Commercial airplanes 4th

Commercial airline

A commercial airliner, usually large, used totransport passengers and their luggage. These aircraft are operated by airlines. A aerolineador is typically defined as a plane to carry multiple passengers or cargo in commercial service.

In the history of aviation a few industries havedominated the market: the American Boeing, McDonnell Douglas (now acquired by Boeing) and Lockheed Corporation, now part of Lockheed-Martin, which is no longer engaged in civil aviation; the Tupolev and Sukhoi, the Russian-Ukrainian Antonov, European multinational Airbus and BrasileñaEmbraer Russian. Other industries known are de Havilland Canada (now part of Bombardier) and Fokker (declared bankrupt in 1996), all specialized in building Turbofan aircraft.

Models

Commercial aircraft are born in the early years afterthe Second World War, when all aquatic expertise in the arms race can be applied to the construction of aircraft used to transport people. The first air at all in developing a passenger service was an AEG J.II the February 5 ensured a daily flight between Berlin and Weimar. Since then, the commercial aviation develops and promotes the construction of commercial aircraft ever faster.

Engines

Until the beginning of the jet age, piston engineswere common in propliners as the Douglas DC-3. Almost all modern aircraft are powered by turbine engines, either turbofans or turboprops. Gas turbine engines operate efficiently at much higher altitudes, are more reliable than piston engines and produce less vibration and noise.

Board configuration

The seating arrangement, the distance between rows orpitch and type of classes is a decision of the airline operating the aircraft. In general, airlines Iberia mantrendrán flag as a distribution in 2 or 3 classes depending on the route, airlines such as easyJet or Ryanair prefer the economy of a plane with a single class

It normally has threetypes of seat: first business class and economy class, high-density tourist; the difference is due to the placement of seats onboard the space available for the legs and the type of service offered on board