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Boeing and Lockheed's Futuristic Helicopter Is Finally Airborne | The Motley Fool

Boeing and Lockheed's Futuristic Helicopter Is Finally Airborne | The Motley Fool

A dual-rotor concept to improve helicopter performance achieved first flight more than a year after originally planned. Will the design live up to its promise?

fool.com2019年3月26日

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US Military - US Airforce 🇺🇸 Plan For Futuristic Helicopter

US Military - US Airforce 🇺🇸 Plan For Futuristic Helicopter

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New Bell Helicopter’s Futuristic Helicopter Concept

New Bell Helicopter’s Futuristic Helicopter Concept

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Amazon Unveils Futuristic Helicopter-Plane Hybrid Drone for Deliveries

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Video shows moment of fatal helicopter collision

Video shows moment of fatal helicopter collision

Helicopter crashes into radio tower in Houston

Helicopter crashes into radio tower in Houston

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32 People Saved By Helicopter In North Carolina

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Dramatic UK helicopter rescue

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Helicopter Rescue - Ship in Distress

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