SYSTEM FOR FEEDING DUST INTO GAS TURBINE ENGINE INLET DURING STAND DUST TESTS Russian patent published in 2006 - IPC G01M15/00 

FIELD: test stands of aviation equipment, may be also used in the regions where gas turbine engines are employed and exposed to dust stand tests.

SUBSTANCE: system for feeding dust into gas turbine engine inlet has annular pipe positioned forward of gas turbine engine inlet, with cross sectional area of annular pipe corresponding to area of gas turbine engine inlet. Cylindrical channel between outer and inner walls of annular pipe is divided by longitudinal partitions into number of similar channels. Nozzle is located in each of said channels and baffle is located opposite nozzle outlet. Dust laden air is fed in equal amounts and with identical dispersion composition into each of said nozzles from mixer, which is located in suitable place on stand. Mixer is free from rigid connection with gas turbine engine under test. Cooperation of dust laden air streams issuing from nozzles with baffles located within said channels provided in annular pipe results in dissipation of dust particles contained in stream over the entire cross section of annular pipe and, accordingly, forward of gas turbine engine inlet. Thus, dust entering engine inlet is uniformly distributed over the entire inlet section as to its concentration as well as to dispersion composition.

EFFECT: compact construction, enhanced reliability in operation and reduced production costs.

8 dwg