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Aviation History
1910
1910 - 0326.PDF
[pjGHT APRIL 30, 1910. of the main planes, and are not, therefore, subjected to any appreciably direct bending strain. Materials of Construction. The greater part of the framework of the machine has been made of a fine quality American yellow pine, but there is a limited amount of tubular metal work, and a little hard wood is also used in places. A pair of tubular steel struts are situated in the centre of the main-planes on either side of the engine, and these members have been employed as water pipes to communicate with the radiator, which lies below the upper deck. The machine is mounted upon a pair of pneumatic-shod wheels, which are inde pendently attached to the frame, and together afford a very wide track. Each wheel is mounted on a short axle held by a massive wooden fork, which is hinged to the frame, and attached to a pneumatic spring. Jutting out from the fork is a bow-shaped member of ash forming a fender, which is intended as a protection to the more important parts of the machine in the event of accident. The " Flight " Copyright. Detail view of the chassis suspension on the Maxim biplane. are arched and form dihedral angles with the central section. This disposition of the planes is made for the purpose of intro ducing a factor of natural stability. The central section carries the engine and the pilot's seat, both being located on the lower deck, so that the centre of gravity is con siderably below the centre of lifting effect. The elevator and the tail are both pivoted to the extremities of two tubular spars that run fore and aft the whole length of the machine. These spars constitute the main members of the framework and are a very important feature of the design. They also carry the propellers and thus save the weight of independent brackets for this purpose. They are built up in three lengths, the central portion being steel and the two outer members being aluminium. The latter are stayed by diagonal struts to the lower deck iniiiiiiiiiiiiiiiuiii., HHIIIIIIIIIIIIIIIIIIli niiiiiiiini Milium " Flight " Copyright. View showing the construction of the framework of the main planes of the Maxim biplane. 324 " Flight " Copyright, View of the chassis of the Maxim biplane, showing the landing wheels and fenders. The shock is resisted by pneumatic springs. tail is supported upon a pair of light wheels mounted on castors that are interconnected with the rudder mechanism, so that the machine can be steered upon terra firma at low speeds, when the rudder itself would have but a feeble effect. Immediately beneath the lower deck of the main-planes is an inclined board serving as the support to the petrol- tank, and a protection to the central pro peller. It has been so arranged as to afford some lifting effort. Strip Steel Ties. An important and interesting feature of the fiamework is the bracing of the various lattice- girder members by diagonal ties of strip
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