Aerospace is the product of human expanding the atmosphere and space. After more than 100 years of rapid development, aerospace has become one of the most active and influential fields of science and technology in the 21st century. The major achievements in this field not only mark the latest development of human civilization, but also represent the advanced level of a country's science and technology.

Aviation refers to the navigation activities of manned or unmanned aircraft in the earth's atmosphere. Aviation must have air medium and lift force to overcome the gravity of aircraft, and most aircraft must have the power required to generate relative motion to air. Every achievement of aviation technology is inseparable from the progress of aerodynamics.

Military aviation generally refers to all aviation activities used for military purposes, mainly including operations, reconnaissance, transportation, vigilance, training, liaison and life-saving. In modern high-tech war, seizing air control is not only an important means to win the war, but also the main activity of military aviation. Military aviation voice is mainly completed by military aircraft, which can be divided into combat aircraft and combat support aircraft. Typical combat aircraft include fighter (also known as fighter), attack aircraft (also known as fighter), fighter bomber, anti submarine aircraft, tactical and strategic bomber, etc. Combat support aircraft include military transport aircraft, early warning command aircraft, electronic warfare aircraft, air refueling aircraft, reconnaissance aircraft, communication aircraft and military training aircraft. In addition to fixed wing aircraft, helicopters also play a great role in ground attack, reconnaissance, transportation, communication, search and rescue and anti submarine. They have become important weapons and equipment for the modern army, especially the army.