Aerospace Actuators 1 Needs, Reliability and Hydraulic Power Solutions [Hardcover]

This book is the first of a series of volumes that cover the topic of aerospace actuators following a systems-based approach.

This first volume provides general information on actuators and their reliability, and focuses on hydraulically supplied actuators. Emphasis is put on hydraulic power actuators as a technology that is used extensively for all aircraft, including newer aircraft.

Currently, takeovers by major corporations of smaller companies in this field is threatening the expertise of aerospace hydraulics and has inevitably led to a loss of expertise. Further removal of hydraulics teaching in engineering degrees means there is a need to capitalize efforts in this field in order to move it forward as a means of providing safer, greener, cheaper and faster aerospace services.

 

The topics covered in this set of books constitute a significant source of information for individuals and engineers seeking to learn more about aerospace hydraulics.

 

Introduction ix

Notations and Acronyms xiii

Chapter 1. General Considerations 1

1.1. Power transmission in aircraft 1

1.1.1. Needs and requirements for secondary power and power flows 1

1.1.2. Actuation functions 2

1.1.3. Actuation needs and constraints 5

1.2. Primary and secondary power transmission functions for actuators 8

1.2.1. Primary functions 10

1.2.2. Secondary functions 12

1.2.3. Signal approach and power approach 13

1.2.4. Types of actuators 14

1.3. Hydraulic power actuation 16

1.3.1. Units and reference values 16

1.3.2. Energy transport by a liquid 18

1.3.3. Historical evl#&