Northrop XP-56 Black Bullet
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Vultee XP-54
Republic XP-69
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McDonnell XP-67
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Lycoming XR-7755
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List of aircraft of World War II
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Curtiss-Wright XP-55 Ascender
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Hyper engine
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Lycoming Engines
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1943 in aviation
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List of fighter aircraft
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List of aircraft of the United States during World War II
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Northrop P-61 Black Widow
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Bell XP-52
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