Cold Discharge of CF3I in a Simulated Aircraft Engine Nacelle.
Cold Discharge of CF3I in a Simulated Aircraft Engine
Yang, J. C.; Nyden, M. R.; Manzello, S. L.
Halon Options Technical Working Conference. Proceedings.
HOTWC 2001. Sponsored by: University of New Mexico,
Fire Suppression Systems Assoc., Fire and Safety Group,
GlobeTech, Inc., Halon Alternative Research Corp.,
Hughes Associates, Inc., Kidde, plc., Modular
Protection, Corp., Next Generation Fire Suppression
Technology Program, Sandia National Laboratories, Summit
Environmental Corp., Inc. and 3M Specialty Materials.
April 24-26, 2001, Albuquerque, NM, Daniels, B. L.;
Cole, D. G., Editor(s)(s), 64-71 pp, 2001.
Available from:FOR MORE INFORMATION CONTACT:
halon alternatives; aircraft engines; nacelle fires;
aircraft safety; fire safety; temperature; fire
An aircraft engine nacelle simulator was built to study
the dispersion behavior of CF3I, a potential halon 1301
(CF3Br) replacement, at an extremely cold temperature
(nominally -40 deg C). The experimental fixture consists
of a simulated engine nacelle with baffles, an agent
release port, observation windows, and two measurement
locations. The simulator has a configuration and
dimensions commensurate with a typical small engine
nacelle. The entire facility was placed inside a large
environmental test chamber. Agent discharge experiments
were conducted at -40 deg C. The dispersion of CF3I was
assessed by measuring the concentration at the two
measurement locations in the simulator using
fiber-optic-based UV spectrometers. Baseline agent
dispersion performance was also established at room
temperature. Compared to the measurements obtained at
room temperature, there was a significant reduction in
the agent concentration in the cold temperature release,
and a fire suppression system designed based on
room-temperature test data may fail to provide adequate