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Standard

Accumulators, Hydraulic, Cylindrical, Aircraft, Maintenance Free, Factory Precharged

2002-07-25
HISTORICAL
ARP4378
This SAE Aerospace Recommended Practice (ARP) establishes the minimum requirements and procedures for the design, construction, testing and performance of aerospace, maintenance free, factory pre-charged hydraulic accumulators. The accumulators are designed for use in aircraft hydraulic systems at maximum rated operating pressures up to 8000 psi (55158 KPa). The temperature range of the accumulator is -65 to 275 °F (-54 to 135 °C).
Standard

Aerospace - Accumulator, Hydraulic, Cylindrical, Piston Separated

2007-11-20
HISTORICAL
ARP4379A
This SAE Aerospace Recommended Practice (ARP) is intended as a guide in defining the requirements for aerospace piston separated hydraulic accumulators, including details pertinent to the design, fabrication, and performance of the accumulator. This type of accumulator has a piston separator and contains both high-pressure gas and fluid. The accumulator is used in aerospace hydraulic systems of the following types as defined in AS5440 with design operating pressures of up to 8000 psi (55,160 kPa). Type I: -65 to +160 °F (-54 to +71 °C) fluid temperature Type II: -65 to +275 °F (-54 to +135 °C) fluid temperature For commercial aerospace or helicopter applications, the information and guidelines of ARP4752 or ARP4925 respectively, are considered.
Standard

Aerospace - Accumulator, Hydraulic, Self-Displacing

2008-12-19
HISTORICAL
ARP4553A
This SAE Aerospace Recommended Practice (ARP) is intended to provide design and qualification requirements for self-displacing hydraulic accumulators. These requirements are intended be included in the Procurement Specification for the accumulator. Those requirements identified by the use of “shall” are considered to be essential requirements; those requirements identified by the use of “should” are considered to be optional requirements for inclusion in the Specification at the discretion of the Purchaser. In addition, test methods for production acceptance and qualification purposes are provided.
Standard

Aerospace - Application Guide for Hydraulic Power Transfer Units

2022-05-23
WIP
ARP1280C
This SAE Aerospace Recommended Practice (ARP) is an application guide for hydraulic power transfer units and describes: The various types Typical design approaches Their operational characteristics and limitations Circuit recommendations Typical applications The scope of this ARP is limited to devices that transfer power between hydraulic systems and do so by means of rotary subassemblies such as hydraulic motors and pumps.
Standard

Aerospace - Application Guide for Hydraulic Power Transfer Units

2014-11-13
CURRENT
ARP1280B
This SAE Aerospace Recommended Practice (ARP) is an application guide for hydraulic power transfer units and describes: The various types Typical design approaches Their operational characteristics and limitations Circuit recommendations Typical applications The scope of this ARP is limited to devices that transfer power between hydraulic systems and do so by means of rotary subassemblies such as hydraulic motors and pumps.
Standard

Aerospace - Civil Type Variable Delivery, Pressure Compensated, Hydraulic Pump

2003-09-25
HISTORICAL
AS595C
This SAE Aerospace Standard (AS) establishes the general requirements for the design, construction, acceptance and qualification test of pressure compensated, variable delivery hydraulic pumps, used in civil aircraft hydraulic systems. It provides additional parameters for a Procurement Specification to be used in conjunction with this AS for each pump. This AS is applicable to hydraulic pumps driven by an engine, in systems conforming to the general requirements of ARP4752, and the regulations of FAR and/or JAR 25. It is also applicable to pumps driven by other power sources such as electric motors, ram air turbines and engine bleed air turbines.
Standard

Aerospace Hydraulic Pump Controls

2017-05-10
CURRENT
AIR5872A
This SAE Aerospace Information Report (AIR) presents an overview of the application and control of fixed and variable displacement pumps with the emphasis on the controls most commonly used on variable displacement pumps. It describes various options to control the operation of hydraulic pumps in terms of controlling the pump output pressure and/or flow and assisting in the selection of the pump.
Standard

Aerospace Hydraulic Pump Controls

2011-10-11
HISTORICAL
AIR5872
This Aerospace Information Report presents an overview of the application and control of fixed and variable displacement pumps with the emphasis on the controls most commonly used on variable displacement pumps. It describes various options to control the operation of hydraulic pumps in terms of controlling the pump output pressure and/or flow and assisting in the selection of the pump.
Standard

Aerospace – Civil Type Variable Delivery, Pressure Compensated, Hydraulic Pump

2015-10-26
HISTORICAL
AS595D
This SAE Aerospace Standard (AS) establishes the general requirements for the design, construction, acceptance and qualification testing of flat cut-off pressure compensated, variable delivery hydraulic pumps, used in civil aircraft hydraulic systems. It also provides parameters for a Procurement Specification to be used in conjunction with this AS for each pump. NOTE: Hydraulic pumps may incorporate features such as a clutch in the input drive, which will not be covered by this standard.
Standard

Aerospace – Military Type Variable Delivery, Pressure Compensated Hydraulic Pump

2022-05-18
WIP
AS19692C
This SAE Aerospace Standard (AS) establishes the general requirements for the design, construction, acceptance, and qualification testing of flat cut-off pressure compensated, variable delivery hydraulic pumps used in military aircraft hydraulic systems. It also provides parameters for a Procurement Specification to be used in conjunction with this AS. The hydraulic pumps defined by this AS are generally for use in aircraft hydraulic systems conforming to and as defined in AS5440 and MIL-H-8891, as applicable. NOTES: 1. Hydraulic pumps may incorporate features such as a clutch in the input drive, which will not be covered by this standard. 2. AS595 should be used for commercial aircraft hydraulic pumps. 3. This document should not be used for hydraulic pumps in Electro-Hydrostatic Actuator applications (EHAs).
Standard

Aerospace – Military Type Variable Delivery, Pressure Compensated Hydraulic Pump

2016-06-22
CURRENT
AS19692B
This SAE Aerospace Standard (AS) establishes the general requirements for the design, construction, acceptance, and qualification testing of flat cut-off pressure compensated, variable delivery hydraulic pumps used in military aircraft hydraulic systems. It also provides parameters for a Procurement Specification to be used in conjunction with this AS. The hydraulic pumps defined by this AS are generally for use in aircraft hydraulic systems conforming to and as defined in AS5440 and MIL-H-8891, as applicable.
Standard

Aerospace – System Integration Factors That Affect Hydraulic Pump Life

2022-11-18
CURRENT
AIR1922B
This SAE Aerospace Information Report presents the following factors that affect hydraulic pump life and performance: a The need to supply hydraulic fluid at the correct pressure and quality to the pump inlet port b Considerations for the pump output c Factors to be considered for the pump case drain lines d The mounting of the hydraulic pump e Hydraulic fluid properties, including cleanliness
Standard

Application Guide for Aerospace Hydraulic Motors

2021-11-09
CURRENT
ARP4940A
This SAE Aerospace Recommended Practice (ARP) is an application guide for fixed and variable displacement hydraulic motors. It provides details of the characteristics of fixed and variable displacement hydraulic motors, architectures, circuit designs, controls, and typical applications. The applications include airborne and defense vehicles with emphasis on high performance applications.
Standard

Application Guide for Aerospace Hydraulic Motors

2014-07-01
HISTORICAL
ARP4940
This SAE Aerospace Recommended Practice (ARP) is an application guide for fixed and variable displacement hydraulic motors. It provides details of the characteristics of fixed and variable displacement hydraulic motors, architectures, circuit designs, controls, and typical applications. The applications include airborne and defense vehicles with emphasis on high performance applications.
Standard

CIVIL TYPE AIRCRAFT VARIABLE DELIVERY HYDRAULIC PUMP

1992-07-01
HISTORICAL
AS595A
This specification establishes the common requirements and provides a guide for special requirements for variable delivery hydraulic pumps, suitable for use in civil aircraft. It also specifies the methods to be used for demonstrating compliance with these requirements.
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