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Aviation History
1909
1909 - 0738.PDF
NOVEMBER 20, 1909. VUITTON-HUBER. Helicopter with tandem lifting screws arranged to rotate in opposite directions. A third screw arranged as a propeller is in- tended to provide means for translation through space when the machine has once been raised from the ground. This latter pro- - consists of two main bevel wheels in opposition and in mesa with a set of three planet pinions mounted in a stationary cage. The pilot sits immediately in front of the vertical propeller-shaft, and the engine, not shown on the model exhibited, is placed beneath. At the pilot's left hand is a lever for work- ing a progressive clutch which combines a reduction gear—of the epicyclic type—of such ratio that the speed of the vertical shaft is reduced to 50x3 r.p.m. In front of VU1TTON - HUBER Vuittori'Huber Helicopter at Paris Flight Show. peller is of small diameter* but is driven at high speed, for the bevel-pinion on its shaft is one of those belonging to the reversing mechanism employed in the drive of the main screws. Provision is made for throwing the small propeller in and out of action at will by means of a jaw-clutch. The reversing gear, by means of whiah the lower lifting' screw rotates in an opposite direction to the upper, the pilot's seat is a fixed vertical triangular plane forming a prow to give steering-way, and behind the machine is a rudder. The frame is built in pyramid form, mostly of bamboo, which is bound throughout with tape. Elsewhere hollow wood members are used. The engine, when fitted, is to be of 120-h.p. ; the machine weighs in its present state 169 kilogs. The lifting screws are 5 metres in diameter, and rotate at 500 r.p.m. The pitch is not given. The small propeller is I"7 metres in diameter. HANRIOT. Monoplane, principally interesting on account of the design of the chassis, which is well illustrated in the accompanying photograph. The oonstruction has the appearance of being both light and strong ; short at the engine bearers, which lie longitudinally in the~;main frame of the machine. Transversely between the two runners two steel tubes are arranged and on one of these are mounted the two independently suspended wheels which normally lift the front ends of the runners some 8 ins _ off the ground. The suspension", Hanriot Monoplanj at Paris Flight Show. it certainly gives evidence ot more desire to avoid complication than do many systems of bracing. It will be noticed from the illustration that four wood columns rise obliquely from the two runners which HAMRIOT Tail Elevator form the base of the structure. One pair of these struts converge to a point well above the centre of the body, and from this apex, wires radiate for the support of the wings. The other pair of struts stop which is not properly shown in the photograph, consists of elastic springs connecting the wheel brackets to the frame. As usual in monoplane construction, the engine is right in front, and drives a tractor screw. There is a tail at the rear, comprising Front View an elevator and a rudder, in addition 10 fixed vertical and horizontal planes. Provision is made for warping the wings, but in its present condition this system of control is not fitted to the machine. 740
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