Jan 23, 2026 · helicopter, 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. …

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.

<p>The overarching concept of this eBook is to provide students with a broad-based introduction to the aerospace field, emphasizing technical content while making the material accessible and digestible. …

One thing that has characterized the helicopter since its invention in the 1930s has been the absurdity of the machine. The contraption simply looks unable to deliver on its promise, which is to fly up and …

Oct 23, 2025 · Since practical flights began in the 1930s, helicopters have split into clear categories: light trainers and patrol craft, medium EMS and police models, and heavy platforms for troop and …

Jan 11, 2023 · 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 …

Airbus delivers the most efficient helicopters to customers who serve, protect, save lives and carry passengers in demanding environments.

Jun 18, 2024 · A detailed examination of how a helicopter works, using a well known make and model, demonstrated with physics and mechanical 3D visuals. ...more

4 days ago · A helicopter crashed Thursday afternoon and ended up in a river at Meramec State Park, officials tell FOX 2.