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Aviation History
1944
1944 - 0862.PDF
FLIGHT Studies in Recognition Aircraft in F| THE largest twin-engined flying boat, the Boeing Sea Ranger, is designed for extended cruises away from its base and provides living accommodation, for a crew of ten. It is powered by a pair of 2,000 h.p. Wright 18-cylinder Duplex Cyclones, and is reputed to have a top speed of about 250 m.p.h. It is well provided with defensive armament mounted in power-operated nose, dorsal and tail turrets and in gun blisters on each side. At least two torpedoes in addition to a useful bomb-load can be carried. The most striking feature of the Sea Ranger from the recogni tion point of view is its extremely high aspect-ratio wing, which has a wide, flat rectangular centre-section, outer panels taper ing on the leading edge onJy, and raked tips. Engines are set close to the deep hull, which is sharply up-swept at the stern to the large single tail unit. Approximate dimensions: Span, 140ft.; length, 86ft.; height, 31ft.; wing area, 1,610 sq. ft. Boeing Sea Ranger Patrol Bomber. Consolidated Coronado PB2Y-5 and PB2Y-3 NAVAL version of a civil flying boat, the Consolidated Coronado (PB2Y-3) is fitted with four 1,200 h.p. Pratt and Whitney Twin Wasp engines and has a top speed of some 220 m.p.h. and a cruising range of the order of 4,000 miles. Gun turrets are provided at nose, dorsal and tail positions, the dorsal fitting being a streamlined "teardrop" type. Guns can also be used from the waist. A fair number of Coronados have been modified into transports for the U.S. Navy. Like the Catalina, the Coronado has stabilising floats which form the square tips of the wings when retracted, while its twin fins and rudders are flat-sided ovals similar to those of the Liberator. The high wing has a back-swept leading edgft, straight trailing edge, and slight dihedral from a wide flat centre-section. Almost rectangular tailplane has pronounced dihedral. Dimensions: Span, 115ft.; length, 79ft. 3m.; height, 25ft. 4m.; wing area, 1,780 sq. ft.
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