What is the connection between aviation and aerospace?

The launch and recovery of spacecraft must pass through the atmosphere, which creates an inevitable connection between aerospace and aerospace. In addition to rockets and missiles, some new aerospace vehicles are also difficult to distinguish simply by aerospace.

For example, reusable space shuttles, aerospace planes, etc., although operating on orbits outside the atmosphere, must fly like ordinary aircraft when entering and returning to space. Therefore, there is no need to make a strict distinction between them in these cases.

The term aerospace not only contains the science necessary to carry out aerospace activities, but also includes various technologies involved in the development of aerospace vehicles. From a scientific and technological perspective, aviation and aerospace are closely linked.

Aerospace technology is a highly comprehensive modern science and technology. Mechanics, thermodynamics and materials science are the scientific basis of aerospace; electronic technology, automatic control technology, computer technology, jet propulsion technology and manufacturing process technology have played an important role in the progress of aerospace; the development of medicine, vacuum technology and cryogenic technology has promoted the development of aerospace.

The above-mentioned science and technology intersect and penetrate each other in the application of aviation and aerospace, resulting in some new disciplines, making aviation and aerospace science and technology form a complete system. ?

Significance

The development of aviation has greatly changed the structure of transportation. Air transportation provides people with a fast, convenient, safe and comfortable means of travel. International flights have replaced ocean liners and become the main tool for people to travel across continents, which has deepened the connections and exchanges between countries around the world. Air transportation on domestic routes can already compete with railway transportation in developed countries and regions, and it has accelerated the development of remote areas in developing countries.

Communication satellites and large passenger aircraft are considered two important pillars of modern society. The application of aviation in industry and agriculture is also obvious. For example, light aircraft are widely used in aerial photography, geodetic mapping, geological exploration and resource surveys. They can also be used for sowing and fertilizing, weeding and insecticide, forest fire prevention and environmental monitoring. and protection etc.

The combination of aerospace technology and other science and technology has created many new business avenues and produced huge economic and social benefits. The most typical example is satellite communication, which has the characteristics of long distance, large capacity, good quality, high reliability and flexibility, and has become an important means of modern communication. In the early 1980s, communication satellites were responsible for more than half of international telecommunications services and almost all intercontinental television transmission services.

In China, communication satellites have enabled the project to connect radio and television to every village. People living in remote areas can hear radio and see television. In addition to military uses, satellite navigation technology is widely used in civilian fields such as ship navigation, ocean survey, offshore oil drilling, geodetic surveying and mapping, and search and rescue by taking advantage of its all-weather, global and high-precision advantages.

The high-precision weather forecast provided by meteorological satellites plays a very positive role in preventing natural disasters such as typhoons and heavy rains, and contributes to the healthy development of the national economy. Other geodesic and oceanographic satellites have become the fastest, most effective and most economical means of surveying the earth and ocean resources, and can also assist in monitoring natural disasters and environmental pollution.