OrbitalDriverさんのイラストまとめ
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Last Qing Dynasty supporter in Virginia
フォロー数：848 フォロワー数：1207
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Convair F2Y Sea Dart, a single prototype was built. To date it is the only seaplane to exceed the speed of sound.
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McDonell XV-1 compound gyroplane. Two were built but it never entered production.
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