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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 – System Integration Factors That Affect Hydraulic Pump Life

2017-02-13
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

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

Information Guide for Electric Motors which Drive Hydraulic Pumps

2016-04-25
WIP
AIR6855
This document provides an application guide for electric motors that drive aerospace hydraulic pumps. It provides details of the characteristics of electric motors powered by DC, Fixed Frequency AC, and Variable Frequency AC electrical systems. The applications include both military and commercial aircraft.
Standard

High Pressure Pneumatic Compressors Users Guide For Aerospace Applications

2013-11-11
CURRENT
AIR4994A
Gas compressors (air and other compressible fluids) have been used sporadically since the 1940's for various utility functions in aerospace applications. They have been used to provide power to gun purge and drive systems, engine or APU starters (recharge accumulators), reservoir pressurization, cockpit pressurization, braking systems, canopy seals, engine control devices, landing gear activation, and boosted flight controls (see Table 1). In current state-of-the-art aircraft, most pneumatic system power is extracted from a stage of compression in the turbo-jet engine. As more and more demands are put on new generation engines for fuel economy and performance there is an increasing need for a new source of pneumatic power. This document is intended to describe current state-of-the-art technology in compressors, define the limitations, discuss enhancements needed and attempt to predict the needs of the future.
Standard

Aircraft Hydraulic Starter/Pumps

2013-10-28
CURRENT
AS838A
This specification established (1) the common requirements for hydraulic units capable of functioning as starters and as pumps suitable for use in aircraft and missiles and (2) the methods to be used for demonstrating compliance with these requirements.
Standard

Liquid Propellant Gas Generation Systems

2013-06-17
CURRENT
AIR1343B
This information report presents a preliminary discussion of liquid propellant gas generation (LPGG) systems. A LPGG system, as used herein, is defined as a system which stores a liquid propellant and, on command, discharges and converts the liquid propellant to a gas. The LPGG system can interface with a gas-to-mechanical energy conversion device to make up an auxiliary power system. Figure 1 shows a block diagram of LPGG system components which include a propellant tank, propellant expulsion system, propellant control and a decomposition (or combustion) chamber. The purpose of this report is to provide general information on the variety of components and system arrangements which can be considered in LPGG design, summarize advantages and disadvantages of various approaches and provide basic sizing methods suitable for initial tradeoff purposes.
Standard

Gas Motor

2013-06-17
CURRENT
ARP719B
It is intended that this SAE Aerospace Recommended Practice (ARP) will set down guidelines for the development and test of gas motors to provide a practical and reliable hot gas rotary actuation mechanism. Specific operational and test requirements shall be specified in a detail specification.
Standard

Compressor Units, Air/Gas, General Requirements For

2013-06-13
CURRENT
AS26805B
This specification covers the general requirements for the design and construction of air/gas compressor units (see 6.4.1). The detail requirements for a particular air compressor unit shall be as specified in the individual equipment specification for that particular air compressor unit (see 6.2).
Standard

Hydraulic Pump Minimum Inlet Pressure Test

2013-05-07
WIP
ARP6249
This SAE Aerospace Recommended Practice contains technical information for conducting and evaluating Minimum Inlet Pressure for Hydraulic Piston Pumps. The methods used were prepared by system designers and hydraulic engineers from the aerospace industry and government services as part of the SAE Committee A-6, Aerospace Fluid Power, Actuation, and Control Technologies, committee meetings. This practice is intended to provide a standard method to compare pump performance and is not intended to replicate aircraft architecture.
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 - System Integration Factors That Affect Hydraulic Pump Life

2011-01-03
HISTORICAL
AIR1922A
This AIR 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

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

2010-08-02
CURRENT
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 Auxiliary Power Sources

2010-06-16
CURRENT
AIR744C
This SAE Aerospace Information Report (AIR) is a review of the general characteristics of power sources that may be used to provide secondary, auxiliary, or emergency power for use in aircraft, space vehicles, missiles, remotely piloted vehicles, air cushion vehicles, surface effect ships, or other vehicles in which aerospace technology is used. The information contained herein is intended for use in the selection of the power source most appropriate to the needs of a particular vehicle or system. The information may also be used in the preparation of a power source specification. Considerations for use in making a trade study and an evaluation of the several power sources are included. More detailed information relating to specific power sources is available in other SAE Aerospace Information Reports or in Aerospace Recommended Practices.
Standard

Aerospace - Application Guide for Hydraulic Power Transfer Units

2009-12-30
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

Compressor Units, Air/Gas, General Requirements For

2008-04-09
HISTORICAL
AS26805A
This specification covers the general requirements for the design and construction of air/gas compressor units (see 6.4.1). The detail requirements for a particular air compressor unit shall be as specified in the individual equipment specification for that particular air compressor unit (see 6.2).
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

Compressor Units, Air/Gas, General Requirements For

2001-03-01
HISTORICAL
AS26805
This specification covers the general requirements for the design and construction of air/gas compressor units (see 6.4.1). The detail requirements for a particular air compressor unit shall be as specified in the individual equipment specification for that particular air compressor unit (see 6.2).
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