Location History:
- Corton Denham, EN (1978)
- Sherborne, GB (1984)
Company Filing History:
Years Active: 1978-1984
Title: Innovations of Frederick John Perry
Introduction
Frederick John Perry is a notable inventor based in Corton Denham, GB. He has made significant contributions to the field of aerospace engineering, particularly in helicopter rotor blade design. With a total of two patents to his name, Perry's work showcases his innovative approach to improving rotor performance.
Latest Patents
Perry's latest patents include a helicopter rotor blade that features a root end for attachment to a rotor head and a tip end that defines the farthest point from the root end. This design incorporates a central portion of aerofoil section that extends between the root and tip ends, defining a rotor radius. Notably, the outboard region of the central portion has a negative basic pitching moment coefficient of absolute value not less than 0.02, while the inboard region has a more positive pitching moment coefficient than that of the outboard region. Another patent involves helicopter rotor blades that include a rearwardly swept tip portion with a leading edge of aerofoil profile located forward of the leading edge of the central portion. This design blends with a sharp tip edge of higher sweep magnitude, extending rearwardly to the extreme tip of the blade. The rotor blade utilizes a stable vortex dominated flow field created over the tip portion, providing operational advantages for both retreating and advancing blades.
Career Highlights
Frederick John Perry has had a distinguished career at Westland Aircraft Limited, where he has been instrumental in advancing helicopter technology. His innovative designs have contributed to the efficiency and effectiveness of rotor systems in various aircraft.
Collaborations
Perry has collaborated with notable colleagues such as Martin Vincent Lowson and David Leonard Hawkings, further enhancing the innovative environment at Westland Aircraft Limited.
Conclusion
Frederick John Perry's contributions to helicopter rotor blade design exemplify his innovative spirit and dedication to aerospace engineering. His patents reflect a deep understanding of aerodynamics and a commitment to improving rotor performance.