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Aviation History
1913
1913 - 1355.PDF
DECEMBER 20, 1913. I/LICHT The Henry Farman military ma:hine. 1 Flight " Copyrtsni. The extensions of the upper main planes are supported when the machine is on the ground, by wires passing over cabanes on lop of the plane. The tail plane and elevator are of the same type as those on the ordinary H. Farman biplane, but the shape of the rudder as well as the tail skid have been slightly modified. The chassis, which is really one 01 the most interesting features of the machine, consists of two stub axles pivoted at their upper ends from the ]K>int of attachment of the inner plane struts to the main spats, and working in a slot in the two guide tubes, which form the chassis struts. The wheel track is very wide —4 metres, to be exact—and one is inclined to think, that whilst a track of this width will of course prevent the machine from turning over on the ground, it will be found to render the machine practically unmanageable on a very rough surface, as in case of one of the wheels getting into a rut, the machine would have a tendency to spin around it. From Attachment of main float on M. Farman hydro. " Flight" Copyright. On the right one of the tall floats. The nacelle is of the usual H. Farman type, and is built up of four longerons of ash, on the rear ends of which are carried the engine bearers, and which converge in the front to form a good streamline entry for the air. The struts and cross-members are also of ash, and diagonal cross wiring gives rigidity to the whole structure. The nacelle is covered with thin oxydized sheet metal, which gives it a very business-like appearance. Inside the nacelh and immediately under the top plane which entirely covers them are the oil and petrol tanks. In order to facilitate the filling of the tanks a short length of tube projects forward and upwards until the filler cap is in line with the leading edge of the upper plane. One little point in connection with the mounting of the tanks illustrates the forethought and attention paid to details in the Farman machines. In order to prevent the tanks from springing a leak should the machine make a rough landing, these are sprung from the nacelle by means of rubber cushions or buffers introduced in the steel straps by which the tanks are attached to the nacelle. The seating arrangement, as well as the controls are of the usual H. Farman type. A single central tubular column operates the ailerons and the elevator, whilst the rudder is actuated by a pivoted foot-bar. The lower plane is of so short a span that one is a little in doubt whether to call the machine a biplane or a monoplane. Perhaps in time a word will be coined which expresses this type of machine. The Germans already have a word for it: Anderthalb- decker (one-and-a-half-decker). Four pairs of ash struts connect the two planes, the outer pairs being vertical, while the inner pairs slope downwards and outwards from the joint of the nacelle to the upper main spars. "Flight" Copyr Nacelle and floats of the M. Farman hydro-biplane. 1381
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