Fluidic proximity sensor

摘要: A fluidic proximity sensor particularly adapted to sense clearance between gas turbine engine compressor blade tips and adjacent wall of a housing. In one embodiment, there is provided an air flow passage having chamber with inlet restricted outlet in series relationshp. The receives pressurized arranged predetermined relatively close spaced-apart relationship tip which sweeps the vary effective area thereof. resulting pressure pulses are integrated compared regulated reference fluid by means differential responsive device, output represents radial housing wall. another second connected parallel above-mentioned pair restrictions generated. not affected tips. representing