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Aerospace Fluid Power – Materials and Characteristics of Flight Control Servoactuators of Various Aircraft

A-6B1 Hydraulic Servo Actuation Committee
  • Aerospace Standard
  • AIR4066C
  • Current
Published 2017-02-21 by SAE International in United States
This SAE Aerospace Information Report (AIR) defines the materials, strength and finishes utilized in current linear hydraulic flight control actuators. To keep the information at a relevant minimum, only cylinders (barrels), glands and pistons are listed. Also identified are the reasons for the material selection and any pertinent comments. All data were collected from the respective suppliers.
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Actuation System Data Summary for Missiles and Launch Vehicles

A-6B1 Hydraulic Servo Actuation Committee
  • Aerospace Standard
  • AIR1855A
  • Current
Published 2016-09-28 by SAE International in United States
This SAE Aerospace Information Report (AIR) includes all missile and launch vehicle actuation systems, including electrohydraulic, electropneumatic, and electromechanical types. The data for many systems are not complete. As more information becomes available, periodic updates will be issued to complete existing data sheets and to add new ones. An index by type of vehicle and by type of actuation system is included. The actual data sheets in the body of the report are organized in alphabetical order.
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Electrohydraulic Mechanical Feedback Servoactuators

A-6B1 Hydraulic Servo Actuation Committee
  • Aerospace Standard
  • ARP988B
  • Current
Published 2016-05-24 by SAE International in United States
This recommended practice is intended as a guide for the specification of electrohydraulic mechanical feedback servoactuators used for position control. It provides performance definitions and capabilities that are specific to mechanical-feedback servoactuators and different from those applicable to electrical-feedback servoactuators.
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Gas Power Servos and Reaction Control Systems

A-6B1 Hydraulic Servo Actuation Committee
  • Aerospace Standard
  • ARP739A
  • Current
Published 2014-11-20 by SAE International in United States
Various gas systems are classified in a broad sense, component operation is described in moderate detail, pertinent design parameters are discussed, and possible modes for system operation are listed.
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Gas Actuators (Linear and Vane Rotary Type)

A-6B1 Hydraulic Servo Actuation Committee
  • Aerospace Standard
  • ARP777A
  • Current
Published 2014-11-06 by SAE International in United States
Gas, for the purpose of this ARP, shall be defined as the gaseous product(s) resulting from the decomposition, dissociation, or combustion of liquid or solid mono or bi-propellants. Where other gases such as heated N2, H2, H2O (steam), etc., which may have similar physical and/or chemical properties as the defined "gas", are used to effect testing economics, they may he considered as being included in this ARP.
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Aerospace Fluid Power - Contamination Sensitivity - Considerations for Establishing Test Procedures for Flight Control Actuators

A-6B1 Hydraulic Servo Actuation Committee
  • Aerospace Standard
  • ARP5941
  • Current
Published 2014-10-27 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) describes the design conditions under which tests should be conducted to demonstrate satisfactory performance of a flight critical servo-actuator under the maximum allowable particulate contamination in the associated airplane hydraulic system. Additionally, this document also describes the recommended tests and the required acceptance criteria.
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Flight Critical Control Valves, Military Aircraft

A-6B1 Hydraulic Servo Actuation Committee
  • Aerospace Standard
  • ARP5796
  • Current
Published 2013-07-09 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) provides guidance in the design, development, qualification test, process control and production acceptance test for flight critical control valve (FCCV) design used in military flight control servoactuators where loss of single valve control could cause a catastrophic failure resulting in death, permanent total disability, and/or financial loss exceeding a defined contractual limit. The FCCV, which is one element of a flight control actuator servo control loop, is a variable position control valve which modulates fluid into and out of the servoactuator power stage cylinders. The FCCV may be mechanically driven by either a mechanical flight control system as shown in FIGURE 1 or hydraulically driven from electro-hydraulic servo valve (EHSV) modulation control flow as shown in FIGURE 2. This type of control valve is not an EHSV or a direct drive valve (DDV). The FCCV is used in military hydraulic systems which conform to AS5440.
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Aerospace - Direct Drive Servovalves

A-6B1 Hydraulic Servo Actuation Committee
  • Aerospace Standard
  • ARP4493A
  • Current
Published 2013-01-21 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) is intended as a guide to aid in the specification and testing of Direct Drive Servovalves, but does not include the associated electronic controller. The recommendations contained in this ARP are primarily confined to the input and output characteristics of Direct Drive Servovalves (DDV). The only exception to this approach involves the definition and specification of chip shear force, which is not typically measurable by nondestructive external testing. The information presented should be useful in standardizing the terminology, the specification of physical and performance parameters, and the test procedures used in conjunction with these components. Direct drive servovalves are of two basic types: open loop and closed loop. In the case of open loop direct drive servovalves, the significant input is the motor current as is the case with electrohydraulic servovalves covered in ARP490. A closed loop direct drive servovalve includes a means of position feedback and relies on an electronic controller to control its performance characteristics. Because of the importance of the closed loop category of DDVs, many…
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ACTUATION SYSTEM DATA SUMMARY FOR MISSILES AND LAUNCH VEHICLES

A-6B1 Hydraulic Servo Actuation Committee
  • Aerospace Standard
  • AIR1855
  • Historical
Published 2011-08-10 by SAE International in United States
The scope of this document includes all missile and launch vehicle actuation systems, including electrohydraulic, electropneumatic, and electromechanical types. The data for many systems are not complete. As more information becomes available, periodic updates will be issued to complete existing data sheets and to add new ones. An index by type of vehicle and by type of actuation system is included. The actual data sheets in the body of the report are organized in alphabetical order.
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GAS ACTUATORS (LINEAR AND VANE ROTARY TYPE)

A-6B1 Hydraulic Servo Actuation Committee
  • Aerospace Standard
  • ARP777
  • Historical
Published 2008-07-16 by SAE International in United States
Gas, for the purpose of this ARP, shall be defined as the gaseous product(s) resulting from the decomposition, dissociation, or combustion of liquid, or solid mono or bi-propellants. Where other gases such as heated N2, H2, H2O (steam), etc., which may have similar physical and/or chemical properties as the defined "gas", are used to effect testing economies, they may be considered as being included in this ARP.
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