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Aviation History
1934
1934 - 0469.PDF
FLIGHT. MAY 10, 1934 *r THE MUREAUX 170 C.I A French single-seater fighter with a top speed of 336 m.p.h. at 15,580 ft. A LTHOUGH it has not yet been ordered in quantities •^ for re-equipment purposes, as the prototype was completed too late for participation in the recent competi- tion for single-seater fighters, the Mureaux 170 C.I, con- structed by Les Ateliers de Constructions du Nord de la France, of Paris and Les Mureaux, is generally recognised as one of the finest fighters which have appeared in France during the past two or three years. It was one of the exhibits on the Mureaux Stand at the Paris Aero Show in November, 1932, when it attracted much favourable com- ment. It is claimed that the machine is the fastest French Service aircraft. This we can believe, although our Hawker " Super Fury " is probably about 15 m.p.h. faster. The new Mureaux is a pretty aircraft, especially in plan form, as may be gathered from the G.A. drawings. The strut braced wings, which are of a type known on the Continent as " aile d'insecte," are unusual in more than one respect. Their maximum chord and thickness occur slightly outboard of the strut attachment, and the roots are merged into fairings behind the cylinder banks of theVee type engine. In this latter respect the machine is similar to the Gloster racing biplanes of some years back.Two duralumin spars of I section are employed for the wing structure. Rigidly controlled unbalanced aileronsare fitted. An all-metal fuselage is used, covered with duraluminsheeting. In section the fuselage is flat-sided with ellipti- cal top and bottom. A Hispano Suiza 12 Xbrs gearedand supercharged engine developing 690 h.p., driving a Ratier airscrew, is carried on a duralumin tube mounting.A radiator with adjustable shutters is mounted beneath the fuslage between the radius rods of the undercarriage.Originally the Hispano Suiza " X " type was designed as a water-cooled engine, but Prestone or ethylene glycolcooling is being employed in some of the later models, when radiator size is reduced and performance correspond-ingly increased. A fuel tank with a capacity of 315 litres is carried within the fuselage behind the fireproof bulkhead. Armament consists of two fixed machine guns mountedwithin the wings outside the periphery of the airscrew, in which position no synchronising gear is needed. Thisarrangement clears the pilot's cockpit of the breeches of the guns and the C.C. reservoir. An unusually good viewis obtained from the cockpit, mainly as the result of the use of the gull-type wings. MUREAUX 170 C.I Hispano Suiza 12 Xbrs Engine DIMENSION? Span .. .. . LengthHeight Wing area Weight empty Weight loaded WE PERFO Speed at 6,550 ft. (2 000 m)Speed at 11,480 ft. (3 500 m\ Speed at 15,580 ft. (4 750 m)Speed at 21,300 ft. (6 500 m) Speed at 26,200 ft. (8 000 m)Climb to 6,550 ft. (2 000 m) Climb to 11,480 ft. (3 500 m)Climb to 15,580 ft. (4 750 m) Climb to 21,300 ft. (6 500 m)Climb to 26,200 ft. (8 000 m) 1GI1TS EMANC . 37 ft. 4 in. (11,4 m) . 25 ft. 6 in. (7,8 m). 9 ft. 4 in. (2,86 m) . 210-4 sq. ft. (19,56 mZ) . 2,531-3 lb. (1 14S kg) . 3,580-9 lb. (1 624 kg) E . 205-5 m.p.h. (334 kmihr). 222-5 m.p.h. (358 kmjhr) . 236 m.p.h. (380 km/hr). 231 m.p.h. (372 kmlhr) . 217-5 m.p.h. (350 km/hr). 2 ruin. 36 sec. 4 min. 20 sec.. 6 min. 9 min. 5 sec.12 min. 45 sec. RETRACTABLE UNDERCARRIAGES Experiments in U.S.A. with Service Biplanes A MERICA has taken some bold steps in the fitting of•** retractable undercarriages to biplanes. We published in our issue of January 4, 1934, a view of the Curtiss" Raven," in which the wheels fold up inwards. Here we show two American military biplanes, a Grumman anda Curtiss, both with retractable undercarriages. The Grumman Aircraft Corporation, of New York, hasdone a large amount of work towards perfecting retractable undercarriages. In 1931 it designed for the U.S. Navyan amphibian landing gear, consisting of a central float and wheels, so mounted that they were housed, whenretracted, in recesses in the floats. Deck arresting gear was fitted. CLEANED UP : (Left) The Grumman FF-1 two-seater fighter with retractable undercarriage and Wright " Cyclone F " engine, and (right) an experimental Curtiss " Goshawk " (F-llC) fighter, with a similar type of undercarriage, also fitted with a " Cyclone." 469
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