METHOD OF TESTING SMALL-SIZED BLADE TURBO-MACHINES AND TEST STAND FOR IMPLEMENTATION OF THIS METHOD Russian patent published in 2017 - IPC G01M15/14 

FIELD: machine engineering.

SUBSTANCE: in the method, the blade machines are manufactured using additive technologies (or AF technologies), and operation efficiency of the blade machines is ensured by reduction of working process characteristic temperature in accordance to the dependence: T_i/T_n≤(σ_i×ρ_n)/(σ_n×ρ_i); where T_i - characteristic temperature of gas dynamic process during testing; T_n - the corresponding temperature in actual working conditions; σ_i - determining the strength characteristic of the model material; σ_n - the corresponding strength characteristic of material of critical component full-scale parts of the blade machine; ρ_i - density of the model material; ρ_n - density of material of the critical full-scale parts of the blade machine. This method is implemented on the stand comprising an adjustable source of gas flow made in the form of a process compressor with adjustable drive, a process turbine, on which rotor shaft the rotors of the tested blade turbo-machines, compressors and turbines are secured and which are pneumatically connected into closed circuit through a cryogenic heat exchanger.

EFFECT: reduction of costs for preparation and implementation of multi-variant research of the blade machines.

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