Stability and control of a model double ramp hypersonic intake

The flow dynamics of an inlet-isolator model scramjet with a steep double ramp intake is investigated at hypersonic flow conditions. With a deflection angle of 30-deg for the leading ramp, a variety of aft ramp parameters (deflection angle and ramp length) are analyzed at various free stream flow parameters. Then passive and active flow control strategies are tested for enhancing the range of operational mach numbers.