Helicopter - Wikipedia
A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally.
Helicopter | Facts, History, & Types | Britannica
3 天之前 · What is a helicopter? A helicopter is an aircraft with one or more power-driven horizontal propellers or rotors that enable it to take off and land vertically, to move in any direction, or to remain stationary in the air. Who designed the first helicopter capable of crewed free flight?
Northwest Helicopters – Leaders in Helicopter Aviation Since 1978
A leader in the aviation industry, Northwest Helicopters provides parts, service and component overhauls, in addition to other offerings. Located in Olympia, WA on 15 acres, we have 18 helipads and fixed wing access.
Bell | Welcome to The Future of Flight
We are pioneers who have challenged what's possible for sound barriers, lunar missions, tiltrotor systems and commercial helicopters—and today we're redefining where vertical flight can take us.
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Helicopters Northwest offers premier flight instruction, sightseeing tours, full maintenance, and aerial photography services.
List of United States military helicopters - Wikipedia
This is a list of United States military helicopters. First helicopter tested by the USAAF. [1] World's first large-scale mass-produced helicopter and the first helicopter used by the United States Army Air Forces. [2] Prototype. Program canceled 1946. Bell 47 variant. Prototype. Program canceled 1949. The « Army Mule ».
24 Types of Helicopters Explained (With Photos) - Lemon Bin …
2021年6月27日 · Since the early days of the invention of the helicopter, it has progressed to the point that it has become an indispensable vehicle in our modern society. The helicopter has revolutionized aircraft and brought versatility to what aircraft can be used for.
21 Types of Helicopters Explained (A Full Guide) - The Engineering …
In fact, there are six different types of helicopters, each with a unique rotor design and set of features that make them suitable for very specific applications.
helicopter summary | Britannica
helicopter, Aircraft with one or more power-driven horizontal rotors that enable it to take off and land vertically, move in any direction, or remain stationary in the air.
Helicopters - National Air and Space Museum
A helicopter is an aircraft that is lifted and propelled by one or more powered rotating wings called rotors. This allows them to operate from small landing sites. This episode of STEM in 30 explores helicopters: their design, how they work, and the functions they play in our society.