Helicopter - Wikipedia A Bell 206 helicopter operated by the Los Angeles Police Department Air Support Division Cabin view looking out from a helicopter in flight Bell 412CF looking forward from the tail, showing its twin turbine engine exhausts 1956 Hiller YROE-1 one-man "Rotorcycle" being tested at NASA Ames Research Center A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally
HELICOPTER中文 (简体)翻译：剑桥词典 - Cambridge Dictionary The helicopter made a drop of much-needed supplies to the stranded hikers The helicopter was hovering above the building I heard the noise of a helicopter hovering overhead The crew of the ship were winched to safety by a rescue helicopter The helicopter stirred up clouds of dust
Helicopters - Airbus Airbus delivers the most efficient helicopters to customers who serve, protect, save lives and carry passengers in demanding environments
Helicopter | Facts, History, Types | Britannica A helicopter is an aircraft with at least one horizontal propeller or rotor which enables the craft to take off and land vertically, move in any direction, and remain stationary in the air
21 Types of Helicopters Explained (A Full Guide) So if you’re a helicopter buff or just curious about helicopters, come along as we explore the seven types of helicopters and learn what separates them from the rest What is a helicopter? A helicopter is a type of rotorcraft in which lift and thrust are supplied horizontally by spinning rotors
What Is a Helicopter? (Grades 5-8) - NASA A helicopter is a type of aircraft that uses rotating, or spinning, wings called blades to fly Unlike an airplane or glider, a helicopter has wings that move
How Helicopters Work - HowStuffWorks Believe it or not, the marvel we know as the helicopter began as a Chinese top consisting of a shaft - a stick - adorned with feathers on one end
How does a helicopter work? - Explain that Stuff How does a helicopter stay in the air? The science of a helicopter is exactly the same as the science of an airplane: it works by generating lift—an upward-pushing force that overcomes its weight and sweeps it into the air Planes make lift with airfoils (wings that have a curved cross-section)