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New Heater and Flux Gauge for the NBS Smoke Box.

pdf icon New Heater and Flux Gauge for the NBS Smoke Box. (572 K)
Smith, R. L.

NISTIR 4917; 30 p. September 1992.


Federal Aviation Administration, Atlantic City Airport, NJ

Available from:

National Technical Information Service
Order number: PB93-11367


smoke chamber test; smoke measurement


Improvements of the heater and the heat flux detector used in the FAA's Smoke Chamber test protocol are described. Heater designs were evaluated and two heaters were obtained and evaluated. This report covers various aspects of analysis and gives details on the heater that may provide a more uniform radiation field on the target specimen. The use of a smaller gauge, similar to the one used in the OSU calorimeter, in the smoke box for measuring the heat flux is discussed. Finally, a method that allows one to use the measurement of the radiation field at the center of the target specimen to infer the average radiation field over the specimen is presented.