Experimental Study of the Effect of Bleed Location on Performance and Stability of an Axisymmetric Supersonic Mixed-Compression Inlet

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Daliri, Abbas | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 45188 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Soltani, Mohammad Reza
Abstract:
For supersonic inlets with reduction of mass flow ratio to a specified value self-induced oscillations know as Buzz would occure. Study and suppression of these oscillations are categorized in the field of inlet stability. In this work performance and stability of a supersonic inlet is studied experimentaly. Also a flow control mean is examined for stability and performance improvement. Investigation of the effect of bleed location as a key parameter for this flow control method is the main goal of this study. The model used is an axisymmetric mixed compression inlet. Experiments were done in 3 freestream Mach Numbers of 1.8, 2.0 and 2.2 with application of bleed and in no-bleed condition. For the investigation of bleed location effect 3 suction location are examined. Results show that suction location effects significantly on the improvement of stability and performance of the inlet and depends on different parameters such as freestream Mach number and inlet operating condition. Moreover it can be found that the effectiveness of a suction configuration depends on the location of terminal normal shock position
Keywords:
Supersonic Intake ; Buzz Phenomenon ; Boundary Layer Suction ; Inlet Bleed Duct

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