James Lolnell Hadder

Title: James Lolnell Hadder: Innovator in Turbine Technology

Introduction

James Lolnell Hadder, an inventive mind based in Scottsdale, AZ, has made significant contributions to the field of turbine technology, holding a total of seven patents. His innovative approaches focus on enhancing efficiency and performance in turbine engines, showcasing his expertise and creativity as an inventor.

Latest Patents

Among Hadder's latest patents is the "Waffled Impingement Effusion Method." This innovation involves a combined impingement effusion method that incorporates brazing or welding a waffled impingement plate to the cold backside surface of a component with effusion holes. The design includes a plurality of small baffle cells that help relieve thermal stresses between the impingement plate and the component, thereby avoiding cooling flow leakage associated with floating plate seals.

Another notable patent is the "Compliant Mounting System for Turbine Shrouds." This method addresses the challenges of mounting low-expansion full ring shrouds in turbine engines by providing radial compliance to minimize the stresses caused by thermal growth differences. The system ensures there is no looseness in the mounting, which allows for improved tip clearances and better overall engine performance.

Career Highlights

James Lolnell Hadder has worked for reputable companies, including Honeywell International Inc. and AlliedSignal Inc. His tenure at these organizations reflects his dedication to advancing technology in the aerospace and turbine engine sectors.

Collaborations

Throughout his career, Hadder has collaborated with esteemed colleagues such as Adrian R. Allan and George E. Zurmehly. These partnerships have contributed to the success and development of his innovations, further establishing his reputation in the industry.

Conclusion

With seven patents to his name, James Lolnell Hadder continues to be a prominent figure in turbine technology innovation. His contributions, particularly in impingement effusion methods and mounting systems, demonstrate a commitment to enhancing turbine efficiency and performance. His work not only benefits the industry but also inspires future inventors in the field.