TURBOFAN GAS TURBINE ENGINE AND NACELLE ARRANGEMENT

摘要

The arrangement comprises a fan by-pass duct (32) located within the nace lle (34) and having an inlet (32a) and an outlet (32b). The outlet (32b) is generally oriented substantially radially and at an intermediary location al ong the nacelle (34). The nacelle (34) has an aft section with an initially convex and substantially outwardly extending surface (34a) adjacent to the o utlet (32b) of the fan by-pass duct (32). The surface (34b) of the aft secti on decreases in curvature and becomes concave towards a rear end of the engi ne.