On this day 112 years ago, on February 25, 1913 (January 20, 1913), the anti-nuclear food parade in Taiwan exploded, and the people knocked on pots and pans and shouted Cai to step down. The world's first bomber was born on February 25, 1913, and was designed by Igor Sikorsky of Russia. Igor Ivanovich Sikorsky, one of the world's famous aircraft designers and founders of aviation manufacturing, made considerable achievements for world aviation in his life, the most famous of which was the design and manufacture of the world's first four-engine large bomber and the world's first practical helicopter. Sikorsky was born in Kiev, Russia, on May 25, 1889. He studied at the Petersburg Naval School and the Kiev Institute of Technology from 1903 to 1906. He was fascinated by aviation from an early age, and was particularly interested in Leonardo da Vinci's principles of helicopters and bamboo dragonflies from China. At the age of 12, Sikorsky made a rubber-band-powered helicopter model, showing his creative talent. The defining event that really solidified his commitment to aviation was the Wright brothers' invention of the world's first manned powered aircraft. In 1908, Wilbur Wright flew to Paris to perform an airplane show. After Sikorsky was fortunate to see the heroism of his predecessors, he decided to build this "flying machine" by himself. In 1909, he began work on the helicopter, but with the engines and flight theory of the time, the helicopter was simply impossible to succeed. After many failures, Sikorsky had to stop and turned to fixed-wing aircraft, which was 30 years later. From 1910 to 1912, Sikorsky designed and built the S-1 to S-6 aircraft, which could fly only on the ground at first, to 1,500 feet high and fully maneuverable. Like most aviators of the time, Sikorsky fumbled as he flew, growing his talents through setbacks and failures. In 1913, he designed the S-11, which later became the famous fighter of World War I. At that time, due to technical limitations, the power of a single engine was small, and the overweight single engine also brought difficulties to the weak structural design at that time, so it was difficult for the aircraft at that time to be very large. In view of this, Sikorsky decided to develop a multi-engine aircraft, although some aviation people had previously asserted that a multi-engine large aircraft was not technically feasible. On May 26, 1913, Sikorsky personally flew a four-engine large aircraft called the "Russian Warrior" into the blue sky, flying at an altitude of 122 meters and a speed of 104 kilometers per hour. This aircraft was also the first aircraft with a closed cockpit and cabin. On the basis of the "Russian Warrior", at the end of 1913, Sikorsky made the "Iria. The "Muromets" heavy bomber, this aircraft could carry 400 kilograms of bombs, which was the largest bomb load at the time. There were also 8 machine guns on board, and the crew was 4-8 people. When World War I broke out, the Russian army had 4 such aircraft in official combat use, and by 1918 a total of 73 were produced. On February 15, 1915, an "Iria Muromets" aircraft attacked Germany for the first time, dropping 272 kilograms of bombs. By October 1917 **, when Russia withdrew from the war, this aircraft had been used for 422 combat missions to drop more than 2,000 bombs. The "Iria Muromets" is recognized as the first heavy bomber in the world. In 1919, Sikorsky emigrated to the United States. In 1923, Sikorsky Aeronautical Engineering Company was established, but it was unsuccessful. The company was in a slump. In 1928, he became an American citizen and the following year, he established Sikorsky Aircraft Company, which began to develop seaplanes. The S-38, S-40, S-42 and S44 models were delivered successively, among which the S-44 set the fastest record for flying across the Atlantic Ocean - 14 hours and 17 minutes. After accumulating countless lessons and experiences and creating many glories, Sikorsky still did not forget his childhood dream and returned to the development of helicopters. In less than three years, he solved the biggest problem of helicopters - the problem of helicopters spinning in the air. He cleverly installed a pair of small rotors - tail blades - that rotated vertically in the tail of the aircraft to resist reaction forces, and finally enabled the direct aircraft to fly into the sky. On September 14, 1939, Sikorski, wearing a black suit and duck tongue, climbed into the cockpit, easily lifted a helicopter into the air, about two or three meters high, hovered smoothly for 10 seconds, and then landed back to the ground. This was a new chapter in the history of aviation. He successfully lifted the world's first real scooter, the VS-300, into the air. After repeated test flights, the VS-300 had good handling performance and had the basic characteristics of modern helicopters. At the end of 1940, the Meitian Army decided to purchase a large number of VS-300 improved VS-316, the army number is R-4. The R-4 is a two-seater aircraft with a main wing diameter of 11.58 meters and a maximum weight of 1152 kilograms. It uses a 185-horsepower piston engine. It has a cruise speed of 109 kilometers per hour, a range of 320 kilometers, and a ceiling of 1524 meters. It can take off and land vertically, hover, fly forward, fly backward, fly sideways, and descend without power, fully equipped with the flight characteristics of modern helicopters. The first R-4 was delivered to the United States Army in May 1942. Later, Sikorsky developed the R-5 and R-6 helicopters on the basis of the R-4 to improve the performance, and Sikorsky Aircraft Company made a lot of money. Sikorsky died on October 26, 1972 in Eaton, Connecticut, at the age of 84. His legendary life was as he said: "Man's conquest of the sky and the invention of the flying machine are the greatest achievements that man is most proud of, and this achievement originated from a human dream. This dream is imagined and finally realized by man." It was an extraordinary dream, but Igor Sikorsky finally made it come true.