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Normas SAE – AENOR
SAE ARP1796B

SAE ARP1796B

Engine Bleed Air Systems for Aircraft

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Fecha publicación:
2020-05-12 /Reaffirmed
Abstract:
This SAE Aerospace Recommended Practice (ARP) discusses design philosophy, system and equipment requirements, installation environment and design considerations for military and commercial aircraft systems within the Air Transport Association (ATA) ATA 100 specification, Chapter 36, Pneumatic. This ATA system/chapter covers equipment used to deliver compressed air from a power source to connecting points for other systems such as air conditioning, pressurization, ice protection, cross-engine starting, air turbine motors, air driven hydraulic pumps, on board oxygen generating systems (OBOGS), on board inert gas generating systems (OBIGGS), and other pneumatic demands. The engine bleed air system includes components for preconditioning the compressed air (temperature, pressure or flow regulation), ducting to distribute high or low pressure air to the using systems, and sensors/instruments to indicate temperature and pressure levels within the system. The engine bleed air system may interface with the following Air Transport Association (ATA) 100 systems: Chapter 21 - Air Conditioning Chapter 29 - Hydraulic Power Chapter 30 - Ice and Rain Protection Chapter 34 - Navigation (Indication Systems/Probe Aspiration) Chapter 36 - Pneumatics Chapter 38 - Water/Waste Chapter 49 - Airborne Auxiliary Power Chapter 73 - Engine Fuel & Control Chapter 75 - Engine Air Chapter 78 - Engine Exhaust Chapter 80 - Engine Starting The interface with these systems/chapters is at the inlet of the shutoff/control valve of each associated system. This boundary definition aligns with that in the ATA 100 specification. This document also applies to military aircraft. The system functions and interface with other systems are basically the same as commercial aircraft systems. However, military engine bleed air systems often interface with additional systems such as anti-G suit, gun gas purge, and canopy seal. The primary emphasis of this document is on systems which use the aircraft engine as the source of the pneumatic supply. Alternate supply systems are discussed in Section 7 .
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