- Author
-
Klueg, E. P.
|
Demaree, J. E.
- Title
- Investigation of In-Flight Fire Protection With a Turbofan Powerplant Installation. Final Report.
- Coporate
- Federal Aviation Administration, Atlantic City, NJ
- Report
-
NA-69-26; Project 520-001-06X,
April 1969,
240 p.
- Distribution
- AVAILABLE FROM National Technical Information Service (NTIS), Technology Administration, U.S. Department of Commerce, Springfield, VA 22161. Telephone: 1-800-553-6847 or 703-605-6000; Fax: 703-605-6900. Website: http://www.ntis.gov
- Keywords
-
aircraft engines
|
installing
|
power plants
|
flight conditions
|
turbofan engines
|
nacelle fires
|
performance evaluation
|
extinguishing
|
fire suppression
|
fire damage
|
thermal ignition
- Identifiers
- fire characteristics; overheat detection
- Abstract
- The potential explosive and fire hazards and methods of detecting and controlling in-flight fires on modern aircraft powerplant installations were investigated under full-scale simulted low altitude flight conditions. Modifications were made to the pod-mounted turbofan engine test article to extend the program scope beyond the normal range of variables present on the installation. The test program consisted of five studies: (1) environmental conditions producing thermal ignition of combustible mixtures and ignition characteristics, (2) characteristics of nacelle fires, (3) system performance and installation requirements for fire and overheat deteciton, (4) requirements for extinguishing and contolling fires,a nd (5) effects of fires and explosions on the powerplant installation. The results of the program are presented as fire safety design criteria and engineering data. The effects of environmental conditions and thermal ignition and the characteristics of ignition are reported as a function of the amount, location, and type of fluid leakage. the size, intensity, radiation level, and propagation rate of nacelle fires are related to flight condition, fluid type, and fluid leakage characteristics. fire detection requiements and the feasibility of abbreviated and remotely located sensors are presented as a function of detector operating characteristics, available detection time, nacelle design, and fire characteristics. Fire extinguishing requrements are related to the location, size, intensity, and duration of the fires, flight conditions, ancelle ventilation, and the type extinguishing agent and container. The resistance of the nacelle and engine components to fire and explosive damage and means of controlling and preventing the spread of fire are reported.