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Angle of Attack Investigations on the Performance of a Diverteress Supersonic Inlet
Author(s): Rasoul Askari, Mohammad Reza Soltani, Keivan Mostofi, Afshin Khajeh Fard, Mahdi Abedi
Keywords: Supersonic flow, Diverterless inlet, Bump, Angle of attack, Boundary layer control
An extensive experimental investigation to study the effects of angle of attack (AOA) on the performance of a body-integrated supersonic inlet has been carried out. The present inlet, known as Diverterless Supersonic Inlet (DSI), is utilized with a three-dimensional bump to provide both supersonic flow compression and boundary layer diversion. Experiments were conducted at the presence of a typical fore-body including an elliptical nose to further contemplate the effects of fore-body geometry on the approaching flow. All tests were conducted at a constant free stream Mach number, M_∞=1.65 zero degrees angle of sideslip (AOS), and at various angles of attack (AOA) ranging from -2 to 6 degrees. The results showed that the present DSI had acceptable performance characteristics for all ranges of AOA tested. It should be noted that the present DSI does not have any moving, adjustable or auxiliary mechanisms as such systems or mechanism are used to improve the performance of an inlet.