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Advances in Aircraft and Spacecraft Science
  Volume 7, Number 5, September 2020, pages 441-458
DOI: http://dx.doi.org/10.12989/aas.2020.7.5.441
 


Optimal aerodynamic design of hypersonic inlets by using streamline-tracing techniques
Bing Xiong, Michele Ferlauto and Xiaoqiang Fan

 
Abstract
    Rectangular-to-Ellipse Shape Transition (REST) inlets are a class of inward turning inlets designed for hypersonic flight. The aerodynamic design of REST inlets involves very complex flows and shock-wave patterns. These inlets are used in highly integrated propulsive systems. Often the design of these inlets may require many geometrical constraints at different cross-section. In present work a design approach for hypersonic inward-turning inlets, adapted for REST inlets, is coupled with a multi-objective optimization procedure. The automated procedure iterates on the parametric representation and on the numerical solution of a base flow from which the REST inlet is generated by using streamline tracing and shape transition algorithms. The typical design problem of optimizing the total pressure recovery and mass flow capture of the inlet is solved by the proposed procedure. The accuracy of the optimal solutions found is discussed and the performances of the designed REST inlets are investigated by means of fully 3-D Euler and 3-D RANS analyses.
 
Key Words
    inward turning inlet; shape transition; aerodynamic optimization
 
Address
Bing Xiong and Xiaoqiang Fan: College of Aerospace Science and Engineering, National University of Defense Technology, 410073 Changsha,PRC

Michele Ferlauto: Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Torino Italy
 

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