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Dr. Donald B. Hanson

  • B.S. Physics, University of Delaware, 1962.
  • M.S. Physics, University of Pennsylvania, 1964.
  • M.S. Mechanical Engineering, University of Connecticut, 1969.
  • Ph.D. Applied Mechanics, University of Connecticut, 1973.

Work history (at United Technologies Corporation)

  • 1995-99, Pratt & Whitney Technical Fellow - Acoustics.
  • 1992-95, Acoustics Group at Pratt & Whitney.
  • 1970-92, Acoustics Group at Hamilton Standard.
  • 1964-70, Instrumentation Group at Hamilton Standard.

Work post-United Technologies

  • 1999-2000, Contract Research for FTS.
  • 2001, Appointment to OAI Aeroacoustics Research Consortium.


  • 1973, ASME Gas Turbine Power Award.
  • 1983, United Technologies Board of Directors Award.
  • 1988, United Technologies George Mead Award.
  • 1995, AIAA Aeroacoustics Award.

Five patents on noise suppression means for turbomachinery

Throughout his career at United Technologies, Dr. Hanson developed analytical models for the generation of aerodynamic noise by rotating machinery ranging from spacecraft and submarine ventilating fans to helicopter rotors, turboprops, and turbofans. Special focus was on noise sources and determining the resulting harmonic and random noise spectra. Dr. Hanson has been credited with discovering and modeling many phenomena important for testing, predicting, and reducing noise of propulsion systems. Recognition for this work includes the top engineering award from United Technologies (the George Mead Award) and the top international award for Aeroacoustics (the AIAA Aeroacoustics Award).

Since retiring from Pratt & Whitney as Technical Fellow, Dr. Hanson has continued his aeroacoustic modeling via contract research. In 1999 and 2000, he developed a model for fan broadband noise generation in a coupled blade row environment. Reflection and transmission of both the rotor and stator are included, as are frequency and mode scattering. NASA published his earlier work on the effects of lean and sweep of fan stators on broadband noise in May 2001.


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