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Standard

Fault Isolation in Environmental Controls Systems of Commercial Transports

2017-08-08
WIP
AIR1266B
This SAE Aerospace Information Report (AIR) outlines concepts for the design and use of fault isolation equipment that have general application. The specific focus is on fault isolation of environmental control systems (ECS) in commercial transports. Presented are general fault isolation purposes, design principles, and demonstration of compliance criteria. These are followed by three design examples to aid in understanding the design principles. Future trends in built-in-test-equipment (BITE) design are discussed, some of which represent concepts already being implemented on new equipment.
Standard

FAULT ISOLATION IN ENVIRONMENTAL CONTROL SYSTEMS OF COMMERCIAL TRANSPORTS

1977-08-01
HISTORICAL
AIR1266
This AIR outlines concepts for the design and use of fault isolation equipment that have general application. However, the specific concern applies only to use with Environmental Control Systems in commercial transports. In particular, automatic Built In Test Equipment (BITE) with manual initiation and software programs are covered as systems already in use.
Standard

Fault Isolation in Environmental Control Systems of Commercial Transports

1993-11-01
CURRENT
AIR1266A
This SAE Aerospace Information Report (AIR) outlines concepts for the design and use of fault isolation equipment that have general application. The specific focus is on fault isolation of environmental control systems (ECS) in commercial transports. Presented are general fault isolation purposes, design principles, and demonstration of compliance criteria. These are followed by three design examples to aid in understanding the design principles. Future trends in built-in-test-equipment (BITE) design are discussed, some of which represent concepts already being implemented on new equipment.
Standard

Power Sources for Fluidic Controls

2012-05-31
CURRENT
AIR1245B
This SAE Aerospace Information Report (AIR) presents a review of the types and general characteristics of power sources that may be used to provide the power for gaseous or liquid fluidic control systems. Fluidic definitions, terminology, units and symbols are defined in Reference 2.1.1.
Standard

Spectrum Analyzers for Electromagnetic Interference Measurements

1971-09-01
CURRENT
AIR1255
This AIR was prepared to inform the aerospace industry about the electromagnetic interference measurement capability of spectrum analyzers. The spectrum analyzers considered are of the wide dispersion type which are electronically tuned over an octave or wider frequency range. The reason for limiting the AIR to this type of spectrum analyzer is that several manufacturers produce them as general-purpose instruments, and their use for EMI measurement will give significant time and cost savings. The objective of the AIR is to give a description of the spectrum analyzers, consider the analyzer parameters, and describe how the analyzers are usable for collection of EMI data. The operator of a spectrum analyzer should be thoroughly familiar with the analyzer and the technical concepts reviewed in this AIR before performing EMI measurements.
Standard

Selecting Slipper Seals for Hydraulic-Pneumatic Fluid Power Applications

2004-10-01
WIP
AIR1244B
The slipper seal is defined and the basic types in current use are described. Guidelines for selecting the type of slipper seal for a given design requirement are covered in terms of friction, leakage, service life, installation characteristics, and interchangeability.
Standard

SELECTING SLIPPER SEALS FOR HYDRAULIC-PNEUMATIC FLUID POWER APPLICATIONS

1988-10-01
CURRENT
AIR1244A
The slipper seal is defined and the basic types in current use are described. Guide lines for selecting the type of slipper seal for a given design requirement are covered in terms of friction, leakage, service life, installation characteristics, and interchangeability.
Standard

POWER SOURCES FOR FLUIDIC CONTROLS

1973-06-01
HISTORICAL
AIR1245
This AIR concerns itself with the end use of Fluidic (or Flueric) control hardware on aerospace vehicle applications. The fluidic control hardware application is viewed as a system comprised of the following subsystems: Power Source Power Conditioner Fluidic/Flueric Control(s) This AIR identifies potential power sources and relates the design of the fluidic/flueric controls to the nature of both the power source and, as required, the power conditioner. In the unlikely event that the power source yields a fluid which is always at the desired pressure level, temperature range and flow rate capacity and, further, is free of particulate or liquid contaminate, pressure pulsation, etc., no power conditioner is required. Experience has shown that the power conditioner is usually necessary to assure operability and reliability of the total control system.
Standard

Power Sources for Fluidic Controls

1995-07-01
HISTORICAL
AIR1245A
This SAE Aerospace Information Report (AIR) presents a review of the types and general characteristics of power sources that may be used to provide the power for gaseous or liquid fluidic control systems. Fluidic definitions, terminology, units and symbols are defined in Reference 2.1.1.
Standard

Anti Blow-By Design Practice for Cap Seals

1999-12-01
HISTORICAL
AIR1243B
This SAE Aerospace Information Report (AIR) provides information on anti blow-by design practice for cap seals. Suggestions for piston cap seal sidewall notch design and other anti blow-by design details are also described. It also includes information on two key investigations based on the XC-142 as part of the text and as Appendix A.
Standard

Anti Blow-By Design Practice for Cap Seals

2013-02-10
HISTORICAL
AIR1243C
This SAE Aerospace Information Report (AIR) provides information on anti blow-by design practice for cap seals. Suggestions for piston cap seal sidewall notch design and other anti blow-by design details are also described. It also includes information on two key investigations based on the XC-142 as part of the text and as Appendix A.
Standard

Anti Blow-By Design Practice for Cap Seals

2018-08-13
CURRENT
AIR1243D
This SAE Aerospace Information Report (AIR) provides information on anti blow-by design practice for cap seals. Suggestions for piston cap seal sidewall notch design and other anti blow-by design details are also described. It also includes information on two key investigations based on the XC-142 as part of the text and as Appendix A.
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