Tuesday, August 26, 2008


An aircraft is a medium which is able to fly throughout the Earth's atmosphere or through any other atmosphere. Most rocket vehicle is not aircraft because they are not support by the surrounding air. All the human action which environs aircraft is called aviation.

Manned aircraft are flying by a pilot. Until the 1960s, unmanned aircraft is called drones. During the 1960s, the U.S. military bring the term distantly piloted vehicle (RPV) into use. More lately the term unmanned aerial vehicle (UAV) has turn into common.

Tuesday, August 19, 2008


Aviation refers to actions involving man-made flying devices, counting the people, organizations, and dictatorial bodies concerned with them.

Many cultures have built devices that travel during the air, from the earliest projectiles such as stones and spears, to more complicated buoyant or aerodynamic strategy such as the mechanical pigeon of Archytas in Ancient Greece, the boomerang in Australia, the hot air Kongming lantern, and kites. There are early myths of human flight such as the story of Icarus, and later, more believable claims of short-distance human flights counting a kite flight by Yuan Huangtou in China, and the parachute flight and forbidden glider flight of Abbas Ibn Firnas.

The practicality of balloons was incomplete because they could only travel downwind. It was instantly recognized that a steerable, or dirigible, balloon was necessary. Jean-Pierre Blanchard flew the first human-powered dirigible in 1784 and cross the English Channel in one in 1785. Subsequent early dirigible development included machine-powered propulsion, rigid frames, and better speed and maneuverability.

Aircraft began to convey people and cargo as design grew larger and more reliable. In contrast to small non-rigid blimps, giant rigid airships become the first aircraft to transport passengers and cargo over great distance. The best known aircraft of this type were artificial by the German Zeppelin company.

Tuesday, August 12, 2008


Aeronautics is the science concerned with the study, design, and produce of flight-capable equipment, or the technique of in use aircraft. While the term accurately meaning "sailing the air" initially referred solely to the science of working the aircraft, it has since been extended to include technology, business and other aspect related to aircraft. One of the important parts in aeronautics is a branch of physical discipline called aerodynamics, which deal with the activity of air and the way that it interact with objects in movement, such as an aircraft. Aviation is a word sometimes used interchangeably with aeronautics, though "aeronautics" consists of lighter-than-air craft such as airships, while "aviation" does not.

Wednesday, August 06, 2008


A shuttlecock is a high-drag projectile used in the game of badminton. It has an open conical shape: the cone is shaped from sixteen overlapping goose feathers surrounded into a rounded cork base. The cork is covered with thin leather.

The shuttlecock's form makes it tremendously aerodynamically steady. Regardless of initial orientation, it will turn to fly cork first, and remain in the cork-first orientation.

The name shuttlecock is commonly shortened to shuttle; a shuttlecock may also be known as a bird or birdie. The abbreviation cock is rarely used except in a funny sense, due to its vulgar connotations. The "shuttle" part of the name was most likely derived from its back-and-forth movement during the game, similar to the shuttle of a loom; the "cock" part of the name was almost certainly derived from the likeness of the feathers to a bird's crest.