Philippe Legendre

Title: Innovations of Philippe Legendre in Rotary-Wing Aircraft Technology

Introduction

Philippe Legendre is a notable inventor based in Grans, France. He has made significant contributions to the field of rotary-wing aircraft technology. His innovative designs focus on enhancing the performance and safety of aircraft systems.

Latest Patents

Philippe Legendre holds a patent for a "Dual piston drag damper for rotary-wing aircraft rotor." This invention features a body that defines two variable volume chambers linked by a piston. The chambers are filled with fluid and connected by a restriction port and a channel of larger cross-section than the restriction port. A secondary piston, which is slidable and pressure-tight, is fitted in the channel and loaded by an elastic bias. The design allows the secondary piston to resonate at the rotor's rotation frequency, effectively filtering dynamic stresses applied to the damper. At the natural drag frequency of the corresponding blade, the elastic bias blocks the secondary piston, allowing fluid flow between the chambers mainly via the calibrated restriction port, which provides substantial damping.

Career Highlights

Philippe Legendre is associated with Eurocopter, a leading company in the aerospace industry. His work there has focused on developing advanced technologies for rotary-wing aircraft. His innovative approach has contributed to improving the efficiency and reliability of aircraft systems.

Collaborations

Philippe has collaborated with Elio Zoppitelli, working together on various projects within the aerospace sector. Their partnership has fostered advancements in aircraft technology.

Conclusion

Philippe Legendre's contributions to rotary-wing aircraft technology through his innovative patent demonstrate his expertise and commitment to enhancing aviation safety and performance. His work continues to influence the aerospace industry positively.