Company Filing History:
1 out of 5 
1 out of 785 
Years Active: 1997
Title: John B Niemczuk: Innovator in Acousto-Fluidic Technology
Introduction
John B Niemczuk is a notable inventor based in Kensington, MD (US). He has made significant contributions to the field of noise control technology, particularly in the aviation sector. His innovative approach to reducing turbofan engine noise has garnered attention in both academic and industrial circles.
Latest Patents
Niemczuk holds a patent for an "Acousto-fluidic driver for active control of turbofan engine noise." This invention focuses on the reduction or cancellation of acoustic noise by providing an amplified, oppositely phased version of the noise through an acousto-fluidic amplifier. The amplified acoustic output is delivered via an impedance matching horn, creating a destructive interference with the original noise. Depending on the noise source and its spatial distribution, the acousto-fluidic amplifier can be configured as a single-stage or multi-stage system, optimizing the cancellation effect. The system also allows for feedback or feedforward control of the amplified acoustic output signals.
Career Highlights
Throughout his career, Niemczuk has worked with various organizations, including Defense Research Technologies, Inc. and Virginia Tech Intellectual Properties, Inc. His work has been instrumental in advancing technologies that address noise pollution in aviation.
Collaborations
Niemczuk has collaborated with notable professionals in his field, including Tadeusz M Drzewiecki and Christopher R Fuller. These collaborations have further enriched his research and development efforts.
Conclusion
John B Niemczuk's innovative work in acousto-fluidic technology exemplifies the potential for engineering solutions to address complex challenges in noise control. His contributions continue to influence advancements in the aviation industry.