Abstract
The design of an inward-turning, high-speed, 3D streamline traced intake is presented from osculating axisymmetric theory. To satisfy the osculating intake design criteria, a stitched Busemann diffuser and Internal Conical Flow-A (ICFA) solution is used as the basic isentropic compressive streamline. This new contour solution, dubbed Internal Conical Flow-C (ICFC), provides efficient compression, high flow uniformity, and straight leading edge shocks of equal strength. Additionally, a novel method for constructing the lower intake capture surface is presented. The combined process leads to a new method of high-speed intake design, labeled the Osculating Internal Waverider Intake with Parallel Streamlines (OIWPS). From this method, a generic shape-transitioned intake is constructed and named the IN-Intake for the Indiana universities that contributed to the project. Computational fluid dynamic (CFD) results are assessed to validate the design method for both the 2D parent flowfields and the full 3D design. These results were contrasted against flow properties from the OIWPS code. Finally, two blockage models were designed and fabricated for blockage testing in the Boeing-AFOSR Mach 6 Quiet Tunnel.
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