Introduction of U2 reconnaissance plane?

U-2 was developed by Lockheed Martin Company and made its first flight 1955. The US Air Force and CIA are used to spy on strategic targets behind enemy lines, and now they can be used as tactical reconnaissance planes. For decades, he traveled all over the world, scouted the Soviet Union, Cuba, North Korea, China, Viet Nam and other countries, but more than a dozen planes were shot down in enemy airspace. The U-2 reconnaissance plane nicknamed "Black Widow" is a high-altitude spy reconnaissance plane developed by Martin Company. It made its first test flight on August 4th, 1. 0955, and produced a total of 55 aircraft. It was one of the important sources of information in the United States during the Cold War. U-2, flying at an altitude of 25,000 meters, is equipped with a special reconnaissance camera, and takes the ballistic missile configuration of the Eastern Group such as the Soviet Union as the main confidential information photography. The prototype of the plane is F- 104. In order to make it have extraordinary height and not be shot down, it has huge wings. Due to the technological progress of fighter planes and surface-to-air missiles, high-altitude reconnaissance is very dangerous. 1960 was shot down for the first time over Sverdlov, the Soviet Union, and the US Air Force stopped using it in 1970. However, with the development of electronic/optical sensors (the load capacity is about 1.36 tons), reconnaissance satellites can collect information directly from the geostationary satellite orbit. The improved SR-7 1 of U-2 is used for reconnaissance in the Gulf and Bosnia. The improved ER-2 of U-2 was used as a NASA research machine for atmospheric measurement. The U-2 aircraft adopts normal aerodynamic layout, the wing is a single wing with high aspect ratio, and the power unit is J57 (thrust 48.9 kN) or J75-P-B engine. When flying, the altitude is more than 25,000m in the stratosphere, which is more than twice that of ordinary aircraft. In order to prevent the reflected sunlight from being painted black, and to enlarge the wing to make it have the characteristics of a glider, there are auxiliary circular sliders at both ends of the wing when taking off. When landing, the wing end touches the ground first as a touchdown, and then assists the sliding movement. The maximum flight speed is only 18km/h, which is considered as the most difficult military aircraft to operate. In order to reduce the weight of the fuselage, the fuselage is all-metal thin skin structure, and the fuselage is very slender, which also leads to the obvious shortcomings of U-2. When the Soviet Red Army attacked with a surface-to-air missile on 1960, the missile exploded near the fuselage, and the air billow produced by the explosion caused the plane to crash. Before the crash, the fuselage was seriously damaged. Pilots wear special pressure suits. It is reported that the compression suit is for astronauts and has a life support device.

U-2, flying at an altitude of 25,000 meters, is equipped with a special reconnaissance camera, and the ballistic missile configuration of the Eastern Group such as the Soviet Union is the main confidential information shooting object. The prototype of the plane is F- 104. In order to make it have extraordinary height and not be shot down, it has huge wings.

Due to the technological progress of fighter planes and surface-to-air missiles, high-altitude reconnaissance is very dangerous. 1960 was shot down for the first time over Sverdlov, the Soviet Union, and the US Air Force stopped using it in 1970. However, with the development of electronic/optical sensors (the load capacity is about 1.36 tons), reconnaissance satellites can collect information directly from the geostationary satellite orbit. The improved SR-7 1 of U-2 is used for reconnaissance in the Gulf and Bosnia.

The improved ER-2 of U-2 was used as a NASA research machine for atmospheric measurement.