How are planes built?

Answer 1

Building a plane is a large undertaking that can take years to complete. It starts off with ideas. These ideas are pitched to airlines so the manufacture can get an idea of what kind of plane its customers want. Furthermore, extensive market analysis is done to predict whether the considered plane will be marketable by time the first prototype is developed, flown, tested, and certified. Once the manufacturing is satisfied that the plane is marketable and sufficient interest is present by the airlines, then initial development begins. The final dimensions, look and feel of the plane are hashed out by the designers. Once a rough idea is born, scaled models are built so they can be tested and the final design finalized.

It might be hard to believe, but the earliest airlines built by Boeing and other manufacturers, including the Boeing 747 where designed, and draw by hand on hundreds and thousands of individual blue prints. The Boeing 777 was one of the first airliners to be built in computers with programs such as CAD (Computer Aided Design). You can now begin to imagine how many years it takes before a full scaled model can even be built and flown. For example, the Airbus A380 idea was brought up back in the 1980's and it wasn't till the early 1990's that the project began and it wasn't till recent years that the plane was finally delivered and entered service!

Today, thanks to the help of computers a plane can be built faster, more accurately, and design problems worked out before the plane is even built. CAD can even tell the designers what parts are weak and make recommendations on how to make the part stronger. Parts can even be tested for their strength and durability in CAD. Back in the day a part had to be made, then tested and sent back to the factory to be redesigned, which cost a lot of money.

Answer 2

they are made by people and by materials and lots more.