The subject matter of the article is process subsonic air intake shaping for gas-turbine engines at airplane preliminarily design stage. goal to develop a mathematical model non-circular on base V. I. Polikovskii method high-bypass ratio turbofan. tasks be solved are: consider possibility shape external outline engine nacelle; take into account internal duct (in first approximation, cross-secti...

Abstract The ingestion of airborne particulate into aircraft engines is an undesirable consequence their operation, particularly in and out arid locations that leads to reduced time between overhaul. Predicting the maintenance burden environments rich made difficult by large number parameters influence likelihood retention particles on nozzle guide vanes. In this contribution, we propose a new,...