RELIABILITY ANALYSIS & PREDICTION OF MEAN TIME BETWEEN FAILURE OF FLIGHT DATA RECORDER

Suneel Kr Srivastava, A K Chauhan

Abstract: Flight data recorders also known as Black Box are used on military & civil aircraft to record the parameters of flight duration. It provides the data for post flight analysis and analysis for investigation, if there is any accident or incident happened during flight. Criticality of application of this unit requires data to be available for post-accident analysis through Ground Replay Equipment to ascertain the cause of accident; hence there is a requirement to have a reliable product. Also Flight Data Recorders are used as Health Monitoring device for the Sensors data / Engine performance and analysis of flown Flight envelope for Pilots briefing & de-briefing. Flight Data Recorders perform two operations during its functioning: ? Acquisition of data ? Recording of data in non-protected memory as well as in crash protected memory. Prediction using MIL-HDBK-217F assumes a serial relationship between parts of the system, in which failure of any part constitutes system failure. The model assumes that: ? All parts are in constant failure rate proportion of their lifetime. ? Infant mortalities have been removed by component screening, electrical test, burn-in etc., and ? Wear-out has not been reached. “Reliability Analysis & Prediction of Mean Time between Failures (MTBF) of Flight Data Recorder” concludes that Failure Rate of the system works out to be 197.92 Failures / 106 Hrs. i.e. Mean Time Between Failure of 5052.5hrs.

Keywords: PREDICTION

DOI: https://doi.org/10.15623/ijret.2015.0422014