Gas turbine engine and nacelle assembly for e.g. helicopter, has secondary deflecting channel shaped such that flow velocity of air increases from upstream to downstream, where channel has outlet with opening leading into wall of nacelle

摘要

The assembly has a nacelle (26) including an air intake fairing (26a) for forming an air inlet. The fairing has a foreign object deflecting member (40) for forming an air intake duct (41). The duct deflects a part of the foreign objects sucked by the air inlet towards a secondary deflecting channel (43). The secondary deflecting channel is shaped such that the flow velocity of the air flowing through the channel increases from upstream to downstream. The secondary channel has an outlet with an opening (43a) leading into an outer wall of the nacelle.