The helicopter

In 1877, Enrico Forlanini developed an unmanned helicopter powered by a steam engine. It rose to a height of 13 meters, where it remained for some 20 seconds, after a vertical take-off from a park in Milan. That exuded a lot of good engeenering.
Paul Cornu's helicopter, built in 1907, was the first flying machine to have risen from the ground using rotating wings instead of fixed wings.

The first time a manned helicopter is known to have risen off the ground was in 1907 at Cornu, France. The first successful rotorcraft, wasn't a true helicopter, but an autogyro invented by Spanish engineer Juan de la Cierva in 1919. These kind of rotorcrafts were culled to use until the development of modern helicopters, when, for some reason, they became largely neglected, although the idea has since been resurrected several times. Since the first practical helicopter was the Focke Achgelis Fw 61, the autogyros golden age only lasted around 20 years.

First take off from a ship

1910
Eugene Ely pilots a Curtiss biplane on the first flight to take off from a ship. In November he departs from the deck of a cruiser anchored in Hampton Roads, Virginia, and lands onshore. In January 1911 he takes off from shore and lands on a ship anchored off the coast of California. Hooks attached to the plane's landing gear, a primitive version of the system of arresting gear and safety barriers used on modern aircraft carriers.

First passenger airplane

The Douglas DC-3 was one of the first passenger airplanes and it was developed in 1935 and brought into service in 1936. It was the only aircraft large enough to make passenger service profitable. The DC-3 had a seating capacity of 21 passengers when it was first developed. This resulted in an increase in the number of people booking air passage, bringing a new appetite to the general population for flying.
The DC-3 was large for 1936, with a wingspan of 29.1 meters, and powered with two 1,200-horse power Pratt & Whitney R-1830 Double Wasp engines.

The airplane in worldwar 1

The first world war (1914-1918) was the first time that airplanes were used in war. That was a good advantage because in the air they could see were the enemy was and could according to this act. A good idea was to moorage a machine gun in the back of the airplane and the second passenger was supposed to fire. Also the airplanes had a little hole in the bottom of the airplane where the second passenger was supposed to throw bombs on the enemy.