D.M. Greason

This specification covers the composition, size, dimensions and physical properties of glass fiber blanket thermal and acoustical insulation for use up to 700 F in aircraft applications.

Bureau of Aviation

This study examines nonfatal in-flight injuries of passengers and flight attendants in air carrier operations during the years 1968 through 1971. Injuries caused by turbulence, evasive maneuvers to avoid a collision, and self-initiated injuries are summarized. Conditions, circumstances and pre-existing factors instrumental in creating a hazardous environment for persons abroad aircraft are examined, as well as types of injuries sustained and the treatment of such injuries. Also examined is the relationship of injuries to passenger seatbelt discipline, structure and design of cabin furnishings, flight attendants duties, consumption of alcoholic beverages and the location in the airplane of passengers and flight attendants. Six safety recommendations are presented.

Edward L. Lopez

A study was made of the smoke emission of cabin materials in ten major categories of' aircraft interior construction under various burning conditions. Two materials in each category tested represented high to low smoke emission values. A widebodied cabin mockup, 2774 cubic feet in volume was used to establish correlation with the 18 cubic foot NBS-type smoke chamber. Additionally, selected materials were tested in the wide-bodied mockup to relate human visual acuity to optical density with and without ventilation flow through the mockup. Results of the study indicate that fair to good correlation exists between the NBS-type smoke chamber and a cabin mockup for various sizes of materials tested in the mockup. Results of visibility studies indicate the relationship of optical density to human visual acuity with and without irritating gases and with and without ventilation flow rate through a wide-bodied cabin mockup.

S.J. Burge

The burning of polymers and in particular the prevention of inflammation is of great practical importance, but very little information is available on the chemistry of the process. We have made therefore a study of the burning of polythene from this point of view and the results show features of considerable interest.

Richard Hill

Full-scale tests simulating engine combustion section thermal failure (burn-through) were conducted using a cowled J-57 engine to determine the feasibility of detecting a burn-through by monitoring the carbon monoxide (CO) carbon dioxide (CO2), pressure level, on air temperature in the nacelle before, during, and after engine case rupture. Results of tests indicated that CO, CO2, pressure, and air temperature in the nacelle cannot be relied upon for early detection of a burn-through. Test results also indicated that containment of burn-through flame in the nacelle creates extremely high temperatures in the nacelle and can cause extensive structural damage.