Aerospace Actuators 3

Jean-Charles Maré is Professor at the National Institute of Applied Sciences (INSA), and researcher at the Clément Ader Institute in Toulouse, France.

• Introduction ixList of Acronyms xiiiChapter 1 European Commercial Aircraft before the Airbus A320 11.1 Introduction 11.2 The Caravelle and irreversible primary flight servocontrols 21.2.1 Servodyne servocontrol 41.2.2 Artificial feel of load 91.2.3 Hydraulic power generation 111.3 The Concorde and flight controls with analog electrical signals and controllers 141.3.1 General architecture of flight controls 161.3.2 Operation modes 191.3.3 Closed-loop analog electrical control 201.3.4 Relay jack and PFCU 221.3.5 Artificial feel 251.3.6 Hydraulic power generation 28Chapter 2 Airbus A320 and Electrically Signaled Actuators 312.1 Airbus A320 or Signal-by-Wire with digital computers 312.2 Flight controls 322.2.1 General concepts 332.2.2 Architectures and redundancies 342.2.3 Actuators 382.3 Landing gears 592.3.1 Braking 592.3.2 Auxiliary landing gear steering 632.4 Hydraulic system architecture 662.5 Hydraulic pumps 692.5.1 Engine-driven pump (EDP) 732.5.2 Electric motor pump (EMP) 762.5.3 Reversible power transfer unit (PTU) 772.5.4 Ram air turbine (RAT) 78Chapter 3 Airbus A380 793.1 Introduction 793.1.1 A need for high-capacity long-range aircraft 803.1.2 Actuation need 813.1.3 Innovative architectures and technologies 833.2 Data transmission and processing 853.3 Power generation and distribution 893.3.1 2H-2E architecture 893.3.2 Hydraulic power generation 913.4 Flight controls 963.4.1 Topology 963.4.2 Displacement control for the actuators of slats and flaps 1023.4.3 Electrohydrostatic actuators 1073.4.4 Trimmable horizontal stabilizer actuator 1113.5 Landing gears 1163.5.1 Topology 1163.5.2 Signal considerations 1173.5.3 Power considerations 1173.5.4 Extension/retraction 1193.5.5 Steering 1193.5.6 Braking 1233.6 Thrust reversers 1263.6.1 Locking in stowed configuration 1293.7 Subsequent programs 130Chapter 4 V-22 and AW609 Tiltrotors 1334.1 V-22 Osprey military tiltrotor 1344.1.1 Overall architecture of flight controls 1354.1.2 Hydraulic power generation architecture 1394.1.3 Control architecture of flight control actuators 1404.1.4 Control surface actuators 1414.1.5 Swashplate actuators 1434.1.6 Pylon conversion actuators 1464.2 AW609 civil tiltrotor 1614.2.1 Overall architecture of flight controls 1624.2.2 Hydraulic power architecture 1644.2.3 Power architecture of electrohydraulic actuators 1654.2.4 Pylon conversion actuators 1714.3 Comparison of the pylon conversion actuator approaches for the V-22 and AW609 182Bibliography 185Index 193