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Aero/Aeroplane/Airplane:
A fixed-wing aircraft is a heavier-than-air craft where movement of the wings in relation to the aircraft is not used to generate lift. The term is used to distinguish from rotary-wing aircraft or ornithopters, where the movement of the wing surfaces relative to the aircraft generates lift. Fixed-wing aircraft are called airplanes in North America (the U.S. and Canada), and aeroplanes in Commonwealth countries and Ireland (excluding Canada). These terms are derived from Greek a??a? (aéras-) ("air") and -plane. The current British word is the older of the two terms, dating back to the mid-late 19th century.[verification needed] Fixed-wing aircraft may be manned or not; they may be large or tiny; every fixed-wing aircraft is open to being scale modeled by perhaps a smaller or larger mimic fixed wing aircraft. Many fixed-wing aircraft may be remotely controlled or robot controlled.

Overview:
Fixed-wing aircraft range from small training and recreational aircraft to large airliners and military cargo aircraft. The word also embraces aircraft with folding or removable wings that are intended to fold when on the ground. This is usually to ease storage or facilitate transport on, for example, a vehicle trailer or the powered lift connecting the hangar deck of an aircraft carrier to its flight deck. It also embraces "variable geometry" aircraft, such as the General Dynamics F-111, Grumman F-14 Tomcat and the Panavia Tornado, which can vary the sweep angle of their wings during flight. There are also rare examples of aircraft which can vary the angle of incidence of their wings in flight, such the F-8 Crusader, which are also considered to be "fixed-wing".

An F-16 Fighting Falcon, an American military fixed-wing aircraftThe two necessities for fixed-wing aircraft are air flow over the wings for lifting of the aircraft, and an area for landing. The majority of aircraft, however, also need an airport with the infrastructure to receive maintenance, restocking, refueling and for the loading and unloading of crew, cargo and passengers. Some aircraft are capable of take off and landing on ice, aircraft carriers, snow, and calm water.

The aircraft is the second fastest method of transport, after the rocket. Commercial jet aircraft can reach up to 900 km/h. Single-engined aircraft are capable of reaching 175 km/h or more at cruise speed. Supersonic aircraft (military, research and a few private aircraft) can reach speeds faster than sound. The speed record for a plane powered by an air-breathing engine is held by the experimental NASA X-43, which reached nearly ten times the speed of sound.

The biggest aircraft still in service is Antonov An-225, while the fastest still in production is the Mikoyan MiG-31. The biggest supersonic jet ever produced and still in service is the Tupolev-160.

Structure:
The structure of a fixed-wing aircraft consists of the following major parts:
1. A long narrow often cylindrical form, called a fuselage, usually with tapered or rounded ends to make its shape aerodynamically smooth. The fuselage carries the human flight crew if the aircraft is piloted, the passengers if the aircraft is a passenger aircraft, other cargo or payload, and engines and/or fuel if the aircraft is so equipped. The pilots operate the aircraft from a cockpit located at the front or top of the fuselage and equipped with windows, controls, and instruments. Passengers and cargo occupy the remaining available space in the fuselage. Some aircraft may have two fuselages, or additional pods or booms.
2. A wing (or wings in a multiplane) with an airfoil cross-section shape, used to generate aerodynamic lifting force to support the aircraft in flight by deflecting air downward as the aircraft moves forward. The wing halves are typically symmetrical about the plane of symmetry (for symmetrical aircraft). The wing also stabilize the aircraft about its roll axis and the ailerons control rotation about that axis. At least one control surface (or surfaces) mounted vertically usually above the rear of the fuselage, called a vertical stabilizer. The vertical stabilizer is used to stabilize the aircraft about its yaw axis (the axis in which the aircraft turns from side to side) and to control its rotation along that axis. Some aircraft have multiple vertical stabilizers.
3. At least one horizontal surface at the front or back of the fuselage used to stabilize the aircraft about its pitch axis (the axis around which the aircraft tilts upward or downward). The horizontal stabilizer (also known as tailplane) is usually mounted near the rear of the fuselage, or at the top of the vertical stabilizer, or sometimes a canard is mounted near the front of the fuselage for the same purpose.
4. On powered aircraft, one or more aircraft engines, are propulsion units that provide thrust to push the aircraft forward through the air. The engine is optional in the case of gliders that are not motor gliders. The most common propulsion units are propellers, powered by reciprocating or turbine engines, and jet engines, which provide thrust directly from the engine and usually also from a large fan mounted within the engine. When the number of engines is even, they are distributed symmetrically about the roll axis of the aircraft, which lies along the plane of symmetry (for symmetrical aircraft); when the number is odd, the odd engine is usually mounted along the centerline of the fuselage.
5. Landing gear, a set of wheels, skids, or floats that support the aircraft while it is on the surface.

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