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Aviation History
1934
1934 - 1245.PDF
NOVEMBER 22, 1934. pears somewhat large, although, in these days of new ideas on fuselage shape, a large fuselage does not necessarily denote a low performance. The engine, a Gnome-Rhone of 600 h.p., is of course, fully cowled, and the top speed was given as 363 km.p.h. (225 m.p.h.). In general the machine is an all-metal fabric-covered parasol monoplane with a widely spread undercarriage having the compression legs led up to outrigger points which serve as anchorages for the wing struts. Two Polish fighters, the P.Z.L. 11C. and 24, are beautiful examples of modern aircraft construction ; both have been described in our pages. The 24 is merely the latest form of the 11C. The high wing is gull-like in that the roots droop to the fuselage, allowing the pilot a view over them and forming, to a cer- tain extent, a " valley " which accommo- dates two machine guns. Because the machine is a parasol monoplane, the fuselage is unencumbered by lower wing roots, and thus the pilot has an almost unrestricted outlook in all directions. Both the fuselage and the wing are completely built up of light allov as re- gards the structure and the covering. In addition to the two machine guns already mentioned, two large-calibre canons are mounted in the wings at the points where the wing struts meet the under surface, and the fairing around them merely serves the dual purpose of streamlining the strut ends and the guns. The 24 is probably the fastest machine, apart from the record-breaking Macchi seaplane, in the Salon ; its top speed, with the Gnome- Rhone K.14, is 416 km.p.h. (257 m.p.h.). A Fast Fighter Thfi Letov S.23T, although a biplaneof more conventional form, is also very fast, as, with the Gnome-Rhone"Mistral Major" of 880 h.p., the top speed is 405 km.p.h. (251 m.p.h.). Thearmament consists of two pairs of large- calibre machine guns in each bottomwing outside the airscrew disc. The general construction is of weldedsteel tubes, and, on the whole, the machine appears both solid andstrong. Each undercarriage wheel is carried on a single strut which is bracedto the fuselage by three wires. These legs take the compression by an ouf-wards movement against a shock-absorb- ing unit inside the fuselage. The wingbracing is by N-struts at the tips and streamline wires on the front spar only. Another fighter at the Salon for whicha speed of 405 km.p.h. (251 m.p.h.) is claimed is the A via 534. This machineis a normal biplane with a water-cooled Hispano Ybrs engine and a "tummy"radiator. Dual streamline wire bracing is used for the single bay. The under-carriage is neat, consisting as it does of a single fully cantilever strut whichmerges into the spats over the wheels in a very clean manner. Of composite construction, the frontpart of the fuselage has a covering of duralumin and aluminium over rivetedand bolted steel tubes, while the rear part has a fabric covering over rivetedand/or welded steel tubes. The wings are also of steel with fabric covering.The climb to 5,000 m. (16,400 ft.) takes 4 min. 24 sec. Britain's sole fighter exhibit with anair-cooled engine is the Armstrong FLIGHT. i?47 A British corner: the Hawker "Fury" is on the left, and the Bristol143, interesting for its new form of construction, on the right. *•'- The Mureaux 180 C2., an all-metal two-seater fighter with an unusual cockpit arrangement. The Hispano Xcrs engine has a nose radiator, ..Stainless steel construction : a Hawker •• Nimrod " wing.
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