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Standard

Recommended Design and Test Requirements for Quantity Measuring Hydraulic Fuses

2018-11-07
WIP
ARP8450
1. SCOPE This Aerospace Recommended Practice (ARP) provides recommendations for design and test requirements for quantity measuring hydraulic fuses. 1.1 Purpose The recommended requirements contained in this ARP are compiled for inclusion, as applicable, in a Procurement Specification for this type of hydraulic fuse. NOTES: 1. The recommended requirements in this ARP should be reviewed by the procuring activity and only those requirements that are applicable for a specific application should be incorporated in the Procurement Specification. 2.
Standard

Aerospace-Hydraulic Switching Valve, Pressure or Pilot Operated

2008-02-07
CURRENT
ARP4741
This SAE Aerospace Recommended Practice (ARP) establishes the requirements for the design, manufacture, and qualification of four hydraulic switching valves used in airborne applications. Two are pressure operated, Type IA and IB and two are solenoid/pilot operated, Type IIA and IIB. They are applicable to four pressure classes 3000, 4000, 5000 and 8000 psi. The equipment as designed is intended to be installed in hydraulic systems designed to AS5440 for military applications or ARP4752 and ARP4925 depending on the type of aircraft for commercial applications. Additional or refined requirements shall be contained in the detail (procurement) specification and these shall take precedence over any potentially conflicting requirements of this ARP or documents referenced by this ARP.
Standard

Valve, Air, High Pressure Charging, 5000 psi

2015-12-03
WIP
AS28889B
Recent Salt-Fog environmental qualification testing in accordance with RTCA/DO-160G, Paragraph 14, Category S identified both discrepancies in the performance specification documents and potential in-service corrosion problems with the charging valve. Revising and updating AS28889 - Valve; Aircraft, Pneumatic, High-Pressure Charging is necessary to resolve these items.
Standard

Aerospace - Valves, Check, Hydraulic, Aircraft and Missile

2000-10-01
CURRENT
ARP4946
This SAE Aerospace Recommended Practice (ARP) establishes the general requirements for spring-loaded, normally closed check valves for use in Type I, Type II, or Type III aircraft and missile hydraulic systems having nominal operating pressure shown in Table 1.
Standard

Aerospace Fluid Power-Hydraulic Thermal Expansion Relief Valves

2006-09-13
CURRENT
ARP4835
This SAE Aerospace Recommended Practice (ARP) establishes the general requirements for hydraulic thermal expansion relief valves used in aircraft and missile hydraulic systems having operating pressures and temperatures as identified in 1.2.
Standard

General Requirements for Hydraulic System Reservoirs

2018-06-11
CURRENT
AS5586A
This SAE Aerospace Standard (AS) specifies the general requirements for hydraulic system reservoirs that are installed in commercial and military aircraft and helicopters and also in missile hydraulic systems. This document includes design, test (production and qualification) criteria for various types of reservoirs. Appendix A provides information on hydraulic fluid volume requirements and reservoir sizing. This document also provides a basis for the Procurement Specification to completely define individual reservoir requirements.
Standard

Aerospace - General Requirements for Hydraulic System Reservoirs

2005-02-16
HISTORICAL
AS5586
This SAE Aerospace Standard (AS) specifies the general requirements for hydraulic system reservoirs that are installed in commercial and military aircraft and helicopters and also in missile hydraulic systems. This document includes design, test (production and qualification) criteria for various types of reservoirs. Appendix A provides information on hydraulic fluid volume requirements and reservoir sizing. This document also provides a basis for the Procurement Specification to completely define individual reservoir requirements
Standard

Aerospace-Hydraulic Switching Valve, Pressure or Pilot Operated

2014-10-22
WIP
ARP4741A
This SAE Aerospace Recommended Practice (ARP) establishes the requirements for the design, manufacture, and qualification of four hydraulic switching valves used in airborne applications. Two are pressure operated, Type IA and IB and two are solenoid/pilot operated, Type IIA and IIB. They are applicable to four pressure classes 3000, 4000, 5000 and 8000 psi. The equipment as designed is intended to be installed in hydraulic systems designed to AS5440 for military applications or ARP4752 and ARP4925 depending on the type of aircraft for commercial applications. Additional or refined requirements shall be contained in the detail (procurement) specification and these shall take precedence over any potentially conflicting requirements of this ARP or documents referenced by this ARP.
Standard

Aerospace - General Requirements for Hydraulic Relief Valves

2017-09-27
CURRENT
ARP4763
This SAE Aerospace Recommended Practice (ARP) is intended as a guide to define the requirements for aerospace hydraulic relief valves, including details pertinent to the design, performance, fabrication, and testing of the relief valves. NOTE 1: This ARP is for hydraulic system full-flow relief valves; ARP4835 has been developed to specifically cover thermal relief valves. NOTE 2: This document does not cover the modification of cracking pressure by external input; either hydraulic, electric, or pneumatic.
Standard

Aerospace-Solenoid Valve, Hydraulic, Three Way, Two Position, Direct Acting

2019-10-10
WIP
ARP4945B
This SAE Aerospace Recommended Practice (ARP) is intended as a guide to aid in the specifying and testing of direct acting three way, two position, single and multiple coil, normally open and normally closed solenoid valves used for the pilot actuation of hydraulic control systems and the control of hydraulic components. The information presented should be useful in standardizing terminology, in specifying requirements and performance parameters, and in defining test methods. The recommendations do not restrict or attempt to define the internal design features of solenoid valves. Standard mechanical, electrical and fluid porting interfaces are recommended to provide commonalty, interchangeability, design flexibility and to be more affordable. In general, this recommended practice is directed toward solenoid valves for use in military and commercial flight control and hydraulic actuation systems.
Standard

Aerospace-Solenoid Valve, Hydraulic, Three Way, Two Position, Direct Acting

1997-11-01
HISTORICAL
ARP4945
This SAE Aerospace Recommended Practice (ARP) is intended as a guide to aid in the specifying and testing of direct acting three way, two position, single and multiple coil, normally open and normally closed solenoid valves used for the pilot actuation of hydraulic control systems and the control of hydraulic components. The information presented should be useful in standardizing terminology, in specifying requirements and performance parameters, and in defining test methods. The recommendations do not restrict or attempt to define the internal design features of solenoid valves. Standard mechanical, electrical and fluid porting interfaces are recommended to provide commonalty, interchangeability, design flexibility and to be more affordable. In general, this recommended practice is directed toward solenoid valves for use in military and commercial flight control and hydraulic actuation systems.
Standard

Aerospace-Solenoid Valve, Hydraulic, Three Way, Two Position, Direct Acting

2003-09-27
CURRENT
ARP4945A
This SAE Aerospace Recommended Practice (ARP) is intended as a guide to aid in the specifying and testing of direct acting three way, two position, single and multiple coil, normally open and normally closed solenoid valves used for the pilot actuation of hydraulic control systems and the control of hydraulic components. The information presented should be useful in standardizing terminology, in specifying requirements and performance parameters, and in defining test methods. The recommendations do not restrict or attempt to define the internal design features of solenoid valves. Standard mechanical, electrical and fluid porting interfaces are recommended to provide commonalty, interchangeability, design flexibility and to be more affordable. In general, this recommended practice is directed toward solenoid valves for use in military and commercial flight control and hydraulic actuation systems.
Standard

RECOMMENDED PRACTICE FOR THE DESIGN OF TUBING INSTALLATIONS FOR AEROSPACE FLUID POWER SYSTEMS

1976-04-01
HISTORICAL
ARP994
This document is a compendium of recommended practices for the design of tubing systems for the transmission of liquid and gasses influid power systems for aerospace vehicles such as aircraft, missiles and boosters, and is considered applicable to the design of future space vehicles and other applications using aircraft technology. Primary emphasis is given to recommended practices for line sizing, tube routing, supports and clamping, stress considerations and permissible defects, and provisions for flexure through the use of flexible hoses, coiled tubes, swivel joints, and expansion glands. Fluid power systems are differentiated from the normal aircraft fuel and oil systems and the various fluid systems used for environmental control and air conditioning systems; however, the practices cited herein will in many cases be applicable to these other systems.
Standard

Design of Tubing Installations for Aerospace Hydraulic Systems

2016-11-17
CURRENT
ARP994B
This document provides recommended practices for the design and selection of tube, hose, and fitting systems that are used to transmit hydraulic fluid on aircraft. NOTE: Guidance for the sizing of hydraulic tubing is contained in Appendix A.
Standard

Recommended Practice for the Design of Tubing Installations for Aerospace Fluid Power Systems

2012-08-22
HISTORICAL
ARP994A
This document provides recommended practices for the design of tubing systems that are used for the transmission of liquid and gasses in fluid power systems for aerospace vehicles such as aircraft, missiles and boosters. The primary emphasis is given to recommended practices for line sizing, tube routing, supports and clamping, stress considerations and permissible defects, and provisions for flexure through the use of flexible hoses, coiled tubes, swivel joints, and expansion glands. The sections regarding tubing materials and fitting types are included for reference, but particular recommendations are purposely avoided since their selection is dependent upon the specific requirements of each particular vehicle system and many other factors.
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