The Wright Brothers created the first airplane in 1900. The first glider in 1900 was like a kite, and it soared during windy days. In 1902, they upgraded their glider to have a wingspan of 9.2 m, instead of the 5m wingspan in 1900, in order to catch more air. As their ideas developed, they obtained a steam engine and made a propeller to go with the engine, in order to gain enough energy to liftoff unsupported. In 1904, they built the Flyer 2, their first plane to use a steam engine.