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Aviation History
1949
1949 - 0847.PDF
552 FLIGHT MAY 12TH, 1949 Salon Studies Cockpit of the S.O.M2 research aircraft, showing the retractable windscreen, used for take-off and landing, in the stowed position. quantities of dirt and occasion appreciable duct losses. The swept-back wing has a single spar, and the fuselage, with a 2 mm skin, has no stringers. Structural design was undertaken with a view to large-scale production in shadow factories. The first prototype has been seen with a greater fin area than that of the show aircraft, and with a dorsal extension. A maker's specification includes the following figures: — Span, 34ft 9111; length, 49ft 3in; wing area, 271 sq ft; gross Business end of the S.0.6020 Espadon, showing the six gun-ports, with flash-eliminator slots, and the large cockpit enclosure.... and tricycle undercarriage. It first flew on April 1st this year, and is designed for fighting, bombing or attack duties from French aircraft carriers. Characteristics are: span, 35.8ft; length, 40ft; wing area, 280.5 s(l *t; gross weight,I 5A3° lb; estimated max. speed, 444 m.p.h.; range, 2,800 miles. A photograph shows large flap-guide fairings. S.O. 6000 Triton Jet Trainer.—The latest version of the S.O. 6000, the first example of which was on view in the previous Salon, is fitted with a Hispano-Suiza Nene 100, (Below) A prone piloting position under develop- ment by the Arsenal de I'Aeronautique. (Right) Ars 5.501 radio-directed research or target model, with impulse duct and rocket launching gear. weight, 17,637-18.298 lb; max. speed at sea level, 624 m.p.h.; max. speed at 33,000ft, 609 rn.p.h.; rate of climb at sea level, 5,900ft /min; rate of climb at 32,800ft, 1,570 ft/min; time to 33,000ft, 10 min; ceiling, 39,370ft; take-off speed with full load, 136 m.p.h.; take-off run, 2,790ft; landing speed, 118 m.p.h.; duration, i| hours. S.O. 4000 Jet Bomber.—The S.O. Mi and M2 research aircraft are providing data for construction of the S.O. 4000 twin-jet bomber which will closely resemble in layout these diminutive forerunners. In the extreme nose will be a flush-roofed, pressurized cockpit for a pilot and navigator. Lateral intakes will feed two Nenes, housed in the fuselage behind the tanks, and ejecting at the tail. Two remotely- controlled guns will be mounted in -each of two wing-tip barbettes. The under- carriage—unlike that of the S.O. M2— will be of tricycle type, with a steerable nose-wheel. Span, length and wing area are respectively 58.3ft, 64.6ft and 807 sq ft, and the designed all-up weight, 19,700 lb. S.O. 8000 Narval Carrier - borne Fighter.—Powered by an Arsenal 12HO2 piston engine (Jumo 213 type) with water methanol injection and driving a contra-rotating Chauviere pusher propeller, the Narval is of twin- boom layout, with high-set tailplane Spring-loaded plenum-chamber doorson the S.O.M2 (Rolls-Royce Derwent). with supplementary intakes on the fuselage sides. The two occupants have ejector seats. A maximum speed of 590 m.p.h. is claimed and the full-load take-ofT speed and landing speed are given as 130 m.p.h. and 112 m.p.h. The wing area is 161 sq ft and the all-up weight 10,050 lb, so that the wing loading (which might appear excessive, due to the relative sizes of wing and fuselage) is about G2 Ib/sq ft. S.O. .¥2 High-speed Research Air- craft.—This little swept-back monoplane is generally similar in design to the S.O. Mi air-launched research glider shown at the Salon in 1946 and is like- wise a means of acquiring data for the construction of the S.O. 4000 jet bomber. It is, in fact, a piloted, half- scale model of the bomber. The first flight (with a temporarily raised cock- pit roof) was made last month. A single Rolls-Royce Derwent 5 turbo- jet is fed by laterally disposed intakes, standing proud of the fuselage sides, but whereas the S.O. 4000 will have two outlets—one for each Nene—the M2 has a central efflux, flanked by two small outlets for turbine-cooling air. The main undercarriage embodies three tandem retractable wheels, stowed in the central fuselage, and a relatively large nose- wheel. Small jettisonable wheels are attached to the retractable wing-tip skids for take-off. Skin of 3 mm thick-
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