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
2024年12月10日 · 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.
Helicopters - Airbus
Airbus helicopters are an essential tool for first responders, firefighters, public service operators and military customers flying critical missions across the globe.
How Helicopters Work - HowStuffWorks
2022年4月20日 · A helicopter's main rotor is the most important part of the vehicle. It provides the lift that allows the helicopter to fly, as well as the control that allows the helicopter to move laterally, make turns and change altitude. To handle all of these tasks, the rotor must first be incredibly strong.
21 Types of Helicopters Explained (A Full Guide) - The Engineering …
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, hover, and fly forward, backward, and laterally.
What Is a Helicopter? (Grades 5-8) - NASA
2014年5月21日 · 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.
A Guide to the Different Types of Helicopters (Civilian, Military ...
2023年9月14日 · Let’s take a look at some of the most popular types of helicopters, what they are used for, as well as some popular models. Civilian helicopters are smaller, lighter, and less sophisticated than their military counterparts. If we look at the data, we can see that there are 38,536 civil helicopters worldwide compared to 31,192 military helicopters.
Helicopter - Simple English Wikipedia, the free encyclopedia
A helicopter (also often used: chopper or heli) is a kind of flying machine or aircraft. A helicopter lifts up off of the ground and moves because of its rotors . A rotor is several small wings, called rotor blades, that spin together around a shaft.
What Is a Helicopter? (Grades K-4) - NASA
2014年5月21日 · A helicopter is a type of aircraft. It uses rotating, or spinning, wings called blades to fly. Rotating blades, or a rotor, let helicopters do things airplanes cannot.
A Guide to L.A. Area Helicopters - Blogger
2019年9月1日 · “What’s that helicopter overhead?” Here’s a guide to most of the helicopters you’ll see flying around Glendale and northeast Los Angeles.