| 摘要 |
An inlet particle separator for a gas tubine engine, comprises, (a) an annular air inlet duct, (b) downstream of the inlet duct an annular obturating member having a continuous surface, the menber arranged to bifurcate the inlet duct into annular compressor and scavenge ducts, the compressor duct leading downstream to an engine compressor stage, the scavenge duct being located radially inwardly of the compresor duct and directed upstream thereof, and arranged to scavenge solid matter from the air flow through the inlet duct. The inlet duct is provided with an annular constriction at its downstream end extending radially inwards from a radially outer wall of the inlet duct. The inlet duct is angled so as to direct incoming air against the obturating member, the arrangement of the obturating member, the inlet duct, and the constriction being such as to prevent line-of-sight viewing of the compressor duct from the inlet duct and to deflect solid matter colliding with the walls of the inlet duct into the scavenge duct.
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