Accession Number : ADA302177

Title :   Recommended Practices for the Assessment of the Effects of Atmospheric Water Ingestion on the Performance and Operability of Gas Turbine Engines (Recommendations Concernant les Methodes a Utiliser pour le Traitement de l'Humidite dans les Turbines a Gaz).

Descriptive Note : Advisory rept.

Corporate Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE)

PDF Url : ADA302177

Report Date : SEP 1995

Pagination or Media Count : 364

Abstract : The ingestion of water from the atmosphere into the inlet of a gas turbine engine can significantly influence the performance and operability of the engine. The objective of this report is to identify preferred practices to measure the effect of water ingestion on engine performance and operability. Atmospheric water is considered in all its forms: gaseous humidity, condensation droplets rain snow and hail. The Introduction in Chapter 1 summarizes the purpose and background to the report and identifies the intended audience. Chapter 2 provides a quantitative assessment of the hazardous weather threat due to water for all types of aircraft using data collected from international sources. Chapters 3, 4 and 5 examine analytical and experimental techniques currently in use to measure and to predict the effects of the different forms of ingested water on engine performance and operability. Chapter 6 summarizes current acceptance and certification specifications used by different national agencies in assessing the effects of ingested water. In Chapter 7 a review is made of current instrumentation used to assess and quantify the presence of vapour liquid droplets and particles (frozen droplets) in the flow. Chapter 8 describes briefly current methods for testing gas turbine engines under typical weather threat conditions. The final chapter of the report summarizes the collected information on the effects of water ingestion from the preceding chapters and presents a set of conclusions and recommendations for future research. It is hoped that this comprehensive review of the potential impact of atmospheric water ingestion will stimulate the development and application of new and improved methods for the measurement and assessment of ingested water effects on aircraft gas turbines.

Descriptors :   *GAS TURBINE ROTORS, *ATMOSPHERIC CONDENSATION, SOURCES, MEASUREMENT, AIRCRAFT, WEATHER, HAZARDS, THREATS, AIRCRAFT ENGINES, SPECIFICATIONS, PERFORMANCE(ENGINEERING), LIQUIDS, VAPORS, WATER, TEST METHODS, GAS TURBINES, PARTICLES, RAIN, SNOW, FREEZING, DROPS, HAIL, SAFETY, ADVERSE CONDITIONS, ENGINES, TURBINES, INTERNATIONAL, INGESTION(ENGINES), ACCEPTABILITY, CONDENSATION.

Subject Categories : Meteorology
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE