Russell H Thomas

Title: Innovations of Russell H Thomas

Introduction

Russell H Thomas is a notable inventor based in Blacksburg, VA (US). He has made significant contributions to the field of noise control technology, particularly in the aviation sector. With a total of 3 patents, his work focuses on innovative solutions to reduce acoustic noise in turbofan engines.

Latest Patents

One of his latest patents is titled "Acousto-fluidic driver for active control of turbofan engine noise." This invention aims to reduce or cancel 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. The design allows for either a single-stage amplifier or multiple stages connected in parallel and/or cascade, optimizing the cancellation effect based on the noise source and its spatial distribution.

Another significant patent is "Active control of aircraft engine inlet noise using compact sound." This system utilizes a compact sound source to effectively reduce aircraft engine duct noise. It employs an adaptive filtered-x LMS algorithm to control the fan noise from a turbofan engine. The system features single multi-channel control systems to manage the fan blade passage frequency tone and its harmonics, as well as a multi-channel control system for spinning modes. The compact sound source consists of an array of thin, cylindrically curved panels designed to be flush mounted inside the engine inlet duct, maximizing the response to excitation.

Career Highlights

Russell H Thomas has worked with Virginia Tech Intellectual Properties, Inc. and Virginia Polytechnic Institute and State University. His experience in these institutions has contributed to his innovative research and development in noise control technologies.

Collaborations

Some of his notable coworkers include Ricardo A Burdisso and Chris R Fuller. Their collaboration has likely enhanced the research and development efforts in the field of active noise control.

Conclusion

Russell H Thomas is a distinguished inventor whose work in noise control technology has the potential to significantly impact the aviation industry. His innovative patents demonstrate a commitment to advancing solutions for reducing acoustic noise in turbofan engines.