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Aviation History
1934
1934 - 0480.PDF
FLIGHT, MAY 17, 1934 COUPE DEUTSCH Eight entries for the Deutsch de la Meurthe Cup, comprising seven French and one English plane, have passed their qualifying tests within the required period, April 6th—May jth, and . are now receiving finishing touches for the Contest itself, which takes place on May 27th next •'"Tir^HE qualifying trials included a flight of 500 km. Ill (310.7 miles) to be flown at a minimum speed of JIL 250 km/h. (155.3 m.p.h.). The planes, in addi- tion, were required to take off within a distance of 550 metres (602 yards) and to clear two cords stretched across the field at a height of one metre, one cord being placed at the end of 550 metres and the other 50 metres farther on. The machines were also required to fly over these two cords on landing and come to a stop within 550 metres of the second cord passed over. These per- formances were to be accomplished with a wind of less than 6 metres per second (13.4 m.p.h.) prevailing. The Contest this year promises to be a particularly in- teresting one, and some new speed records for light planes are expected to be established. Several new planes have been built, together with engines specially designed for this race. These engines will be supercharged and will drive variable pitch propellers automatically adjustable in flight. A number of planes will be equipped with split flaps, and in most cases with retractable landing gears. Entry and Racing No. Caudron, C.450 Caudron, C.460, 6 . .Caudron, C.460, 7 .. Caudron, C.460, 10Potez, 1 Potez, 2 .: Regnier Co. Cau- dron Plane.Comper Aircraft Co. Tvpe " Streak,"12. Engine h.p. and r.p.m. Renault, 310 h.p. approx. 3,000 r.p.m. approx. t iPotez, 315 h.p. approx. .. Potez, 340-360 h.p. ap- prox. Regnier, 217 h.p " Gipsv Major " Special, 146 h.p., 2,400 r.p.m. A.irscrpw Ratier, V.P. Levasseur ..Ratier, V.P. Fairey Landing gear. Fixed Retractable i M The Caudron Planes The four Caudron low-wing, single-seater monoplanes, type C.450 and C.460, have been especially designed and built for this race. The wings are fitted with split flaps. The tailplane is adjustable in flight and can be operated with, or independent of, the wing flaps. These planes are equipped with the new Renault 6-cyl., in-line, inverted, aircooled, supercharged direct-drive engine of approxi- mately 310 h.p. They have a maximum cylinder displace- ment of 7,95 litres. Ratier two-bladed, variable-pitch pro- pellers, automatically adjustable in flight, will be used. The fuselage has rectangular sections, with a semi- elliptical bottom and a semi-circular top surface. It is equipped with fuel tanks having jettison valves, and the pilot's seat is fitted with a sliding windshield. The engine mounting is attached to the fuselage with four bolts. On the type 450, the undercarriage is a fixed one, of the FOR THE DEUTSCH CUP : The 6-cyl. supercharged Renault engine. cantilever, split-axle type, with independent wheels, 420 X 150, which are fitted with " spats." Charles shock absorbers are used. On the type 460, the undercarriage is retractable. It is also fitted with independent wheels, 420 X 15, and is equipped with Messier oleo-pneumatic shock absorbers. The retracting mechanism consists of automatic jacks, Charles type. The undercarriage is automatically locked in place when once raised in position. The controls are of the semi-rigid type mounted on ball bearings, and are statically balanced. The wings, tail and fuselage are constructed of spruce and birch plywood, and covered with fabric. Electrically welded steel tubes and a high-tensile light alloy are em- ployed in the construction of the engine mounting. The engine cowling and fuel tanks are made of magnesium. Special dopes are used. The general characteristics of the Caudron types C.450 and C.460 are as follows:—Wing span, 6,75 m. (22 ft. 2 in.) ; length, 7,125 m. (23 ft. 4 in.) ; height, 1,8 m. (5 ft. 11 in.) ; wing area, 7 sq. m. (75.35 sq. ft.) ; weight, empty, 520 kg. (146 lb.) ; useful load, 355 kg. (73 lb.) ; total weight, 875 kg. (1,919 lb.). The New Renault Engine The new Renault 6-cyl. in-line, inverted, air-cooled, supercharged, direct-drive engine which equips the Caudron planes has been designed to produce the maxi- mum h.p. with a cylinder displacement of 8 litres, and thus to come within the Deutsch Cup regulations. The general characteristics are as follows:—Bore, 109,75 m/m.; TESTED BY DELMOTTE : The Caudron C.450, with 310-h.p. Renault engine. 480
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