Aerospace Actuators 2: Signal-by-Wire and Power-by-Wire [Hardcover]

This book is the second in a series of volumes which cover the topic of aerospace actuators following a systems-based approach.
This second volume brings an original, functional and architectural vision to more electric aerospace actuators. The aspects of signal (Signal-by-Wire) and power (Power-by-Wire) are treated from the point of view of needs, their evolution throughout history, and operational solutions that are in service or in development.
This volume is based on an extensive bibliography, numerous supporting examples and orders of magnitude which refer to flight controls and landing gear for various aircraft (fixed or rotorwing, launchers) in commercial, private and military applications.
The topics covered in this set of books constitute a significant source of information for individuals and engineers from a variety of disciplines, seeking to learn more about aerospace actuation systems and components.

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Introduction ix

Chapter 1. Electrically Signaled Actuators (Signal-by-Wire) 1

1.1. Evolution towards SbW through the example of the flight controls 2

1.1.1. Military applications 2

1.1.2. Commercial aircraft 3

1.1.3. Helicopters and compound helicopters 5

1.2. Incremental evolution from all mechanical to all electrical 9

1.2.1. Exclusively mechanical signaling 9

1.2.2. Fly-by-Wire 18

1.3. Challenges associated with electrical signaling 22

1.3.1. Electrical interfaces 22

1.3.2. Evolution of the control and information transmission architectures 30

1.3.3. Reliability and backup channels 32

1.4. The example of landing gears 35

Chapter 2. Signal-by-Wire Architectures and Communication 39