Richard Hill & George R. Johnson

To be added at a later date.

Constantine P. Sarkos

Two Halon 1301 dispensing systems, modular nozzle and perforated tube, were designed and installed in an obsolete but completely furnished CD7 passenger cabin. For each system, agent distribution was continuously measured during discharge and for a period of 10 minutes at approximately 20 locations throughout the unpressurized cabin. The effect of Halon 1301 discharge on cabin temperature, noise, pressure, and visibility was also measured. The modular system was judged to be best by virtue of its producing more rapid and effective agent distribution resulting in greater potential fire-protection capability. Installation of the Halon 1301 dispensers along the ceiling for both systems minimized the known possible transient adverse effects upon passengers from agent concentration overshoot, discharge noise, overpressure, and reduced temperature. Halon 1301 was found to rapidly permeate all cabin airspaces, including those shielded from the discharge streamlines. The effect of agent leakage through opened emergency exits was investigated. "It was determined that even under such unfavorable conditions of operation, a high-rate discharge system would provide a reasonably good degree of inerting protection over a representative evacuation period.

Gerald R. Slusher

A limited investigation was conducted to measure the oxides of sulfur in aircraft turbine engine exhaust. The objective was to establish the ratio of sulfur trioxide (SO3) to sulfur dioxide (SO2) to be utilized in support of the climatic impact assessment program. The SO3 concentration was found to be 13.8 percent of the SO2 concentration as determined by wet chemistry analysis. Sulfur recovered in the samples was approximately 50 percent of the total sulfur in the fuel.

Paul A. Croce

A method is described for improving the transient gas concentration measurement in a relatively fast-developing fire or in any changing environment with a characteristics transient time that is comparable to the response time if the sampling system (including analyzer). Under such conditions, the measurements can be significantly altered in both time and magnitude and, hence, be of limited usefulness. The method utilizes the result of a simple laboratory test- the response of the measuring system to a step input- to determine the sampled concentration history from the analyzer record.

William V. Vitale

Purpose - This circular presents a listing of principal aircraft weights and dimensions which affect facility design. It is to be used for guidance in airport development. Data presented are for common civil aircraft and those military aircraft which frequently utilize civil facilities.