Patent ID: 8171807
Filing Date: 2012-05-08
Classification: G01N

Abstract:
1. An iso-kinetic probe for the analysis of the pollution of gases generated by an aircraft engine, comprising: an air tapping tube having an upstream end and a downstream end; a base attached to the downstream end of the tube, said base including an outer diameter, an inner diameter, and a conical part with an inner face and an outer face; a passage bushing which is fixed on a conduit in which a gas stream flows, said passage bushing including an inner diameter d and a conical part; a measurement chamber with a nozzle provided on a lower end, the nozzle including a conical end; and a nut which holds the nozzle such that the nozzle rests on the conical part of the base, the nut including a threaded part which is engaged with the passage bushing, wherein the outer diameter of said base is mounted in the inner diameter of the passage bushing, the inner diameter of the passage bushing being sufficiently sized so that the upstream end of the tube is suitable to fit through the inner diameter of the passage bushing, and wherein an outer face of the conical end of the nozzle abuts the inner face of the conical part of the base and the conical part of the passage bushing abuts the outer face of the conical part of the base, such that the conical part of the base is sandwiched between the conical part of the passage bushing and the conical end of the nozzle.