An aircraft is a vehicle A vehicle is a mechanical means of conveyance, a carriage or transport. Most often they are manufactured (e.g. bicycles, cars, motorcycles, trains, ships, boats, and aircraft), although some other means of transport which are not made by humans also may be called vehicles; examples include icebergs and floating tree trunks which is able to fly Flight is the process by which an object moves either through the air, or movement beyond earth's atmosphere , by generating lift, propulsive thrust or aerostatically using buoyancy, or by simple ballistic movement by being supported by the air The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention , and reducing temperature extremes between day and night. Dry air contains roughly (by volume) 78% nitrogen, 21%, or in general, the atmosphere An atmosphere is a layer of gases that may surround a material body of sufficient mass, by the gravity of the body, and are retained for a longer duration if gravity is high and the atmosphere's temperature is low. Some planets consist mainly of various gases, but only their outer layer is their atmosphere (see gas giants) of a planet. An aircraft counters the force of gravity by using either static lift In physics of an accelerated frame of reference , defining a "downward" direction along the acceleration, buoyancy (pronounced /ˈbɔɪ.ənsi/) is the upward force, caused by fluid pressure, that keeps things afloat. The net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body. This force enables (as with balloons A balloon is an inflatable flexible bag filled with a type of gas, such as helium, hydrogen, nitrous oxide or air. Modern balloons can be made from materials such as rubber, latex, polychloroprene, or a nylon fabric, while some early balloons were sometimes made of dried animal bladders. Some balloons are purely decorative, while others are used, blimps A blimp, or non-rigid airship, is an airship without an internal supporting framework or keel. A non-rigid airship differs from a semi-rigid airship and a rigid airship in that it does not have any rigid structure, neither a complete framework nor a partial keel, to help the airbag maintain its shape. Rather, these aircraft rely on both a higher and dirigibles An airship or dirigible is a "lighter-than-air aircraft" that can be steered and propelled through the air using rudders and propellers or other thrust. Unlike other aerodynamic aircraft such as fixed-wing aircraft and helicopters, which produce lift by moving a wing, or airfoil, through the air, aerostatic aircraft, such as airships and) or by using the dynamic lift A fluid flowing past the surface of a body exerts a force on it. Lift is defined to be the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is defined to be the component of the fluid-dynamic force parallel to the flow direction of an airfoil An airfoil or aerofoil (in British English) is the shape of a wing or blade (of a propeller, rotor or turbine) or sail as seen in cross-section (as with vehicles that plane the air with wings A wing is a surface used to produce lift for flight through the air or another gaseous or fluid medium. The cross-sectional shape of a wing is referred to as an airfoil. The word originally referred only to the foremost limbs of birds, but has been extended to include the wings of insects , bats, pterosaurs, and aircraft in a straight manner, such as airplanes A fixed-wing aircraft, typically called an airplane, aeroplane or plane, is an aircraft capable of flight using forward motion that causes air to pass over its wings to generate lift. Planes include jet engine and propeller driven vehicles propelled forward by thrust, as well as unpowered aircraft . Fixed-wing aircraft are distinct from and gliders A glider or sailplane is a type of glider aircraft used in the sport of gliding. Some gliders, known as motor gliders are used for gliding and soaring as well, but have engines which can, in some cases, be used for take-off or for extending a flight. Foot-launched aircraft are described in separate articles, though their differences to sailplanes, or vehicles that generate lift with wings in a rotary manner A rotorcraft or rotary wing aircraft is a heavier-than-air flying machine that uses lift generated by wings, called rotor blades, that revolve around a mast. Several rotor blades mounted to a single mast are referred to as a rotor. The International Civil Aviation Organization defines a rotorcraft as "supported in flight by the reactions of, such as helicopters A helicopter is a type of rotorcraft in which lift and thrust are supplied by one or more engine driven rotors. In contrast with fixed-wing aircraft, this allows the helicopter to take off and land vertically, to hover, and to fly forwards, backwards and laterally. These attributes allow helicopters to be used in congested or isolated areas where or gyrocopters An autogyro, also known as gyroplane, gyrocopter, or rotaplane, is a type of rotorcraft which utilises an unpowered rotor in autorotation to develop lift, and an engine-powered propeller, similar to that of a fixed-wing aircraft, to provide thrust. While similar to a helicopter rotor in appearance, the autogyro's rotor must have air flowing up and).[1]
Although rockets A rocket or rocket vehicle is a missile, spacecraft, aircraft or other vehicle which obtains thrust by ejecting a jet of fast moving fluid exhaust from a rocket engine. Chemical rockets create their exhaust by the combustion of rocket propellant. The action of the exhaust against the inside of combustion chambers and expansion nozzles is able to and missiles A missile is a self-propelled projectile used as a weapon. Missiles are typically propelled by rockets or jet engines. Missiles generally have one or more explosive warheads, although other weapon types may also be used also travel through the atmosphere, most are not considered aircraft because they use rocket thrust instead of aerodynamics as the primary means of lift (A cruise missile A cruise missile is a guided missile that carries an explosive payload and uses a lifting wing and a propulsion system, usually a jet engine, to allow sustained flight; it is essentially a flying bomb. Cruise missiles are generally designed to carry a large conventional or nuclear warhead many hundreds of kilometers with high accuracy. Modern may be considered to be an aircraft because it relies on a lifting wing).
The human Humans are bipedal primates belonging to the species Homo sapiens in Hominidae, the great ape family. They are the only surviving members of the genus Homo. Humans have a highly developed brain, capable of abstract reasoning, language, introspection, and problem solving. This mental capability, combined with an erect body carriage that frees the activity which surrounds aircraft is called aviation Many cultures have built devices that travel through the air, from the earliest projectiles such as stones and spears., the boomerang in Australia, the hot air Kongming lantern, and kites. There are early legends of human flight such as the story of Icarus, and later, somewhat more credible claims of short-distance human flights appear, such as. Manned aircraft are flown by an onboard pilot An aviator is a person who flies aircraft for pleasure or as a profession. The first recorded use of the term was in 1887 as a variation of the French 'aviation', from the Latin 'avis', coined 1863 by G. de la Landelle in "Aviation ou Navigation Aérienne". The term aviatrix is sometimes used for a female aviator. Unmanned aerial vehicles An unmanned aerial vehicle (UAV; also known as a remotely piloted vehicle or RPV, or Unmanned Aircraft System ) is an aircraft that flies without a human crew on board the aircraft. Their largest uses are in military applications. To distinguish UAVs from missiles, a UAV is defined as a reusable, uncrewed vehicle capable of controlled, sustained, may be remotely controlled An unmanned aerial vehicle (UAV; also known as a remotely piloted vehicle or RPV, or Unmanned Aircraft System ) is an aircraft that flies without a human crew on board the aircraft. Their largest uses are in military applications. To distinguish UAVs from missiles, a UAV is defined as a reusable, uncrewed vehicle capable of controlled, sustained, or self-controlled by onboard computers. Target drones A target drone is an unmanned, remote controlled aerial vehicle, usually used in the training of anti-aircraft crews are an example of UAVs.
Contents |
MarketWatch (press release)
This brings the number of Air Force aircraft supported by AAI's ABE system to 10. These awards are valued at more than $1.5 million. ...
USMC Awards Textron Marine & Land Systems and Granite Tactical Vehicles Team ... MarketWatch (press release)
all 20 news articles »
Dustin Hurst
Mon, 22 Feb 2010 23:11:26 GM
Upon recommendation of House Majority Leader Mike Moyle, R-Star, and Minority Leader John Rusche, D-Lewiston, lawmakers in the House passed a plan to offer tax rebates for companies or individuals who have their large . aircraft. , ...
