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Aircraft Flame Arrestor Installation Guidelines and Test Methods
- Aerospace Standard
- ARP5776
- Issued
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
The scope of this document is to provide pertinent information on demonstrating the performance of Flame Arrestors, also known as Fuel Vent Protectors (FVPs), in preventing the propagation of a deflagration when the arrestors are subjected to aerospace-representative flames produced by the venting of flammable gas through the arrestor. Test procedures for two separate combustion-loading profiles are presented herein: The flame hold test condition, and the flame propagation test condition. For the flame hold test condition, the applicability of two separate critical flows is discussed in which one flow results in the greatest flame arrestor temperature and a second flow results in the greatest temperature of the surrounding structure. These guidelines are necessary for OEMs and fuel/vent system designers to validate the flame arresting-performance of the subassemblies comprising of the flame arrestors and relevant surrounding structures in an installation environment representative of the actual unique aircraft installation.
Flame arrestors are components of the fuel system plumbing and, as such, are subject to the same requirements of other fuel system plumbing components. This document presupposes that the flame arrestor is properly installed; note that existing documentation (refer to ARP8615) provides detailed guidance for testing a flame arrestor as a component of a system, including standard requirements for testing the installation of a flame arrestor.
Flame arrestors are installed on other aircraft system installations besides fuel vent systems. These include: fuel tank inerting system (within the distribution system at the tank entrance), electrical pump inlets and external aircraft drain masts. Although only the fuel tank vent system installation is specifically addressed in this document, portions of the detailed flame test procedures may be useful to qualify flame arrestors in other applications, e.g., the flame propagation test which is applicable to flame arrestors installed in the inerting system.
Rationale
This document provides guidelines for the design, installation, and testing of aircraft vent system flame arrestor installation. In the absence of specific regulatory direction, this document provides a basis for standardized test methods.
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Topic
Data Sets - Support Documents
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Issuing Committee
AE-5A Aerospace Fuel, Inerting and Lubrication Sys Committee
Welcome to the AE-5A, Aerospace Fuel, Inerting and Lubriation Systems public forum area.
Scope: Has responsibility for the resolution of problems in either design or service usage of aerospace fuel, oil and oxidizer systems, their components such as valves, pumps, couplings, fuel cells, quantity and flow gages, and tanks, and related problems as presure surger, icing, electrification, and safety. Develops standards addressing fuel, oil and oxidizer systems. For details about SAE's online privacy policy; copyright, content license, and reliability statements; and membership information, click on the link to "Info on Privacy, Copyright, and Membership" link in the folders area below. No copyrighted material may be posted in this forum. SAE is not liable for opinions expressed or information posted to this forum. All information posted becomes the property of SAE.Reference
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