Helicopter Technology Development and Application
Dr. Jing G. Yen 閻經國
Director of Flight Technology, Bell Helicopter Textron Inc., Fort Worth, TX
摘要：
Helicopter technology advancement has made significant progress in recent years. Modern helicopters now fly faster, produce lower vibration, and are safer, quieter, and more economical to operate than those designed years ago.
The first civil helicopter, the Bell Model 47, was certified in 1946. Four hundred of those are still flying today. Helicopter designers and technology engineers are now able to take advantage of sophisticated dynamics and structural methodology, computational fluid dynamics (CFD), and 3-D electronic mockup to design more affordable helicopters. This advantage is due to advancement in structure material and manufacturing technology, advancement in avionics and system integration, and availability of super computer and workstations. However, there is a limitation on performance because of the complexion of the dynamic and aerodynamic environment of a helicopter. Challenging this limitation, tilt rotor technology developed, matured, and is now ready for production.
This presentation will address helicopter safety, business opportunities, civil applications, technology challenges, and modern design processes introduced. Adiscussion of competitive edge in the market place will follow.
簡歷：
Dr. Yeh has 30 years experience with Bell Helicopter. He currently manages the Flight Technology, which encompasses aerodynamics, handling qualities, rotor dynamics, structural dynamics, aeromechanics methodology and flight test support disciplines. He serves in the NATO/AGARD Flight Vehicle Integration Panel. Dr. Yeh was Editor-in-Chief for the Journal of the AHS and Chairman of AIAA North Texas Section.