In order to commemorate Ada Augusta's significant impact on modern computer and software engineering, the US Department of Defense named the high-level programming language, which has spent a lot of money and has been successfully developed over nearly 20 years, as the Ada language. It is recognized as the fourth language. The main representative of the modern computer language.
It only took 66 years for humans to fly from the ground to the moon+ View more
It only took 66 years for humans to fly from the ground to the moon
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发布日期:2017-05-24 13:54
They produced the first aircraft "Aviator" 1 that relied on its own power for manned flight in 1903. This aircraft had a wingspan of 13.2 meters, the elevator in the front, the rudder in the back, and two two-bladed propellers. Driven by a chain, the landing gear is skid-type, equipped with a 70 kg four-cylinder engine with a power of 8.8 kilowatts. This famous aircraft in aviation history is now displayed in the Washington Air and Space Museum.
In 1904, the Wright brothers built a second "Aviator" equipped with a new engine, and conducted a test flight on the Hoffman Prairie near Dayton. The longest continuous flight time exceeded 5 minutes, and the flight distance reached 4.4 thousand. Meters; in 1905, a third "flyer" was tested, piloted by Wilbur, and it lasted 38 minutes and flew 38.6 kilometers.
From December 14th to 17th, 1903, "Aviator" 1 conducted its fourth test flight, which was located on a sand dune in Kitty Hawk, Kitty Hawk, North Carolina, USA. The first test flight was piloted by Orville Wright, which flew a total of 36 meters and was left blank for 12 seconds. The fourth time by Wilbur. Wright flew a total of 260 meters, leaving the space for 59 seconds. In 1906, their aircraft was granted a patent for invention in the United States.
The United States is the first country where mankind landed on the moon. The American moon landing plan is the Apollo Project, also known as the Apollo Project. It was a series of manned moon landing missions carried out by the United States from 1961 to 1972. The manned moon landing project, or "Apollo" project, organized and implemented by the United States from the 1960s to the early 1970s. It is an epoch-making achievement in the history of world spaceflight. The project began in May 1961 and ended successfully on the sixth lunar landing in December 1972. It took about 11 years and cost US$25.5 billion. At the peak of the project, 20,000 companies, more than 200 universities, and more than 80 scientific research institutions participated in the project, with a total of more than 300,000 people.




