Location History:
- Fuwa-gun, JP (2013)
- Gifu, JP (2013 - 2015)
Company Filing History:
Years Active: 2013-2015
Title: Yasuyuki Shirai: Innovator in Aircraft Hydraulic Systems
Introduction
Yasuyuki Shirai is a prominent inventor based in Gifu, Japan. He has made significant contributions to the field of aircraft hydraulic systems, holding a total of 4 patents. His innovative designs focus on enhancing the efficiency and reliability of hydraulic systems used in aircraft.
Latest Patents
One of Shirai's latest patents is a hydraulic system for aircraft actuators. This invention features an electric motor that drives a variable capacity backup hydraulic pump. The pump supplies pressure oil to an actuator when there is a loss or reduction in the function of an aircraft's central hydraulic power source. The power source unit rectifies electric power supplied from a variable frequency supply. A driver then supplies this electric power to the motor, ensuring the pump rotates at a predetermined constant speed. This speed is optimized based on the efficiency changes of the pump, motor, and driver, maximizing overall efficiency.
Another notable patent is related to an electromechanical actuator, which includes a power disconnection method and apparatus. This electromechanical actuator is equipped with a power disconnection mechanism that consists of a case portion, inner shaft portion, supporting portions, and connecting members. The case portion is fixed to an electric motor, while the inner shaft portion is secured to a screw portion. The supporting portions are designed to support a load parallel to the axial direction, allowing for smooth operation. The connecting members are crucial as they break the connection between the case portion and the inner shaft portion, disconnecting power transmission when a prescribed torque is exceeded.
Career Highlights
Yasuyuki Shirai has built a successful career at Nabtesco Corporation, where he continues to innovate in the field of hydraulic systems. His work has significantly impacted the efficiency and safety of aircraft operations.
Collaborations
Shirai has collaborated with notable colleagues, including Atsushi Fukui and Masanori Hirai, contributing to advancements in their shared field of expertise.
Conclusion
Yasuyuki Shirai's contributions to aircraft hydraulic systems exemplify his dedication to innovation and engineering excellence. His patents reflect a commitment to improving the functionality and reliability of critical aircraft systems.