FIELD: testing equipment.
SUBSTANCE: invention relates to the field of experimental aerodynamics, in particular to low speed aerodynamic tubes and may be used to produce air flows. The device comprises a fan installation, a closed channel of variable cross-section, a direct channel, a prechamber, a collector (nozzle), a working part with the area for model testing, a return channel, the guiding vanes mounted in the corners of bend of the closed channel, a turbulence reducing screen and a honeycomb. And the corner of bend, located in front of the collector, is more than 90°.
EFFECT: ability to obtain a straight line stream comb at the outlet of the collector (nozzle) with the limited length of the prechamber.
2 cl, 2 dwg, 1 tbl
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