Download or read book Small-Engine Uncontained Debris Analysis written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under Contract to the Federal Aviation Administration, the Naval Air Warfare Center has conducted an analysis to define the characteristics of small civil turbine engine uncontained debris. The objective of the analysis was to define the debris size, weight, exit velocity, and trajectory that can be used to update AC20-128A. The effort was conducted by gathering historical data from uncontained engine failures. These data included, when available, phase of flight, engine operating condition, the failed engine component, aircraft damage location, and damage size. With this basic information, debris size was correlated to damage size. A methodology developed in the "Large-Engine Uncontained Debris Analysis" report number DOT/FAA/AR-99/11 was used to estimate debris exit velocity. Representative engine cases and cowls were defined, and existing ballistic penetration equations were used to calculate debris exit velocity. This analysis was conducted for disk and blade failures on fan, compressor and turbine components. Results of the analysis provided some interesting insight to these events. Looking at the debris trajectories, the analysis shows that the trajectories defined in AC20-128A are comparable to those seen in field events. Also the analysis highlights the fact that small engines produce fewer uncontained fragments than large engines (1 per event versus 11 per event on the average for large engines).