Propulsive Efficiency of Ridge/Inlet Configuration
Controlling and directing the boundary layer on the surfaces of a flight vehicle are two of the most demanding challenges in advanced aerodynamic designs. The design of highly integrated and submerged inlets with a large offset between the entrance and compressor face is particularly challenging because of the need for controlling or reducing the adverse effects of the boundary layer on propulsive efficiency. S-duct diffusers are used widely in flight vehicles when the compressor face needs to be hidden, and their performance is generally sensitive to the quality of ingested boundary layer from the fuselage. Passive or active flow control mechanisms are needed to prevent flow separations at the bends. In this paper, a new method is presented for optimal inlet/body integration based on a pair of ridges ahead of the inlet and its effects on the performance of a semicircular S-duct inlet integrated on a flat surface using CFD. In this design, the ridge changes an inefficient inlet concept to one with acceptable performance. The new method of integration is practicable for top-mounted inlet configurations where the use of diverters and other mechanisms results in higher amounts of drag, weight, and complexity.
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Supplemental Notes:
- © 2018 Guoping Huang et al.
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Authors:
- Huang, Guoping
- Saheby, Eiman B
- Hays, Anthony
- Publication Date: 2018
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: 17p
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Serial:
- International Journal of Aerospace Engineering
- Volume: 2018
- Issue Number: Content ID 7462024
- Publisher: Hindawi Publishing Corporation
- Serial URL: http://www.hindawi.com/journals/ijae
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Publication flags:
Open Access (libre)
Subject/Index Terms
- TRT Terms: Aerodynamics; Boundary layer; Boundary layer flow; Drones; Fluid dynamics; Propulsion
- Subject Areas: Aviation; Vehicles and Equipment;
Filing Info
- Accession Number: 01681001
- Record Type: Publication
- Files: TRIS
- Created Date: Sep 20 2018 4:34PM