H.S. Pergament, R.R. Mikatarian

A method is developed to interpret flat plate impingement pressure and temperature data taken in jet engine combustor burn-through flames in terms of free stream velocities, pressures, temperatures, etc. These flames which are high-temperature, turbulent, under expanded sonic jets, are caused, in practice by the combustion gases impinging on (and burning a hole through) the wall of the combustor. The free stream property data are needed to compute local heat transfer coefficients, which must be known to determine whether potential firewall materials can withstand a burn-through flame. Turbulent convective heat transfer corrections to the temperature measurements. The influence of mixing between the burn-through flame and ambient air on flame properties is also studied, and a correlation is developed which relates the angle of spread of the mixing region to the enthalpy flux t the burn-through hole. Suggestions regarding future experimental and theoretical programs are made.

John F. Marcy

Measure the smoke emission characteristics of burning aircraft seat foam padding inside a cabin from a visibility standpoint. Relate the Specific Optical Index (Ds) values calculated from the cabin smoke test data on the foams with that obtained with the standard NBS Smoke Density Chamber Apparatus as described in American Society for Testing Materials (ASTM) publication STP 422.

George B. Geyer

An analysis of aircraft crash fire fighting systems was made through a survey of known and newly developed agents, both blanketing and auxiliary, and of dispensing equipment. Laboratory studies were conducted to ascertain the most acceptable agents and equipment for use in performing full-scale fire fighting tests. Experiments were performed principally upon those agents, which were manufactured in conformance with a Federal or Military specification or were listed and approved by a recognized testing laboratory. Full advantage was taken to avoid duplication of effort by accepting all published data, which was considered reliable by reason of its source. Large-scale fire tests were conducted only with those agents considered worthy of additional testing. Full-scale tactical fire fighting experiments were performed with medium size aircraft (B-47 Stratojet Bombers) to determine the effectiveness of each fire fighting agent and the validity of the techniques and agent application rates employed

NAFEC

This Manual has been produced for the purpose of (1) bringing together in one text information deemed usefull3y the sponsoring committee to aid personnel investigating aircraft accidents involving fire; (2) to assess the effectiveness of airborne and ground fire control equipment and its utilization; and (3) to provide data which will contribute to accident prevention and the saving of Jives in future aircraft fire incidents and accidents. This is the first edition of this Manual to be officially adopted by the National Fire Protection Association ,(International), action having been taken at the Association 76th Annual Meeting held in Philadelphia, Pennsylvania, U.S.A. on May 16, 1972.

E.B. Nicholas

To investigate the flammability characteristics of bullet-resistant armor panels for showing compliance with Federal Aviation Regulations (FAR) Part 25.853, paragraph (a) as amended in the Notice of Proposed Rule Making (NPRM) 60-33. Smoke and toxic gas characteristic tests were also conducted as a part of this investigation.