Eric Charles Le Letty

Title: Eric Charles Le Letty: Turbojet Combustion and Flameholder Innovations

Introduction

Eric Charles Le Letty is an inventor associated with Saint Michel sur Orge, France. His work includes inventions addressing flameholder cooling and combustion stability in turbojet engines. He is associated with Société Nationale d’Étude et de Construction de Moteurs d’Aviation and holds 2 patents.

Latest Patents

Optimally Cooled, Carbureted Flameholder. This invention describes a flameholder for a bypass turbojet engine, designed to extend into the primary airflow. Its V-shaped body has two outer plates and an air tube positioned between them. The tube’s approximately triangular cross-section includes a curved downstream wall forming a trough for fuel conduits. Orifices direct air toward the plates and fuel conduits to cool these components, while a nozzle injector directs fuel downstream toward the afterburner chamber.

Method of Preventing Instabilities Produced by Combustion in a Turbojet. This method aims to prevent combustion-related vibrations in a multi-flow turbojet engine with an afterburner. It involves experimentally identifying vibration zones under different engine operating conditions and afterburner settings, then selecting fuel-richness control points for each flow to avoid those zones.

Career Highlights

Le Letty’s listed patents focus on practical challenges in afterburning turbojet engines. One addresses component cooling within a carbureted flameholder, while the other describes a method for reducing combustion-induced instability through operating-point selection.

Collaborations

His listed coworkers include Michel A. Desaulty and Frederic Bruno Beule. His company affiliation is Société Nationale d’Étude et de Construction de Moteurs d’Aviation.

Conclusion

Eric Charles Le Letty’s patent work centers on improving turbojet afterburner performance through flameholder cooling and methods for avoiding combustion-related vibrations.