IMAGE: This is a principle test model (left) and an artist concept for future applications (right) of HIACs. Credit: ©Science China Press
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Hypersonic vehicles, which flight at Mach numbers lager than five (flight velocity more than 6000 km/h), will serve as a more convenient and efficient transport tool than present subsonic airplanes for long-distance journeys in future. Typically, it only takes a couple of hours from Beijing to New York. Recent interest in these vehicles has grown intensively, and various types of innovative designs have been proposed and studied.
Despite entering the age of hypersonic flight, there still exist many problems to resolve. How to design an advanced aerodynamic configuration is one of them. Prof. Kai Cui, Dr. Yao Xiao, Dr. Ying-Zhou Xu, and Dr. Guang-Li Li from State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences tried to tackle this problem in a long time. After more than seven years investigation, they first proposed a family of innovative configurations named “Hypersonic I-shaped Aerodynamic Configurations”. Their work was published as the cover article of SCIENCE CHINA Physics, Mechanics Astronomy (2018, 61(2), 024722).
In general, there are at least three objectives in designing an aerodynamic configuration, the high lift to drag ratio (L/D), the high volumetric efficiency and the high lift coefficient. Designers always take the high L/D during the cruise state
Article source: https://www.eurekalert.org/pub_releases/2018-01/scp-anf012318.php