Design Considerations for Hydraulically Powered Fly-By-Wire Flight Control Actuation Systems C1132
Topics: Quality, Safety & Maintenance
This four-hour short course will present an overview of hydraulically powered flight control actuation systems used on fly-by-wire aircraft, covering both military and commercial applications. The scope this course covers the issues related to the mechanical design of actuators themselves, as well as their control electronics. Additionally, this course will provide participants an overview of the design considerations behind these flight control actuation systems.
Learning Objectives
By attending this seminar, you will be able to:
- Explain flight control actuation systems in military and commercial aircraft fly-by-wire systems
- Identify key design considerations of control actuators
- Identify the design considerations of actuator control electronics
- Evaluate overall design considerations of flight control actuation systems
Who Should Attend
This seminar is designed for engineers and other key personnel with little or no previous flight control actuation knowledge.
Prerequisites
None
You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.
- Actuation System Architectures
- Centralized electronics
- Remote electronics
- Redundancy schemes (hydraulic and electronic)
- Typical Requirements
- Operating modes
- Hinge moment (stall force)
- Stroke
- Rates
- Position accuracy
- Dynamic response and stability
- Static stiffness
- Dynamic stiffness
- Endurance
- Leakage
- Safety and Reliability
- Interfaces
- Envelope
- Weight
- Design Considerations
- Balanced versus unbalanced piston areas
- Piston sizing
- Stroke
- Servovalve parameters
- Flow passages
- Sensor selection
- Logic valves
- Seal selection
- Control loops, position and load sharing
- Loop gain
- Monitors
Thomas Greetham
Thomas Greetham has been employed at Moog Inc. since 1982, mostly in the aircraft flight control arena. He has held various management and engineering positions, including key positions in the development of aircraft flight control actuation systems, including the B-2, Indian Air Force LCA, V-22, Challenger 300, EADSA400M and F-15 FBW Rudder. He is Vice-Chair of the SAE- A-6B1 Hydraulic Servo actuation panel. He received both his B.S. and M.S. degrees in Mechanical Engineering from The Ohio State University.
