crib " of the Nieuport type of control.—Editor FLIGHT.) The inter-plane struts are in the form of Vees, which have their pointed end secured to ajbridge piece of wood between the lower plane spars. Both front and rear struts of the Vee are of streamline section, and are hollowed out for lightness. The canopy (Baldachin) or centre section struts are braced by cables in such a manner that, by utilising the machine-gun bridge in the construction, they do not interfere with the s ghting and use of the guns. The'main wing bracing consists of two cables with a very high factor>of safety, while an external drift wire to the nose of the body is provided to afford extra safety during a long steep dive. The armament consists of two machine-guns, rigidlv mounted, and synchronised to fire through the propeller. Adjustment of the guns is made at the rear support. Sand tests carried out on the machine have given results far above the official specifications. During the most severe tests in the air, including dives and upside-down flights, no defects were found, and not a single part had taken a per manent set or stretch after the very severe test flights. One of the accompanying illustrations shows a barograph record taken under official tests and with the machine carrying its service load of 105 kg. The climbs are only to be described as exceptionally good, and have not, so far as is known, been equalled by our enemies. (This is not correct.—Editor FLIGHT.) The speed and manoeuvrability has drawn favour able comment from all quarters, and the machine has become a leading weapon in the hands of our skilful pilots. The View of the body construction of the Siemens Single-Seater. 33*
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