Air-intake is an important hardware in the propulsion unit of aircrafts and missiles. The free-stream supersonic flow has to be slowed down such the pressure recovery is maximum and flow distortion is minimal. Flow through an intake involves, both, external and internal flows. We have developed expertise to study such flows along with the effect of bleed for boundary-layer control. Efforts are on to study the phenomenon of buzz that appears in sub-critical operation of the intake. Figure 6 shows the flow in an intake operating very close to critical conditions. DRDL, Hyderabad has shown interest in this activity.
 
 

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