Company Filing History:
Years Active: 1977
Title: Roy Duncan Allan - Innovator in Variable Cycle Gas Turbine Engines
Introduction
Roy Duncan Allan is a notable inventor based in Cincinnati, OH (US). He has made significant contributions to the field of gas turbine technology, particularly with his innovative designs aimed at improving engine performance.
Latest Patents
Allan holds a patent for a variable cycle gas turbine engine. This invention presents a design technique, method, and apparatus for varying the bypass ratio and modulating the flow of a gas turbine engine of the bypass type. The goal is to achieve improved mixed mission performance. The preferred embodiments of this invention include a gas flow control system that manages core and bypass stream pressure. This system comprises diverter valve means downstream of the core engine to selectively mix or separate the core and bypass exhaust streams. Additionally, the flow control system may feature variable geometry means to maintain the engine inlet airflow at a matched design level across all flight velocities. The invention allows for conversion from a high specific thrust mixed flow cycle at supersonic velocities to a lower specific thrust separated flow turbofan system at subsonic velocities, ensuring high flow variability in each operational mode. The techniques and methods disclosed in this patent lead to significantly reduced inlet and after-body drag levels, resulting in improved installed fuel consumption for mixed mission aircraft.
Career Highlights
Roy Duncan Allan is associated with the United States of America as represented by the Administrator of the. His work has been pivotal in advancing gas turbine technology, showcasing his expertise and innovative thinking in the field.
Collaborations
Allan has collaborated with notable coworkers such as James Edward Johnson and Tom Foster, contributing to the development of advanced technologies in gas turbine engines.
Conclusion
Roy Duncan Allan's contributions to variable cycle gas turbine engines highlight his innovative spirit and dedication to improving aircraft performance. His patent reflects a significant advancement in gas turbine technology, showcasing the potential for enhanced efficiency and performance in aviation.