POWER PLANT: One Ranger V-770-8 air-cooled piston engine, rated at 550 hp, driving two-bladed propeller
PERFORMANCE: 198 mph
COMMENT: The Edo OSE was a 1940s American single-seat multi-role floatplane designed and manufactured by the Edo Aircraft Corporation. The Edo Aircraft Corporation was an established company that produced seaplane floats. In 1946, Edo designed its first aircraft, the Edo OSE. Two prototype aircraft designated XOSE-1 were built and flown in 1946. The XOSE-1 was a single-seat low-wing cantilever monoplane with a single float and fixed wingtip stabilizing floats. The wings could be folded for shipboard storage. The aircraft was designed for a variety of roles including observation and anti-submarine patrols. Unusually, it was designed to carry a rescue cell on the underwing hard points, which would be capable of carrying a single person when used for air-sea rescue. Eight production aircraft XOSE-1 were built to a United States Navy order but none were accepted into service. A two-seat training conversion was carried out as the XTE-1, but production TE-2 aircraft were cancelled (Ref.: 24).
POWER PLANT: Two Wright R-3350-8 Cyclone 18radial engines, rated at 2,300 hp each
PERFORMANCE: 247 mph at 13,600 ft
COMMENT: The Consolidated XP4Y-1 shore-based patrol, torpedo-bomber and minelayer flying boat, unofficially dubbed “Corregidor”, was a military version of the Consolidated “Model 31”. The prototype of the Model 31 was completed in 1939, and was intended for both civil and military roles. It was intensively modified during its prolonged period of testing, eventually emerging in April 1942 as the XP4Y-1. The rear fuselage was redesigned to provide for the installation of a tail turret, the modified fuselage raised the tail assembly considerably, and, subsequently, the bow of the hull was extensively redesigned, a form of cuff being added, the retractable stabilizing floats were redesigned, and dummy gun turrets were fitted. An order for 200 aircraft was placed and a special plant was established at New Orleans for quantity production of the P4Y-1. But Wright R-3350 Cyclone power plant employed by the flying boat were needed more urgently for the Boeing B-29 “Superfortress” and, in consequence, during summer of 1943 production contracts for the P4Y-1 were cancelled, the New Orleans plant subsequently building the PBY “Catalina” (Ref.: 14).
POWER PLANT: One Wright R-2600-20, rated at 1,900 hp
PERFORMANCE: 250 mph at 16,500 ft
COMMENT: During the closing stage of the hostilities in the Pacific area the Grumman Company resp. General Motors converted some TBF and TBM Avengers, respectively, into anti-submarine search and strike aircraft. The rear turret was removed and faired over and a large ventral radome, carrying a APS-20 radar, was mounted under the fuselage. By that the TBM-3 conversion as the first ship based airborne early warning control and relay platform. These search aircraft operated together with TBM-3S or TBM-3S-2 submarine-strike Avengers. These search-and-strike aircraft remained in operational service after the war until 1954. From 1950 onwards these Avengers were replaced by Grumman AF-2W “hunter” and Grumman AF-2S “killer” Guardians (Ref.:1)
POWER PLANT: Four Pratt &Whitney R-1830-92 Twin Wasp engines, rated at 1,200 hp each
PERFORMANCE: 213 mph at 20,000 ft
COMMENT: In June 1935 and July 1936, respectively, the US Navy ordered prototypes of large four-engine flying-boats in patrol bomber category from Sikorsky and Consolidated. The Consolidated design, Model 29, made use of retractable wingtip floats similar to those on the Consolidated PBY “Catalina”, but in all other respects it was a wholly new design with high-mounted wing and a capacious hull with accommodation for a crew of ten.
The XPB2Y-1, as designated by the Navy, took-off first time on December 1937, but orders for the big new aircraft was delayed until mid 1939. First six production PB2Y-2s were delivered December 31, 1940, after a production contract for 210 PB2Y-3s was placed a month before. These “Coronados”, as the type was named, often carried ASV radar in a fairing just behind the cockpit. Several aircraft were redesigned and became PB2Y-5 and PB2Y-5R depending on the engines used. All “Coronados” were withdrawn from active service before the end of 1945. (Ref. 22)
TYPE: Patrol and Long-range Anti-submarine Flying-boat
ACCOMMODATION: Crew of nine
POWER PLANT: Two Wright R-2600-12 “Cyclone 14” engines, rated at 1,200 h.p. each
PERFORMANCE: 198 m.p.h. at 13,000 ft
COMMENT: This long-range anti-submarine variant of the basic PBM-3 carried a AN/APS-15 radar in a large housing above and behind the cockpit. Up to 2,000 lb bombs or depth-charges could be carried. A total of 156 of this version were built.
POWER PLANT: Pratt & Whitney R.2800-48W Double Wasp, rated at 2,400 h.p.
PERFORMANCE: 317 m.p.h. at 16,000 ft
COMMENT: Originally designed as a replacement of the highly successful Grumman TBF Avenger anti-submarine search aircraft. In place of defensive armament the new torpedo-bomber had a Westinghouse 19XB turbojet in the tail to give it a high escape speed. Later the the design was revised and a large ventral radar set was built in. In that configuration the aircraft was used as a hunter in cooperation with the Grumman AF-2S as a killer. A total of 153 AF-2W were built.