VERTICAL WIND TUNNEL WITH OBSERVATION POSSIBILITY Russian patent published in 2010 - IPC B64D23/00 

FIELD: transport.

SUBSTANCE: proposed wind tunnel comprises air intake chamber to receive air at pressure generated, preferably, by electrically driven blowers. Said tunnel is composed of three integrated tubes that form pipelines or loops with radial arrangement and spaced apart by approximately 120°. Top ends of return pipelines are jointed with jointing star-shaped section, while lower ends are jointed with cylindrical drive pipelines with their lower ends jointed with said star-shaped jointing section. Said jointing sections are interconnected via posts with transparent panels that form tube vertical section. Air from driven pipelines is fed into lower part of said tube vertical section.

EFFECT: lower power consumption.

4 cl, 3 tbl, 4 dwg