3 天之前 · No survivors are expected after the midair collision between a plane and a military helicopter last night in the Washington, DC, area, Fire and EMS Chief John A. Donnelly said Thursday. Follow our ...

3 天之前 · What we know after American Eagle plane and Black Hawk helicopter collide near Washington, D.C. Sixty passengers and four crew members from the plane and three Black Hawk helicopter personnel were ...

3 天之前 · An American Airlines plane with 64 people on board collided with an Army helicopter over Washington, D.C., and crashed into the Potomac River.

An airplane (North American English) or aeroplane (British English), informally plane, is a fixed-wing aircraft that is propelled forward by thrust from a jet engine, propeller, or rocket engine. [1] Airplanes come in a variety of sizes, shapes, and wing configurations.

2025年1月22日 · The essential components of an airplane are a wing system to sustain it in flight, tail surfaces to stabilize the wings, movable surfaces to control the attitude of the plane in flight, and a power plant to provide the thrust necessary to push the vehicle through the air.

2025年1月14日 · Parts of a Plane. The body of the plane is called the fuselage. It is generally a long tube shape. The wheels of a plane are called the landing gear. There are two main wheels on either side of the plane fuselage. Then there is one more wheel near the front of the plane. The brakes for the wheels are like the brakes for cars.

2025年1月22日 · Variable geometry (swing) wings can vary the sweep (i.e., the angle of a wing with respect to the plane perpendicular to the longitudinal axis of the craft) of their wings in flight.

2022年10月4日 · The wings generate most of the lift to hold the plane in the air. To generate lift, the airplane must be pushed through the air. The air resists the motion in the form of aerodynamic drag.

It is easy to take the physics of flight for granted, as well as the ways in which we exploit them to achieve flight. We often glimpse a plane in the sky with no greater understanding of the principles involved than a caveman.

An airplane, also known as an aeroplane or just plane, is a fixed-wing aircraft. It moves by thrust from a jet engine , propeller , or rocket engine . Airplanes come in many shapes and sizes.