Engine Halon Replacement
Description of Other Related Items of Interest for the Project
The following is a listing of other items which are related to the project (PDF Files), but do not have a direct part in the achievement of the goal.
- "Aircraft Engine/APU Fire Extinguishing System Design Model (HFC-125)," AFRL-VA-WP-TR-1999-3068, May 1997. This report is the result of a Department of Defense/FAA effort run at Wright-Patterson AFB during 1992-1997. It is intended as guidance for the designer of fire suppression systems for these applications when using HFC-125 as the extinguishant.
- A brief history of Halon 1301 in aircraft engine nacelle fire suppression systems and the accompanying development of nacelle gas concentration instrumentation. The discussion focuses on the evolutionary process by which Halon 1301 came to be the wide-spread answer for modern day aircraft engine nacelle fire protection; based primarily on FAA literature.
- AC 20-100, 1977. This Advisory Circular (AC) expands on the concept of engine nacelle fire extinguishing systems. This is an FAA document describing the process to demonstrate the acceptable distribution of a gaseous agent used for nacelle fire extinguishment. Additionally, it provides more background information on the subject.
- "Simulating the Distribution of Halon 1301 in an Aircraft Engine Nacelle with HFC-125," DOT/FAA/AR-TN99/64, August 1999. The technical note provides the explanation of this concept, comparative graphs, and bibliographic information. In short, the compressible fluid HFC-125 has been shown to mimic Halon 1301 if stored properly in the extinguisher. This behavior is very near to a 1:1 relationship in environments characteristically exposed to forced ventilation; i.e. the engine nacelle.
- Correction of Halonyzer discrepancies during gas analysis. This discussion addresses discrepancies noted during recent testing. One procedure resolving the concern is provided.
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