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Aviation History
1917
1917 - 0318.PDF
are two pairs of interplane struts, of streamline steel tube, on each side of the body. The attachment of these struts to the spars is effected by means of a metal fitting, secured to the spar by two bolts, on which is formed a fork receiving the end of the strut, a bolt passing through both. The struts can thus hinge sideways so that top and bottom planes can, when the bracing wires are slackened, lie one on top of the other for transporting. A smaller fork formed on the side of the fitting serves as an anchorage for the bracing cable, while the incidence bracing cable is attached to a metal clip which passes over a ring contained within the strut fitting. The internal bracing cables are fastened to a long, narrow, wiring plate bolted to the side of the spar. A wood or fibre packing piece is inserted between the spar and the strut fitting to give the latter the correct angle necessitated by the staggering of the planes. A quick-release device, similar to that employed on the L.V-G. machines, is provided for the bracing cables, enabling the latter to be withdrawn without upsetting the adjustment. One of the accompanying sketches shows the method of attachment of the lower plane to the fuselage, and is, we think, self-explanatory. Suffice it to say that the lugs on the ends of the tubular cross members passing through the fuselage, in con- tinuation of the wing spars, receive the forked ends of the latter, the locking being effected by means of the pin shown. A tongue formed on each of the aforesaid lugs serves as an anchorage for the lift wires. The top planes are attached to a cabane, with which is incorporated a service petrol tank having the same APRIL 5, 1917. It will be seen that the tail surfaces follow Morane-' Saulnier practice very closely, the elevators being exactly similar in plan-form. The rudder, however, is larger and of a peculiar pointed shape. They are constructed entirely of steel tubing, as Ihown injone " Flight " Copyright. The tail-skid of the 1916 Halberstadt biplane. of our sketches. The ribs are built up of lengths of tubing, the ends of which are brazed to the tubular spar—or rudder post, as the case may be—and the tubular trailing and leading edges. Short tubular distance pieces are arranged zig-zag fashion between the upper and lower members of the elevator ribs. The rudder post is supported by two substantial tie- rods of streamline steel tubing, anchored to the fuselage. The wood tail skid is supported by a tubulai steel tripod, and is allowed a certain amount oi swivel movement. The forward end is held b] elastic shock absorbers, whilst the rear end, whicl comes in contact with the ground, is fitted with i metal shoe. A control of the Fokker type is fitted, consistnij "Flight" Copyright Sketch showing metal construc- tion of the eleva- tors and rudder of the 1916 Hal- berstadt biplane. section as that of the wings. A portion of the latter is, of course cut away to receive this tank. The ailerons, which are mounted on the top plane only, are operated by a crank lever working in a slot formed in the wing, as in the Albatros machines. The pulleys carrying the aileron control cables are inside the wing, but an aluminium trap door allows for their inspection and adjustment. As is common practice with most German machines, the trailing edge of the aileron is given a slight up-turn. of a vertical column with hand grip, mounted on rocking shaft lying fore and aft and supported betwee two tubular cross members. The vertical column pivoted so as to rock backwards and forwards (elevat< control) over a quadrant, the purpose of the latt being, apparently, to lock the column in position order that the pilot may have his hands free for firii
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