New problems of aerodynamics

Abstract

Aerodynamics is a branch of mechanics, and is also one of the foundations of aero-space technology. Starting from 1930s, it gradually separate itself from the traditional fluid mechanics. With the development of aero-space technology, the development of aerodynamics is very fast. In many countries, especially in big countries, the manpower and material resources devoted to aerodynamics is the biggest among all branches of fluid mechanics and even among the whole field of mechanics. In fact, aerodynamics has already had its own comprehensive system of knowledge. But recently, the R&D of the technology for near space flying vehicles, which would fly at the height of 40-70 km with the speed of 5-20 times of sound speed, has draw more and more attention. The flight height, combined with the flight speed, is new to us. So people would ask, if there is relevant new and important area of aerodynamics needs to be explored, and what would be its key scientific problem. In this paper, we would try to answer this question.