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Consolidated PB4Y-2 Privateer
The Consolidated PB4Y-2 Privateer is a World War II and Korean War era patrol bomber of the United States Navy derived from the Consolidated B-24 Liberator. The Navy had been using unmodified B-24s as the PB4Y-1 Liberator, and the type was considered very successful. A fully navalized design was desired, and Consolidated developed a dedicated long-range patrol bomber in 1943, designated PB4Y-2 Privateer.〔Baugher, Joe. ("Convair PB4Y-2 Privateer." ) ''American Military Aircraft,'' 23 August 1999. Retrieved: 13 November 2010.〕 In 1951, the series was redesignated P4Y-2 Privateer. A further change occurred in October 1962 when remaining Navy Privateers (all having previously been converted to drone configuration as P4Y-2K) were redesignated QP-4B.
==Design and development==
The Privateer was externally similar to the Liberator, but the fuselage was longer to accommodate a flight engineer's station, and had a tall single vertical stabilizer rather than the B-24's twin tail configuration. The defensive armament was also increased to 12 .50-in (12.7 mm) M2 Browning machine guns in six turrets (two dorsal, two waist, nose and tail), with the B-24's belly turret being omitted. Turbosuperchargers were not fitted to the engines since maritime patrol missions were not usually flown at high altitude.
The Ford Motor Company (which produced B-24s for the United States Army Air Forces) had earlier built an experimental variant (B-24K) using the single tail of a Douglas B-23 Dragon.〔Baugher, Joe. ("Consolidated B-24N Liberator." ) ''American Military Aircraft.'' Retrieved: 13 November 2010.〕 Aircraft handling was improved, and the Air Corps' proposed B-24N production model was to be built by Ford, but the order was canceled on 31 May 1945 and the B-24N never entered production. The Navy's desire for substantial redesigns, however, had sustained interest in the new tail assembly.
The Navy eventually took delivery of 739 Privateers, the majority after the end of the war, although several squadrons saw service in the Pacific theater in the reconnaissance, search and rescue, electronic countermeasures, communication relay, and anti-shipping roles (the latter with the "Bat" radar-guided bomb.)
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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