• 1995 - present: 

The Boeing Company, Senior Engineer/Scientist (1995)
Principal Engineer/Scientist (1997)
Associate Technical Fellow (1998) 
Technical Fellow (20003) 
• 1990 - 1995: 

Department of Ocean Engineering, MIT, Senior Research Engineer 
• 1987 - 1990: 

St John's College, Cambridge UK, Research Fellow.

• 1983 - 1987: 

Ph.D, Department of Engineering, Cambridge University, UK 
• 1978 - 1983: B. Sc, Department of Engineering Mechanics, 

Qinhua University, China. 

  Aeroacoustics and flow noise modeling (e.g. landing gear wake, cavity flow)

  Acoustic detection by phased microphone array technology

  Acoustic loads

  Acoustically lined duct sound propagation (e.g. inlet and fan duct)

  Air vehicle acoustics (e.g. launch vehicles)

  Aircraft engine noise prediction and suppression

  Boundary layer flow noise

  Cavity noise prediction and suppression

  Computational aeroacoustics

  High lift system noise

  Inlet liner design

  Landing gear noise

  Propeller noise

  Rotor noise and its reduction

  Structural acoustics