Because since the dawn of man from the first humans to our population now, man has looked up at the sky in wonder dreaming of flight. Does that answer your question?
I would consider the first military aircraft as the Fokker Eindekker. It was invented in 1914
The steamboat was invented about a hundred years before the aircraft.
The Wright Brothers
The first aircraft successfully flown was in 1903, it was invented years before that.
1903. This was the first successful, powered, piloted flight in history.
Frank Whittle invented the Jet Aircraft.
The British ship HMS Hermes was the first ship designed and built as an aircraft carrier. She was commissioned in 1924. The Japanese ship Hosho was the first converted aircraft carrier in 1922.
Clyde Vernon Cessna built his first aircraft in 1911.
The joystick was invented in the first decade of the twentieth century. Its original use was as one of the controls of an aircraft.
If we are talking about aircraft lift, it was likely discovered, not invented. You can discover Gold, you don't invent it...
Yes, the engines first used for cars were used in the first aircraft
There are many different Cessna aircraft. Small personal aircraft, trainers, business jets and now passenger jets. The first was invented in 1911 by Clyde Cessna