Matches in DBpedia 2015-10 for { ?s ?p "The McDonnell XHJH Whirlaway was a 1940s American experimental twin-rotor helicopter designed and built by McDonnell Aircraft for the United States Navy. It was the first successful twin-engined, twin rotor helicopter in the world. The Whirlaway was the largest helicopter flown up to that time."@en }
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- McDonnell_XHJH_Whirlaway abstract "The McDonnell XHJH Whirlaway was a 1940s American experimental twin-rotor helicopter designed and built by McDonnell Aircraft for the United States Navy. It was the first successful twin-engined, twin rotor helicopter in the world. The Whirlaway was the largest helicopter flown up to that time.".
- McDonnell_XHJH_Whirlaway comment "The McDonnell XHJH Whirlaway was a 1940s American experimental twin-rotor helicopter designed and built by McDonnell Aircraft for the United States Navy. It was the first successful twin-engined, twin rotor helicopter in the world. The Whirlaway was the largest helicopter flown up to that time.".