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Liquid Oxygen Systems

2014-10-21
WIP
AIR825/5B
This Aerospace Information Report provides general information to aircraft designers and engineers, regarding LOX, its properties, its storage and its conversion to gas. Much useful information is included herein for aircraft designers regarding important design considerations for a safe and effective installation to an aircraft. The associated ground support equipment needed to support operations of LOX equipped aircraft is also discussed. It is important to realize that LOX equipped aircraft cannot be supported unless this support infrastructure is also available. A significant part of this document will address the specific advantages, disadvantages and precautions relating to LOX systems. These are important issues that must be considered in deciding which oxygen system to install to the aircraft. Also, many commercial and military aircraft use aeromedical LOX equipment that is mostly portable equipment.
Standard

Liquid Oxygen Systems

2002-04-01
HISTORICAL
AIR825/5
This Aerospace Information Report provides general information to aircraft designers and engineers, regarding LOX, its properties, its storage and its conversion to gas. Much useful information is included herein for aircraft designers regarding important design considerations for a safe and effective installation to an aircraft. The associated ground support equipment needed to support operations of LOX equipped aircraft is also discussed. It is important to realize that LOX equipped aircraft cannot be supported unless this support infrastructure is also available. A significant part of this document will address the specific advantages, disadvantages and precautions relating to LOX systems. These are important issues that must be considered in deciding which oxygen system to install to the aircraft. Also, many commercial and military aircraft use aeromedical LOX equipment that is mostly portable equipment.
Standard

Liquid Oxygen Systems

2003-03-19
CURRENT
AIR825/5A
This Aerospace Information Report provides general information to aircraft designers and engineers, regarding LOX, its properties, its storage and its conversion to gas. Much useful information is included herein for aircraft designers regarding important design considerations for a safe and effective installation to an aircraft. The associated ground support equipment needed to support operations of LOX equipped aircraft is also discussed. It is important to realize that LOX equipped aircraft cannot be supported unless this support infrastructure is also available. A significant part of this document will address the specific advantages, disadvantages and precautions relating to LOX systems. These are important issues that must be considered in deciding which oxygen system to install to the aircraft. Also, many commercial and military aircraft use aeromedical LOX equipment that is mostly portable equipment.
Standard

Chemical Oxygen Systems

2002-02-04
HISTORICAL
AIR825/4
This SAE Aerospace Information Report (AIR) provides an orientation regarding the general technology of chemical oxygen generators to aircraft engineers for assistance in determining whether chemical oxygen generators are an appropriate oxygen supply source for hypoxia protection in a given application and as an aid in specifying such generators. Information regarding the details of design and manufacture of chemical oxygen generators is generally beyond the scope of this document.
Standard

Chemical Oxygen Systems

2002-08-19
CURRENT
AIR825/4A
This SAE Aerospace Information Report (AIR) provides an orientation regarding the general technology of chemical oxygen generators to aircraft engineers for assistance in determining whether chemical oxygen generators are an appropriate oxygen supply source for hypoxia protection in a given application and as an aid in specifying such generators. Information regarding the details of design and manufacture of chemical oxygen generators is generally beyond the scope of this document.
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Introduction to Oxygen Equipment for Aircraft

2013-06-14
WIP
AIR825/1A
The purpose of this document is to give the reader an overview of the document package which makes up AIR825, Introduction to Oxygen Equipment for Aircraft, and a basic overview (see Section 4) of the operational concerns driven by human physiology during altitude exposure.
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Effects of Acute Altitude Exposure in Humans: Requirements for Physiological Protection

2007-07-26
CURRENT
AIR825/2
The intent of this SAE Aerospace Information Report (AIR) is to describe the effects of the environmental changes on human physiology and the protection required to avoid negative consequences resulting from altitude exposure. A brief presentation of basic terms and considerations required to discuss the topic of human physiology at altitude are followed by an overview of the cardiovascular and respiratory systems. Issues specifically related to human exposure to altitude are then discussed.
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Gaseous Oxygen and Oxygen Equipment, Introductory

2010-08-11
CURRENT
AIR825/3
This Aerospace Information Report provides a general discussion on gaseous breathing oxygen and oxygen equipment for use on commercial aircraft. Other types of oxygen systems are mentioned to assist in this discussion. For detailed information on systems other than gaseous, reference the appropriate section of AIR825.
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Basic Aircraft Oxygen Systems Design

2010-06-10
CURRENT
AIR825/14
This slash document collects general reference material related to gaseous oxygen system flow requirements and sizing calculations. This document will assist oxygen system equipment designers and operators to establish systems and equipment requirements. The document consists of charts, tables, system schematics, system requirements, and sample calculations for system sizing.
Standard

Oxygen System Integration and Performance Precautions

2003-03-25
CURRENT
AIR825/12A
Oxygen system integration and performance precautions are in particularly dependent on applicable sections of airworthiness requirements per FAR/JAR 25. In this document information will be provided on common principles and good practices regarding design criteria, installation, manufacturing, safety aspects and system handling during maintenance and inspection.
Standard

Oxygen System Integration and Performance Precautions

2002-04-01
HISTORICAL
AIR825/12
Oxygen system integration and performance precautions are in particularly dependent on applicable sections of airworthiness requirements per FAR/JAR 25. In this document information will be provided on common principles and good practices regarding design criteria, installation, manufacturing, safety aspects and system handling during maintenance and inspection.
Standard

Closed-Cycle Protective Breathing Devices

2002-08-19
CURRENT
AIR825/11A
Closed-cycle protective breathing apparatus, commonly referred to as rebreathers, or CCBA provide trained aircrew members or ground personnel with eye and respiratory protection from toxic atmospheres.
Standard

Closed-Cycle Protective Breathing Devices

2001-12-14
HISTORICAL
AIR825/11
Closed-cycle protective breathing apparatus, commonly referred to as rebreathers, or CCBA provide trained aircrew members or ground personnel with eye and respiratory protection from toxic atmospheres.
Standard

Protective Breathing Equipment for Flight Deck and Cabin Crew Members

2002-08-19
CURRENT
AIR825/10A
This SAE Aerospace Information Report (AIR) provides general information to aircraft engineers, regarding the types of Protective Breathing Equipment (PBE) configurations which are available, the intended functions of such equipment, and the technical approaches which may be used in accomplishing these functions. The term "PBE" or "Protective Breathing Equipment" has been used to refer to various types of equipment, which are used in a variety of applications. This way of using the terminology has been a source of confusion in the aviation industry. One objective of this AIR is to assist the reader in distinguishing between the types of PBE applications. A further objective is to assist in understanding the technical approaches which can be used in each of the major applications. Principles of PBE design are reviewed briefly.
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Demand Oxygen Systems

2002-09-30
CURRENT
AIR825/9
This SAE Aerospace Information Report (AIR) describes the general operating principles of demand oxygen equipment, including variant types such as diluter-demand and pressure breathing equipment. The sources of oxygen supply that can be used in connection with a demand oxygen mask are in principle the same as those used for other oxygen dispensing devices. Except for mention of a few features specifically related to demand equipment, this document does not discuss oxygen sources in detail and the reader is advised to consult other applicable documents that describe the operation of oxygen sources for additional information.
Standard

On Board Oxygen Generating Systems - Other Technologies

2013-03-07
WIP
AIR825/7
This AIR provides an overview of several emerging technologies for on board oxygen generation. It complements AIR 825/6, which covers pressure swing adsorption using zeolite molecular sieve beds to concentrate and separate oxygen from atmospheric gases. Topics covered here include use of dense ion conductive ceramics, electrolysis of water, high pressure chemical generation, membrane separations, and use of carbon based molecular seive beds.
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On Board Oxygen Generating Systems (Molecular Sieve)

2004-01-29
HISTORICAL
AIR825/6
The information provided in SAE AIR825/6 applies to On Board Oxygen Generating Systems (OBOGS) - Molecular Sieve, that utilize the ability of molecular sieve materials by using Pressure Swing Adsorption Process (PSA) to separate and concentrate oxygen in the product gas from the surrounding air, respectively air provided by any compressor or by the aircraft engine (so called: Bleed Air), and to provide this oxygen enriched air or product gas as supplemental oxygen for breathing gas supply of crew and passengers onboard aircraft. The distribution system and the provided oxygen concentration have to fulfill the respective FAA/JAA regulations. Equipment using this technology to provide supplemental oxygen for breathing gas supply of crew and passengers onboard aircraft, the suitable breathing gas oxygen partial pressure or oxygen concentration requirements are specified in AIR825/2 and the oxygen purity requirements in AS8010. NOTE: OBOGS has never been certified for commercial aircraft.
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Continuous Flow Oxygen Systems

2002-10-21
CURRENT
AIR825/8
This SAE Aerospace Information Report (AIR) provides general information on Continuous Flow Oxygen Systems which are available, principle functions of those systems and technical approaches to be taken into account during design and realization of systems. However, particular performance specifications and detailed information of manufacturing, testing and integration of such systems is beyond the scope of this document.
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