Marc A Declercq

Title: The Innovative Contributions of Marc A Declercq

Introduction

Marc A Declercq is a notable inventor based in Pelissanne, France. He has made significant contributions to the field of aerospace engineering, particularly in the design and functionality of rotary-wing aircraft. With a total of 3 patents to his name, Declercq's work showcases his innovative spirit and technical expertise.

Latest Patents

One of Declercq's latest patents is for a multi-blade propeller. This variable-pitch, multi-blade propeller is specially designed for use as a rear rotor of a rotary-wing aircraft. The propeller features a number of pairs of blades emanating from a central hub, with each pair comprising a single elongate strip secured at its center to the hub. The strip is composed of two flat bundles of fibers and defines an aperture for a sliding shaft at their center. This shaft is utilized to control the pitch angles of the blades, while aerodynamic blade shells are secured to the fiber bundles using adhesive synthetic cellular or foam material.

Another significant invention by Declercq is a resonator device for damping the vibrations of a rotor in a rotary-wing aircraft. This device includes an annular weight that is disposed concentrically around the rotor axis. The weight is supported by at least three resiliently deformable elements, such as helical springs, which are radially biased in directions distributed regularly around the rotor axis. The inner ends of the springs bear directly on a part extending the rotor shaft axially, while their outer ends bear directly on the annular weight. This design allows the springs to apply statically balanced centrifugal thrusts to the annular weight, effectively damping vibrations without substantial bending.

Career Highlights

Throughout his career, Marc A Declercq has worked with prominent companies in the aerospace sector, including Société Nationale Industrielle Aerospatiale and Société Nationale Industrielle Et Aerospatiale. His experience in these organizations has contributed to his development as an inventor and innovator in the field.

Collaborations

Declercq has collaborated with notable individuals in the industry, including Rene L Mouille and Gerard C Genoux. These collaborations have likely enriched his work and contributed to the advancements in rotary-wing aircraft technology.

Conclusion

Marc A Declercq's innovative contributions to aerospace engineering, particularly in the design of rotary-wing